ExprEngine.cpp revision ac7cc2d37e82181e73fcc265c1d0a619d18b7605
1d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis//=-- ExprEngine.cpp - Path-Sensitive Expression-Level Dataflow ---*- C++ -*-= 264924859b6b09d1cfb62fecf5954ec6c27cb58feTed Kremenek// 34af84313df0d2710fd57af89132e680294225cadTed Kremenek// The LLVM Compiler Infrastructure 4d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// 5d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// This file is distributed under the University of Illinois Open Source 6d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// License. See LICENSE.TXT for details. 7d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// 8d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek//===----------------------------------------------------------------------===// 9d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// 1077349cb20bfd7069d081f84c91975bfa8ef60a32Ted Kremenek// This file defines a meta-engine for path-sensitive dataflow analysis that 1177349cb20bfd7069d081f84c91975bfa8ef60a32Ted Kremenek// is built on GREngine, but provides the boilerplate to execute transfer 1277349cb20bfd7069d081f84c91975bfa8ef60a32Ted Kremenek// functions and build the ExplodedGraph at the expression level. 13d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek// 14d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek//===----------------------------------------------------------------------===// 15a7af5ea88a6c5bdf87497cca6c20831e8c546751Argyrios Kyrtzidis 16c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#define DEBUG_TYPE "ExprEngine" 17c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks 189b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 19ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose#include "PrettyStackTraceLocationContext.h" 20199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2116f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 22337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 2355fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/AST/StmtObjC.h" 241b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 250bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 2655fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/SourceManager.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 2855fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/CheckerManager.h" 2955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 3055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h" 316cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 32c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 3355fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/Support/raw_ostream.h" 344323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 380f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 39b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 409ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 41b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 42ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 43c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 44c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 45749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 46749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 47749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 48749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 49749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 50749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 515903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 54e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 55bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 56bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 57bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 583fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 59fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks SetOfConstDecls *VisitedCalleesIn, 6075f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks FunctionSummariesTy *FS, 6175f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks InliningModes HowToInlineIn) 6225e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 631d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 64fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks Engine(*this, FS), 65d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 66c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 68ca5d78d0bc3010164f2f9682967d64d7e305a167Jordan Rose this), 6950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 70c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 719428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose currStmtIdx(0), currBldrCtx(0), 724ef19205b6912316296db74a9073ad6fa60e4ccaTed Kremenek ObjCNoRet(mgr.getASTContext()), 73fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this), 7475f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks VisitedCallees(VisitedCalleesIn), 7575f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks HowToInline(HowToInlineIn) 76255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek{ 774d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned TrimInterval = mgr.options.getGraphTrimInterval(); 784d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose if (TrimInterval != 0) { 794d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose // Enable eager node reclaimation when constructing the ExplodedGraph. 804d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose G.enableNodeReclamation(TrimInterval); 814d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose } 82c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 8350a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 84d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 85cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 8650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 88e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 89e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 90e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 91e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 928bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 94a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 9752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9852e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 100a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 110a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose const BuiltinType *BT = dyn_cast<BuiltinType>(T); 111a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose if (!BT || !BT->isInteger()) 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 113b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 117b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1181397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1199c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 120c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 123dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<DefinedOrUnknownSVal> Constraint = 124dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Constraint_untested.getAs<DefinedOrUnknownSVal>(); 125b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1265974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1275974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 128b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1298bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 13152e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 132a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 133a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 134a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 135a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 136a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 137a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 138a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 143dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = V.getAs<Loc>()) { 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1495974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 15710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek loc::MemRegionVal L = svalBuilder.getCXXThis(MD, SFC); 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 159dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = V.getAs<Loc>()) { 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 161a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 162a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1635974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 164cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 165a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 166a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 16752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 168e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 169e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 1705e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan RoseProgramStateRef 1715e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan RoseExprEngine::createTemporaryRegionIfNeeded(ProgramStateRef State, 1725e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const LocationContext *LC, 1735e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Ex, 1745e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Result) { 17587193dac8f2c6c8f7ee1aa9eeb64622ec75c881bJordan Rose SVal V = State->getSVal(Ex, LC); 17608291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose if (!Result) { 17708291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // If we don't have an explicit result expression, we're in "if needed" 17808291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // mode. Only create a region if the current value is a NonLoc. 17908291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose if (!V.getAs<NonLoc>()) 18008291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose return State; 18108291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose Result = Ex; 18208291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose } else { 18308291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // We need to create a region no matter what. For sanity, make sure we don't 18408291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // try to stuff a Loc into a non-pointer temporary region. 18528117be48de465bc2862a8f4aaab09338be5090bJordan Rose assert(!V.getAs<Loc>() || Loc::isLocType(Result->getType()) || 18628117be48de465bc2862a8f4aaab09338be5090bJordan Rose Result->getType()->isMemberPointerType()); 18708291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose } 1885e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 1895e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose ProgramStateManager &StateMgr = State->getStateManager(); 1905e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose MemRegionManager &MRMgr = StateMgr.getRegionManager(); 1915e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose StoreManager &StoreMgr = StateMgr.getStoreManager(); 1925e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 1935e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // We need to be careful about treating a derived type's value as 19408291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // bindings for a base type. Unless we're creating a temporary pointer region, 19508291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // start by stripping and recording base casts. 1965e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose SmallVector<const CastExpr *, 4> Casts; 1975e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Inner = Ex->IgnoreParens(); 19808291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose if (!Loc::isLocType(Result->getType())) { 199eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose while (const CastExpr *CE = dyn_cast<CastExpr>(Inner)) { 200eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose if (CE->getCastKind() == CK_DerivedToBase || 201eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose CE->getCastKind() == CK_UncheckedDerivedToBase) 202eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose Casts.push_back(CE); 203eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose else if (CE->getCastKind() != CK_NoOp) 204eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose break; 2055e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 206eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose Inner = CE->getSubExpr()->IgnoreParens(); 207eafb5c694cc5d165149fcb9453bc9355fb0d44a5Jordan Rose } 2085e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose } 209f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 2105e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // Create a temporary object region for the inner expression (which may have 21108291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose // a more derived type) and bind the value into it. 21208291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose const TypedValueRegion *TR = MRMgr.getCXXTempObjectRegion(Inner, LC); 21308291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose SVal Reg = loc::MemRegionVal(TR); 21408291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose 21508291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose if (V.isUnknown()) 21608291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose V = getSValBuilder().conjureSymbolVal(Result, LC, TR->getValueType(), 21708291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose currBldrCtx->blockCount()); 2185e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose State = State->bindLoc(Reg, V); 2199f1d541ef1aca8f953e5bb4e7177969f0a2062d5Jordan Rose 2205e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // Re-apply the casts (from innermost to outermost) for type sanity. 2215e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose for (SmallVectorImpl<const CastExpr *>::reverse_iterator I = Casts.rbegin(), 2225e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose E = Casts.rend(); 2235e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose I != E; ++I) { 2245e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose Reg = StoreMgr.evalDerivedToBase(Reg, *I); 225f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 226f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 22708291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose State = State->BindExpr(Result, LC, Reg); 228f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose return State; 229f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose} 230f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 231e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 232e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 233e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 234e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 2359c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 23632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 2378bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 238fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 239fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 24032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 24132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 2428bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 243183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 244c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 245c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2468bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 2478bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 248bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *invalidated, 249537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 25066c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 251740d490593e0de8732a697c9f77b90ddd463863bJordan Rose const CallEvent *Call) { 25235bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 25366c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 254c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 255c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2568bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 257dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 258dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 259dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 260dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 261e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 26230726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 263ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 264ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 265ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 266ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 267ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose PrettyStackTraceLocationContext CrashInfo(Pred->getLocationContext()); 26866c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmtIdx = StmtIdx; 26966c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = Ctx; 270ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2719c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2723c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 273fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessStmt(const_cast<Stmt*>(E.castAs<CFGStmt>().getStmt()), Pred); 2743c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2753c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 276fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessInitializer(E.castAs<CFGInitializer>().getInitializer(), Pred); 2773c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2783c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2793c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2803c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2813c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 282fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessImplicitDtor(E.castAs<CFGImplicitDtor>(), Pred); 2833c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2849c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2859c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2869c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 287ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 288ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 289ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 290ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 291ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 292ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 293255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if (AMgr.options.AnalysisPurgeOpt == PurgeNone) 294ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 295ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 296ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2977a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Pred->getLocation().getAs<BlockEntrance>()) 298ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 299ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 300ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 301ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 302ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 303ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 304ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 3056062334cc388bce69fb3978c4ecb26c6485a5c2bJordan Rose if (CallEvent::isCallStmt(S.getStmt())) 306ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 307ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 308ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 309ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 310ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 311ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 312ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 313ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 3140b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 3150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 31684c484545c5906ba55143e212b4a5275ab55889fJordan Rose const LocationContext *LC, 3170b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 3180b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 3190b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 32084c484545c5906ba55143e212b4a5275ab55889fJordan Rose ReferenceStmt == 0 || isa<ReturnStmt>(ReferenceStmt)) 3218501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks && "PostStmt is not generally supported by the SymbolReaper yet"); 32284c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(LC && "Must pass the current (or expiring) LocationContext"); 32384c484545c5906ba55143e212b4a5275ab55889fJordan Rose 32484c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!DiagnosticStmt) { 32584c484545c5906ba55143e212b4a5275ab55889fJordan Rose DiagnosticStmt = ReferenceStmt; 32684c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(DiagnosticStmt && "Required for clearing a LocationContext"); 32784c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 32884c484545c5906ba55143e212b4a5275ab55889fJordan Rose 3290b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 3309428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose ProgramStateRef CleanedState = Pred->getState(); 33184c484545c5906ba55143e212b4a5275ab55889fJordan Rose 33284c484545c5906ba55143e212b4a5275ab55889fJordan Rose // LC is the location context being destroyed, but SymbolReaper wants a 33384c484545c5906ba55143e212b4a5275ab55889fJordan Rose // location context that is still live. (If this is the top-level stack 33484c484545c5906ba55143e212b4a5275ab55889fJordan Rose // frame, this will be null.) 33584c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!ReferenceStmt) { 33684c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(K == ProgramPoint::PostStmtPurgeDeadSymbolsKind && 33784c484545c5906ba55143e212b4a5275ab55889fJordan Rose "Use PostStmtPurgeDeadSymbolsKind for clearing a LocationContext"); 33884c484545c5906ba55143e212b4a5275ab55889fJordan Rose LC = LC->getParent(); 33984c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 34084c484545c5906ba55143e212b4a5275ab55889fJordan Rose 34184c484545c5906ba55143e212b4a5275ab55889fJordan Rose const StackFrameContext *SFC = LC ? LC->getCurrentStackFrame() : 0; 34284c484545c5906ba55143e212b4a5275ab55889fJordan Rose SymbolReaper SymReaper(SFC, ReferenceStmt, SymMgr, getStoreManager()); 3430b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3440b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 3450b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3460b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 3470b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 3480b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 3490b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 350241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 35177d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 352f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 353f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 3546bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3556bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3566bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3576bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 35866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Out, *currBldrCtx); 359fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, &cleanupTag, K); 3601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3616bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3626bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3636bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 364fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 3650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 3660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 367183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 368fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 369fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 370fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 37166c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(CheckedSet, Out, *currBldrCtx); 372fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 373fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3748bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3756bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3766bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3776bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3786bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3796bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3800b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3816bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3826bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3830b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3856bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3866bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3898bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 391fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, &cleanupTag, K); 3926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 39377d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3950b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3980b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 4000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 4019428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose const Stmt *currStmt = S.getStmt(); 4020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 40366c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmt->getLocStart(), 4040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 4051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 4070b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 4089428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose if (shouldRemoveDeadBindings(AMgr, S, Pred, Pred->getLocationContext())){ 4099428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose removeDead(Pred, CleanedStates, currStmt, Pred->getLocationContext()); 4100b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 4119428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose CleanedStates.Add(Pred); 4120b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 4130b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 414dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 4150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 4160b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 417dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 4181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 41966c486f275531df6362b3511fc3af6563561801bTed Kremenek Visit(currStmt, *I, DstI); 420dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 421ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 422ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 423dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 42466c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 425e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 426e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 427d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 428056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 429cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 430563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 431563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 432563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose BMI->getSourceLocation(), 433563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose "Error evaluating initializer"); 434563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 4359428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose // We don't clean up dead bindings here. 436056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 437056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 438056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 439056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 4403682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4413682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ProgramStateRef State = Pred->getState(); 4423a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal thisVal = State->getSVal(svalBuilder.getCXXThis(decl, stackFrame)); 4439dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 4443682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Tmp(Pred); 445610f79cbab4d752349b5c81a94682a6a82b102e7Anna Zaks SVal FieldLoc; 4463682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4473a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Evaluate the initializer, if necessary 44800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 4493a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Constructors build the object directly in the field, 4503a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // but non-objects must be copied in from the initializer. 45107c52d2813a6b5e4025276d3687bd25f75fd51b9Jordan Rose const Expr *Init = BMI->getInit()->IgnoreImplicit(); 4523682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!isa<CXXConstructExpr>(Init)) { 453ecee1651c100342366a9417c85c6e50399039930Jordan Rose const ValueDecl *Field; 454ecee1651c100342366a9417c85c6e50399039930Jordan Rose if (BMI->isIndirectMemberInitializer()) { 455ecee1651c100342366a9417c85c6e50399039930Jordan Rose Field = BMI->getIndirectMember(); 4563a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getIndirectMember(), thisVal); 457ecee1651c100342366a9417c85c6e50399039930Jordan Rose } else { 458ecee1651c100342366a9417c85c6e50399039930Jordan Rose Field = BMI->getMember(); 4593a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getMember(), thisVal); 460ecee1651c100342366a9417c85c6e50399039930Jordan Rose } 4613a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 462ecee1651c100342366a9417c85c6e50399039930Jordan Rose SVal InitVal; 463ecee1651c100342366a9417c85c6e50399039930Jordan Rose if (BMI->getNumArrayIndices() > 0) { 464ecee1651c100342366a9417c85c6e50399039930Jordan Rose // Handle arrays of trivial type. We can represent this with a 465ecee1651c100342366a9417c85c6e50399039930Jordan Rose // primitive load/copy from the base array region. 466ecee1651c100342366a9417c85c6e50399039930Jordan Rose const ArraySubscriptExpr *ASE; 467ecee1651c100342366a9417c85c6e50399039930Jordan Rose while ((ASE = dyn_cast<ArraySubscriptExpr>(Init))) 468ecee1651c100342366a9417c85c6e50399039930Jordan Rose Init = ASE->getBase()->IgnoreImplicit(); 469ecee1651c100342366a9417c85c6e50399039930Jordan Rose 470ecee1651c100342366a9417c85c6e50399039930Jordan Rose SVal LValue = State->getSVal(Init, stackFrame); 471ecee1651c100342366a9417c85c6e50399039930Jordan Rose if (Optional<Loc> LValueLoc = LValue.getAs<Loc>()) 472ecee1651c100342366a9417c85c6e50399039930Jordan Rose InitVal = State->getSVal(*LValueLoc); 473ecee1651c100342366a9417c85c6e50399039930Jordan Rose 474ecee1651c100342366a9417c85c6e50399039930Jordan Rose // If we fail to get the value for some reason, use a symbolic value. 475ecee1651c100342366a9417c85c6e50399039930Jordan Rose if (InitVal.isUnknownOrUndef()) { 476ecee1651c100342366a9417c85c6e50399039930Jordan Rose SValBuilder &SVB = getSValBuilder(); 477ecee1651c100342366a9417c85c6e50399039930Jordan Rose InitVal = SVB.conjureSymbolVal(BMI->getInit(), stackFrame, 478ecee1651c100342366a9417c85c6e50399039930Jordan Rose Field->getType(), 479ecee1651c100342366a9417c85c6e50399039930Jordan Rose currBldrCtx->blockCount()); 480ecee1651c100342366a9417c85c6e50399039930Jordan Rose } 481ecee1651c100342366a9417c85c6e50399039930Jordan Rose } else { 482ecee1651c100342366a9417c85c6e50399039930Jordan Rose InitVal = State->getSVal(BMI->getInit(), stackFrame); 483ecee1651c100342366a9417c85c6e50399039930Jordan Rose } 4843682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 485ecee1651c100342366a9417c85c6e50399039930Jordan Rose assert(Tmp.size() == 1 && "have not generated any new nodes yet"); 486ecee1651c100342366a9417c85c6e50399039930Jordan Rose assert(*Tmp.begin() == Pred && "have not generated any new nodes yet"); 4873682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Tmp.clear(); 488610f79cbab4d752349b5c81a94682a6a82b102e7Anna Zaks 489610f79cbab4d752349b5c81a94682a6a82b102e7Anna Zaks PostInitializer PP(BMI, FieldLoc.getAsRegion(), stackFrame); 4903682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose evalBind(Tmp, Init, Pred, FieldLoc, InitVal, /*isInit=*/true, &PP); 4913a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose } 492056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 493563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose assert(BMI->isBaseInitializer() || BMI->isDelegatingInitializer()); 494888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // We already did all the work when visiting the CXXConstructExpr. 495056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 496dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 4973682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose // Construct PostInitializer nodes whether the state changed or not, 4983a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // so that the diagnostics don't get confused. 499610f79cbab4d752349b5c81a94682a6a82b102e7Anna Zaks PostInitializer PP(BMI, FieldLoc.getAsRegion(), stackFrame); 5003682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Dst; 5013682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose NodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 5023682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose for (ExplodedNodeSet::iterator I = Tmp.begin(), E = Tmp.end(); I != E; ++I) { 5033682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNode *N = *I; 5043682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Bldr.generateNode(PP, N->getState(), N); 5053682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose } 5063a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 507dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 50866c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 5099c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 5109c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 511d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 512ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 513ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 5143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 5154ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 516fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessAutomaticObjDtor(D.castAs<CFGAutomaticObjDtor>(), Pred, Dst); 5174ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 5184ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 519fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessBaseDtor(D.castAs<CFGBaseDtor>(), Pred, Dst); 5204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 5214ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 522fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessMemberDtor(D.castAs<CFGMemberDtor>(), Pred, Dst); 5234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 5244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 525fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessTemporaryDtor(D.castAs<CFGTemporaryDtor>(), Pred, Dst); 5264ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 5274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 5284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 5294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 530ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 531dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 53266c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 5334ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 5344ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 535056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 536056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 537056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 538056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 5392210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 5402210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 54108291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose ProgramStateRef state = Pred->getState(); 54208291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose SVal dest = state->getLValue(varDecl, Pred->getLocationContext()); 54308291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose const MemRegion *Region = dest.castAs<loc::MemRegionVal>().getRegion(); 5442210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 54508291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose if (const ReferenceType *refType = varType->getAs<ReferenceType>()) { 54608291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose varType = refType->getPointeeType(); 54708291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose Region = state->getSVal(Region).getAsRegion(); 54808291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose } 549b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 55008291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose VisitCXXDestructor(varType, Region, Dtor.getTriggerStmt(), /*IsBase=*/ false, 55108291a937a149dbd036fd6ac8ab061eb8034343dJordan Rose Pred, Dst); 5524ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 5534ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 554d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 555888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 556888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 557888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ProgramStateRef State = Pred->getState(); 558888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 559888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 560888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose Loc ThisPtr = getSValBuilder().getCXXThis(CurDtor, 561888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose LCtx->getCurrentStackFrame()); 562888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal ThisVal = Pred->getState()->getSVal(ThisPtr); 563888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 564888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // Create the base object region. 5654411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose const CXXBaseSpecifier *Base = D.getBaseSpecifier(); 5664411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose QualType BaseTy = Base->getType(); 5674411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose SVal BaseVal = getStoreManager().evalDerivedToBase(ThisVal, BaseTy, 5684411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose Base->isVirtual()); 569888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 5705251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie VisitCXXDestructor(BaseTy, BaseVal.castAs<loc::MemRegionVal>().getRegion(), 5715251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie CurDtor->getBody(), /*IsBase=*/ true, Pred, Dst); 572888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose} 5734ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 574d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 5753a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 5763a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const FieldDecl *Member = D.getFieldDecl(); 5773a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 5783a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 5793a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5803a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 5813a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Loc ThisVal = getSValBuilder().getCXXThis(CurDtor, 5823a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose LCtx->getCurrentStackFrame()); 5835251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie SVal FieldVal = 5845251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie State->getLValue(Member, State->getSVal(ThisVal).castAs<Loc>()); 5853a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5863a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose VisitCXXDestructor(Member->getType(), 5875251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie FieldVal.castAs<loc::MemRegionVal>().getRegion(), 588200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose CurDtor->getBody(), /*IsBase=*/false, Pred, Dst); 5893a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose} 5904ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 591d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 592056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 593046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath ExplodedNodeSet &Dst) { 594046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath 595046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath QualType varType = D.getBindTemporaryExpr()->getSubExpr()->getType(); 596046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath 597046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath // FIXME: Inlining of temporary destructors is not supported yet anyway, so we 598046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath // just put a NULL region for now. This will need to be changed later. 599046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath VisitCXXDestructor(varType, NULL, D.getBindTemporaryExpr(), 600046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath /*IsBase=*/ false, Pred, Dst); 601046e79a425bfa82b480b8a07ce11d96391fa0a9bPavel Labath} 6029c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 60348b6247804eacc262cc5508e0fbb74ed819fbb6eJordan Rosevoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 6046889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 6050bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 6060bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 6070bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 6086889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 60966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, DstTop, *currBldrCtx); 6100bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 611e9cd031c77a92015571425b6445e8867816997cdJordan Rose assert(!isa<Expr>(S) || S == cast<Expr>(S)->IgnoreParens()); 6121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 613e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 614f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 615f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 6161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 6171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 6181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 6191b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 6209be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 62176da55d3a49e1805f51b1ced7c5da5bcd7f759d8John McCall case Stmt::MSPropertyRefExprClass: 622c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 6231b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 6241b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 6256ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 6264ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 62721ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 628552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 6291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 630c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 6316b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 632be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 633c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 6349a4db032ecd991626d236a502e770126db32bd31Richard Smith case Stmt::FunctionParmPackExprClass: 63528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 63628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 63701d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 638ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 639fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose const ExplodedNode *node = Bldr.generateSink(S, Pred, Pred->getState()); 64066c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.addAbortedBlock(node, currBldrCtx->getBlock()); 641c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 642c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 6435fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 644f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 645f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 646f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 647f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 6481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 6491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 6501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 6511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 6521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 6531b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 65446eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 6551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 6561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 657d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 6581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 659d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 6601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 6611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 6621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 6631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 664d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 665d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 666ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 667051303ce09291dfbed537fa33b0d8a4d92c82b75Tareq A. Siraj case Stmt::CapturedStmtClass: 6681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 6691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6704ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCSubscriptRefExprClass: 6714ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCPropertyRefExprClass: 6724ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose llvm_unreachable("These are handled by PseudoObjectExpr"); 6734ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose 6748ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 6758f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 6768bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 6775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 6785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 679ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 6808ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 6818ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 6828ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 6834beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 684ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 6854beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 686ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6874beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 6884beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 689ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 690e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 691f85e193739c953358c865005855253af4f68a497John McCall break; 692f85e193739c953358c865005855253af4f68a497John McCall 6931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 6941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 6951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 6961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 6971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 6981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 700f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 7011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 7021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 7031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 7041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 7051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 7061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 7071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 7081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 709e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 71056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 71161eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 712276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 713337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 7141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 7151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 7161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 717bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 718ed2e2de580f840385f25a188ed48d2a14948af76Pavel Labath case Stmt::AttributedStmtClass: 719bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 720bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 721c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 722c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 723477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 7241a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 725bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 726f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 727e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 728e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 729cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 73069a0e5021c5c49a34aa25cd89b1e613a52097e65Jordan Rose case Stmt::SubstNonTypeTemplateParmExprClass: 731bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 732bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 733bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 734bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 735bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 736bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 737e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 738bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 7391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 740bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose case Stmt::CXXDefaultArgExprClass: 741bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose case Stmt::CXXDefaultInitExprClass: { 74238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.takeNodes(Pred); 74338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet PreVisit; 74438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 74538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 74638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet Tmp; 74738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose StmtNodeBuilder Bldr2(PreVisit, Tmp, *currBldrCtx); 74838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 749bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose const Expr *ArgE; 750bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose if (const CXXDefaultArgExpr *DefE = dyn_cast<CXXDefaultArgExpr>(S)) 751bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose ArgE = DefE->getExpr(); 752bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose else if (const CXXDefaultInitExpr *DefE = dyn_cast<CXXDefaultInitExpr>(S)) 753bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose ArgE = DefE->getExpr(); 754bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose else 755bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose llvm_unreachable("unknown constant wrapper kind"); 75638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 7574b75085f5669efc6407c662b5686361624c3ff2fJordan Rose bool IsTemporary = false; 7584b75085f5669efc6407c662b5686361624c3ff2fJordan Rose if (const MaterializeTemporaryExpr *MTE = 7594b75085f5669efc6407c662b5686361624c3ff2fJordan Rose dyn_cast<MaterializeTemporaryExpr>(ArgE)) { 7604b75085f5669efc6407c662b5686361624c3ff2fJordan Rose ArgE = MTE->GetTemporaryExpr(); 7614b75085f5669efc6407c662b5686361624c3ff2fJordan Rose IsTemporary = true; 7624b75085f5669efc6407c662b5686361624c3ff2fJordan Rose } 7634b75085f5669efc6407c662b5686361624c3ff2fJordan Rose 764e2b1246a24e8babf2f58c93713fba16b8edb8e2dJordan Rose Optional<SVal> ConstantVal = svalBuilder.getConstantVal(ArgE); 765e2b1246a24e8babf2f58c93713fba16b8edb8e2dJordan Rose if (!ConstantVal) 766e2b1246a24e8babf2f58c93713fba16b8edb8e2dJordan Rose ConstantVal = UnknownVal(); 76738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 768bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 76938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose for (ExplodedNodeSet::iterator I = PreVisit.begin(), E = PreVisit.end(); 77038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose I != E; ++I) { 77138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ProgramStateRef State = (*I)->getState(); 772bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose State = State->BindExpr(S, LCtx, *ConstantVal); 7734b75085f5669efc6407c662b5686361624c3ff2fJordan Rose if (IsTemporary) 774bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose State = createTemporaryRegionIfNeeded(State, LCtx, 775bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose cast<Expr>(S), 776bccda13aa3fc2a4c674a8c0a7003a7e6b1ff17b0Jordan Rose cast<Expr>(S)); 77738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr2.generateNode(S, *I, State); 77838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 77938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 78038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 78138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.addNodes(Dst); 78238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose break; 78338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 78438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 785be2e1b11e3350e3a6e632c71beaab83aae3824d2Jordan Rose // Cases we evaluate as opaque expressions, conjuring a symbol. 786be2e1b11e3350e3a6e632c71beaab83aae3824d2Jordan Rose case Stmt::CXXStdInitializerListExprClass: 7871a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 78870fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 78970fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 7901a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 7911a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7921a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 7931a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 7941a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7951a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 79666c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currBldrCtx); 7971a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 79870fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 79970fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 80070fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 8011a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 8021a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 8031a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 8041a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 8053b1df8bb941a18c4a7256d7cfcbccb9de7e39995Ted Kremenek SVal result = svalBuilder.conjureSymbolVal(0, Ex, LCtx, resultType, 80666c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx->blockCount()); 8071a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 8081a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 8091a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 8101a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 8111a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 8121a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 8131a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 8141a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 8151a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 816540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 817ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 818892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 820540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 8211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 822df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier case Stmt::GCCAsmStmtClass: 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 824df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier VisitGCCAsmStmt(cast<GCCAsmStmt>(S), Pred, Dst); 825ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 826e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 827b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 8288cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 8298cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 8308cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 8318cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 8328cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 8338cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 834c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 835ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 836c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 837ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 838c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 839c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 840e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 84103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 842e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 843ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 844e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 845ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 846e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 847e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8482de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 8498bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 850ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 8515eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 8525eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 8535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 854e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 855e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 85606fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 857ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 858ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 8590caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && 860bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 861031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 862892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 8630caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, cast<Expr>(S)); 86448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 86548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 866892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 86748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 868ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 869e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 870e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 87106fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 872f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose case Stmt::CXXOperatorCallExprClass: { 873f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const CXXOperatorCallExpr *OCE = cast<CXXOperatorCallExpr>(S); 874f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 875f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // For instance method operators, make sure the 'this' argument has a 876f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // valid region. 877f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const Decl *Callee = OCE->getCalleeDecl(); 878f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(Callee)) { 879f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) { 880f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef State = Pred->getState(); 881f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 882f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef NewState = 883f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose createTemporaryRegionIfNeeded(State, LCtx, OCE->getArg(0)); 884476f41c4750421a7ead5014e75a0e790ff682754Jordan Rose if (NewState != State) { 885f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Pred = Bldr.generateNode(OCE, Pred, NewState, /*Tag=*/0, 886f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramPoint::PreStmtKind); 887476f41c4750421a7ead5014e75a0e790ff682754Jordan Rose // Did we cache out? 888476f41c4750421a7ead5014e75a0e790ff682754Jordan Rose if (!Pred) 889476f41c4750421a7ead5014e75a0e790ff682754Jordan Rose break; 890476f41c4750421a7ead5014e75a0e790ff682754Jordan Rose } 891f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 892f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 893f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // FALLTHROUGH 894f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 895b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 8969fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 8979fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 898ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 899b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 900ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 90106fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 902e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 903337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 904337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 905337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 906337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 907337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 908337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 909337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 91006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 911744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 912888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose case Stmt::CXXConstructExprClass: { 913ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 914888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXConstructExpr(cast<CXXConstructExpr>(S), Pred, Dst); 915ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9167ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 9177ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 9187ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 919d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXNewExprClass: { 920d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 921d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PostVisit; 922d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXNewExpr(cast<CXXNewExpr>(S), Pred, PostVisit); 923d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPostStmt(Dst, PostVisit, S, *this); 924d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 925d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 926d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 927d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 928d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXDeleteExprClass: { 929d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 930d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PreVisit; 931d74324371465a152387ac45e737ab7d23e543552Anton Yartsev const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 932d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 933d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 934d74324371465a152387ac45e737ab7d23e543552Anton Yartsev for (ExplodedNodeSet::iterator i = PreVisit.begin(), 935d74324371465a152387ac45e737ab7d23e543552Anton Yartsev e = PreVisit.end(); i != e ; ++i) 936d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXDeleteExpr(CDE, *i, Dst); 937d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 938d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 939d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 940d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 941e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 942e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 9431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 944e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 945ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9469c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 947e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 948ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 949e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 950e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 952e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 953ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 954892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 955ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 956e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 957f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 958f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 959ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 960892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 961ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 962f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 9631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 965e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 966ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 96756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 96856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 96956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 970ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 971e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 972e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 974bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 975ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 976bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 977ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 978bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 979bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 980892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 981ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 982892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 983892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 984ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 985e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 986892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 988e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 989ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 990e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 991ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 992e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9940835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 9950d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 9960d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 9970d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 9980d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 9990d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 1000f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 1001f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 1002ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 10039c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 1004f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 1005f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 1006f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 1007f85e193739c953358c865005855253af4f68a497John McCall 1008f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 1009f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 1010f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 1011f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 1012f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 1013f85e193739c953358c865005855253af4f68a497John McCall } 1014f85e193739c953358c865005855253af4f68a497John McCall 1015f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 1016f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 1017ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1018e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 1019e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 1020b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 102103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 1022ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1023c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose const MaterializeTemporaryExpr *MTE = cast<MaterializeTemporaryExpr>(S); 1024c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose CreateCXXTemporaryObject(MTE, Pred, Dst); 1025ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 102603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 102703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 102803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 1029c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 1030ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1031c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 1032ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1033c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 10341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 103597ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 1036ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1037892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 1038ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1039469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 1040ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 104197ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 1042ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1043892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 1044ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 104597ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 1046af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 1047af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 1048ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1049af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 1050ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1051af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 10521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1053d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose case Stmt::ObjCMessageExprClass: 1054ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1055d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 1056ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1057e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 10581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1059c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::ObjCAtThrowStmtClass: 1060c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::CXXThrowExprClass: 1061bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 1062bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 1063fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateSink(S, Pred, Pred->getState()); 1064bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 10651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10661b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 1067ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 10681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 1069ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 10701b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 10711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10728ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 1073ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 10748ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 1075ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 10768ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 10778ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1078f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 1079ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1080f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 1081f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 1082ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1083e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1085e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 10869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 1087a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 1088a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 1089a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 1090a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 1091a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 1092a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 1093a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 10941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10959c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 10968bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 1097ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 10985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 10995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 11005eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 1101a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 1102e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 1103e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 11046987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 110572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 1106ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 110703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 11080caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && (U->getOpcode() == UO_LNot)) { 1109031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1110892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 11110caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, U); 111272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 111372374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 1114892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 1115ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 11161b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 111772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 11184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 11194b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 11204b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 11218bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 11224b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 11234b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 11245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 11255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 11265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 11274b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 11284b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 11295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 11305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 11315eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 11324b9c2d235fb9449e249d74f48ecfec601650de93John McCall 11334b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 11344b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 11354b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 11361b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 11371b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 11381b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 11395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 11405903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 11415903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 11425903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 11435903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 11445903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 114528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose const Stmt *CE = CalleeSF->getCallSite(); 11465903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11475903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 11485903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 11495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 11505903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 11515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 11525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 11545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 11555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 11565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 115728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // processing the call. 11580b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 11595903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 11607a95de68c093991047ed8d339479ccad51b88663David Blaikie if (L.getAs<PreImplicitCall>()) 116128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose continue; 11627a95de68c093991047ed8d339479ccad51b88663David Blaikie if (L.getAs<CallEnter>()) 1163852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose continue; 11647a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Optional<StmtPoint> SP = L.getAs<StmtPoint>()) 116528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SP->getStmt() == CE) 11665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 11675903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 11685903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 11695903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1170253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 11715903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 11725903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11735903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 11745903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11755903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 117628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // Note that CE is permitted to be NULL! 11775903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 11785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 11795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 11805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 11815903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 118216303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState = 118316303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState->set<ReplayWithoutInlining>(const_cast<Stmt *>(CE)); 11845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 11865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 11875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1188253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1189253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1190253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1191253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1192253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 11935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 11945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 11965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 11975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 11985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 11995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 12005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 12015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1202c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1203253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1204b355be838a22a511d078504b2277f70aea52ca85Anna Zaks NodeBuilderWithSinks &nodeBuilder, 1205b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 1206ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose PrettyStackTraceLocationContext CrashInfo(Pred->getLocationContext()); 1207ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose 120827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 12092fa9d72d4d23ccdcd4137946e5ebafac7a04f04cTed Kremenek if (nodeBuilder.getContext().blockCount() >= AMgr.options.maxBlockVisitOnPath) { 1210ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1211253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1212b355be838a22a511d078504b2277f70aea52ca85Anna Zaks nodeBuilder.generateSink(Pred->getState(), Pred, &tag); 1213749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1214749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1215749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 1216b355be838a22a511d078504b2277f70aea52ca85Anna Zaks const LocationContext *CalleeLC = Pred->getLocation().getLocationContext(); 12173bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 12185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 12195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 12203bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1221e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 12223bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 12235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 12245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 12255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 12265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1227255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if ((!AMgr.options.NoRetryExhausted && 1228b355be838a22a511d078504b2277f70aea52ca85Anna Zaks replayWithoutInlining(Pred, CalleeLC))) 1229253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1230253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 12315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1232749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1233253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1234253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1235253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 123627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1237e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1238e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1239e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1240e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1241e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1242e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 12436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 12446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 12456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 12466ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 12476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1248294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 12498bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1250294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 12515eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1252294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 12536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 125403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 12556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 12566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 12576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 12596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 12601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 126103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 12626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 12636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 1264a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose if (!T->isIntegralOrEnumerationType()) 12656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 12661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 12686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 12696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 12706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 12716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 12721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 12746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 12756ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12766ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 12776ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 12786ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 1279a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose if (!bitsInit || !T->isIntegralOrEnumerationType() || 1280a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose Ctx.getTypeSize(T) > bits) 12816ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 12821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12835eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 12846ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 12856ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12863f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenekstatic const Stmt *ResolveCondition(const Stmt *Condition, 12873f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const CFGBlock *B) { 12883f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 12893f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 12903f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12913f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const BinaryOperator *BO = dyn_cast<BinaryOperator>(Condition); 12923f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 12933f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12943f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12953f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // For logical operations, we still have the case where some branches 12963f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // use the traditional "merge" approach and others sink the branch 12973f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // directly into the basic blocks representing the logical operation. 12983f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // We need to distinguish between those two cases here. 12993f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13003f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // The invariants are still shifting, but it is possible that the 13013f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // last element in a CFGBlock is not a CFGStmt. Look for the last 13023f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // CFGStmt as the value of the condition. 13033f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend(); 13043f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek for (; I != E; ++I) { 13053f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGElement Elem = *I; 1306b07805485c603be3d8011f72611465324c9e664bDavid Blaikie Optional<CFGStmt> CS = Elem.getAs<CFGStmt>(); 13073f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!CS) 13083f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek continue; 1309b07805485c603be3d8011f72611465324c9e664bDavid Blaikie if (CS->getStmt() != Condition) 13103f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek break; 13113f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 13123f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 13133f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13143f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek assert(I != E); 13153f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13163f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek while (Condition) { 13173f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek BO = dyn_cast<BinaryOperator>(Condition); 13183f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 13193f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 13203f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = BO->getRHS()->IgnoreParens(); 13213f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 13223f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek llvm_unreachable("could not resolve condition"); 13233f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek} 13243f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13259c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1326a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1327ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 13281aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1329a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1330a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1331ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose PrettyStackTraceLocationContext StackCrashInfo(Pred->getLocationContext()); 133266c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = &BldCtx; 1333f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1334b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 13351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 13361aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1337a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 13384e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1339b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1340b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 13411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13423f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13433f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // Resolve the condition in the precense of nested '||' and '&&'. 13443f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 13453f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 13463f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 13473f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = ResolveCondition(Condition, BldCtx.getBlock()); 134821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 134921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 135021028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 13510fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1352f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1353f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 13544e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 13558ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1356f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 13578ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 13581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1359f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1360f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1361f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1362cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1363cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1364cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1365cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1366cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 136712b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks ProgramStateRef PrevState = PredI->getState(); 136812b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks SVal X = PrevState->getSVal(Condition, PredI->getLocationContext()); 1369cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1370cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1371cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1372cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1373a5796f87229b4aeebca71fa6ee1790ae7a5a0382Jordan Rose if (Ex->getType()->isIntegralOrEnumerationType()) { 1374cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1375cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1376cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1377cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1378cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1379cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 138012b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks PredI->getLocationContext(), 1381cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1382cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1383cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1384cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1385cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 13860835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1387b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 13880835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 13895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 13900835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 139173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 1392829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, true, PredI); 1393829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, false, PredI); 1394cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13975251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedSVal V = X.castAs<DefinedSVal>(); 13980835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 13996960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StTrue, StFalse; 14006960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StTrue, StFalse) = PrevState->assume(V); 14016960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 1402cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1403cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 14046960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StTrue) 14056960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StTrue, true, PredI); 1406cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1407cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1408cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 14091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1410cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1411cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 14126960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StFalse) 14136960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StFalse, false, PredI); 1414cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1415cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1416cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1417cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 141866c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 1419f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1420f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 14210f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek/// The GDM component containing the set of global variables which have been 14220f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek/// previously initialized with explicit initializers. 14230f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted KremenekREGISTER_TRAIT_WITH_PROGRAMSTATE(InitializedGlobalsSet, 14240f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek llvm::ImmutableSet<const VarDecl *>) 14250f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 14260f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenekvoid ExprEngine::processStaticInitializer(const DeclStmt *DS, 14270f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek NodeBuilderContext &BuilderCtx, 14280f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek ExplodedNode *Pred, 14290f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek clang::ento::ExplodedNodeSet &Dst, 14300f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek const CFGBlock *DstT, 14310f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek const CFGBlock *DstF) { 1432ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose PrettyStackTraceLocationContext CrashInfo(Pred->getLocationContext()); 14330f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek currBldrCtx = &BuilderCtx; 14340f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 14350f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek const VarDecl *VD = cast<VarDecl>(DS->getSingleDecl()); 14360f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek ProgramStateRef state = Pred->getState(); 14370f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek bool initHasRun = state->contains<InitializedGlobalsSet>(VD); 14380f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek BranchNodeBuilder builder(Pred, Dst, BuilderCtx, DstT, DstF); 14390f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 14400f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek if (!initHasRun) { 14410f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek state = state->add<InitializedGlobalsSet>(VD); 14420f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek } 14430f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 14440f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek builder.generateNode(state, initHasRun, Pred); 14450f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek builder.markInfeasible(!initHasRun); 14460f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 14470f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek currBldrCtx = 0; 14480f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek} 14490f5c5c60e9806d13f0907cd99d7204ffab0e08f7Ted Kremenek 1450e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1451754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1452ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1453754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 14548bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 14555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 14561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1457754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1458754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1459754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 14604a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1461754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1462754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 14631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1464d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1465754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 1466dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::GotoLabel> LV = V.getAs<loc::GotoLabel>()) { 14675251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie const LabelDecl *L = LV->getLabel(); 14681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1469ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 147024f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1471a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1472754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1473754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1474754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 14751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1476b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1477754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1478754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 14795251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (V.getAs<loc::ConcreteInt>() || V.getAs<UndefinedVal>()) { 1480754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 14812055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 14822055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 14832055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1484754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1485754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 14861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1487754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1488b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 14891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1490754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1491a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1492754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1493f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1494d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 149573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1496b355be838a22a511d078504b2277f70aea52ca85Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC, 1497b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 1498ac7cc2d37e82181e73fcc265c1d0a619d18b7605Jordan Rose PrettyStackTraceLocationContext CrashInfo(Pred->getLocationContext()); 1499b355be838a22a511d078504b2277f70aea52ca85Anna Zaks StateMgr.EndPath(Pred->getState()); 15008501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 1501af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 15028501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks if (Pred->getLocationContext()->inTopFrame()) { 15038501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Remove dead symbols. 15048501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks ExplodedNodeSet AfterRemovedDead; 15058501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks removeDeadOnEndOfFunction(BC, Pred, AfterRemovedDead); 15068501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 15078501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Notify checkers. 15088501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks for (ExplodedNodeSet::iterator I = AfterRemovedDead.begin(), 15098501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks E = AfterRemovedDead.end(); I != E; ++I) { 1510344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, *I, *this); 15118501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 15128501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } else { 1513344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, Pred, *this); 15148501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 15158501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 15164d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 151773099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 151873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1519d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1520daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1521e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1522d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 15238bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 15249c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 15255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1526daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 15275b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 15282055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1529b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 15302055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 15312055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1532daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1533daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 15345251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedOrUnknownSVal CondV = CondV_untested.castAs<DefinedOrUnknownSVal>(); 1535692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 15368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 153734feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 153834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 153934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 15401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 154134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1542e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1543e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1544e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1545e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 15469c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 154772afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 154872afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 154985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 155085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 15511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1552daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 155385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 155485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 155585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 155614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 155714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 15581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1559daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1560daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1561aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 15621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 156314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 156485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 15659c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 156648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1567b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 15698bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1570a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 15711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1572daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1573daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1574daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 15755251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (CondV.getAs<nonloc::ConcreteInt>()) 1576daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1577daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1579daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1580daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 158148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 15828bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 158348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 158448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 158548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 158648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 158748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 158848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 158948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 15905014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1591b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 159214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 159385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 159414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 15951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 159685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 159785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 15981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 159914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1600daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 16011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 16034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 16044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 16054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 16064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 16074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 16084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 16094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 16104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 16114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 16124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 16134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 16144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 16154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 16164d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 16174d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 16184d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 16194d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1620daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1621daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1622e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1623ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1624e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1625d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1626d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1627d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1628d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 162966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1630ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 16318bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 16325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 16336d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 16349c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 16351acb394679b6e644044a0f6c358229759009b1a6Jordan Rose // C permits "extern void v", and if you cast the address to a valid type, 16361acb394679b6e644044a0f6c358229759009b1a6Jordan Rose // you can even do things with it. We simply pretend 16371acb394679b6e644044a0f6c358229759009b1a6Jordan Rose assert(Ex->isGLValue() || VD->getType()->isVoidType()); 1638d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1639a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1640892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1641892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1642892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1643892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1644892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1645892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1646892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1647852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 16486d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1649fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1650ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1651852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1652892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 16539c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1654591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1655c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 16565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 16576d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1658892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 16599c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1660c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1661fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1662ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 16636d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 16641b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 16655aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 1666fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose // FIXME: Compute lvalue of field pointers-to-member. 16670156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // Right now we just use a non-null void pointer, so that it gives proper 16680156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // results in boolean contexts. 16690156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose SVal V = svalBuilder.conjureSymbolVal(Ex, LCtx, getContext().VoidPtrTy, 16700156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose currBldrCtx->blockCount()); 16715251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->assume(V.castAs<DefinedOrUnknownSVal>(), true); 16720156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1673fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 16745aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 16755aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 16765aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 1677fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose llvm_unreachable("Support for this Decl not implemented."); 16783271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 16793271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1680540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 16819c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 16829c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16839c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 16841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 16869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1687892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 16881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16898f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 16908f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 16918f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 169266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currBldrCtx); 1693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 16948f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 16958f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 16965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 16978bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 16985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 16995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 17005eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1701591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 1702fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 0, 1703fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 17041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1705540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1706540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1707469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 17089c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 17096889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 17101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171166c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, TopDst, *currBldrCtx); 17126889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 1713603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose ValueDecl *Member = M->getMemberDecl(); 171410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1715603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // Handle static member variables and enum constants accessed via 1716603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // member syntax. 1717603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (isa<VarDecl>(Member) || isa<EnumConstantDecl>(Member)) { 1718ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1719603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose VisitCommonDeclRefExpr(M, Member, Pred, Dst); 1720ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 17215bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 17225bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 172310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1724f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef state = Pred->getState(); 1725f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 1726f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Expr *BaseExpr = M->getBase(); 1727f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 172810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 1729603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(Member)) { 1730f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) 1731f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 173210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1733f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal MDVal = svalBuilder.getFunctionPointer(MD); 1734f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = state->BindExpr(M, LCtx, MDVal); 173520aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1736f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Bldr.generateNode(M, Pred, state); 1737ce6644bc1e921833f9b3c10cf7d4a0b78e8d5dc9Jordan Rose return; 173820aa40342bd74895128860c081aa84cd85bfa68dJordan Rose } 173920aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1740f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // Handle regular struct fields / member variables. 1741f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 1742f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal baseExprVal = state->getSVal(BaseExpr, LCtx); 1743d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose 1744603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose FieldDecl *field = cast<FieldDecl>(Member); 1745e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 174673b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks 174773b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks if (M->isGLValue() || M->getType()->isArrayType()) { 174873b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks 174973b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks // We special case rvalue of array type because the analyzer cannot reason 175073b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks // about it, since we expect all regions to be wrapped in Locs. So we will 175173b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks // treat these as lvalues assuming that they will decay to pointers as soon 17525955c37230046e8c297f5afb9f91b7c8c1e18446Anna Zaks // as they are used. 175373b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks if (!M->isGLValue()) { 175473b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks assert(M->getType()->isArrayType()); 175573b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks const ImplicitCastExpr *PE = 175673b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks dyn_cast<ImplicitCastExpr>(Pred->getParentMap().getParent(M)); 175773b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks if (!PE || PE->getCastKind() != CK_ArrayToPointerDecay) { 175873b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks assert(false && 175973b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks "We assume that array is always wrapped in ArrayToPointerDecay"); 176073b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks L = UnknownVal(); 176173b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks } 176273b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks } 176373b417f363a67439b30b3167ef8d9fb32e37191bAnna Zaks 17646b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (field->getType()->isReferenceType()) { 1765d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose if (const MemRegion *R = L.getAsRegion()) 1766d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose L = state->getSVal(R); 1767d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose else 17686b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = UnknownVal(); 17696b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } 17706b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose 1771d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), 0, 1772d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose ProgramPoint::PostLValueKind); 17736b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } else { 1774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1775bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1776ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1777ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1778469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1779469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 1780bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksnamespace { 1781bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksclass CollectReachableSymbolsCallback : public SymbolVisitor { 1782bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols Symbols; 1783bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zakspublic: 1784bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback(ProgramStateRef State) {} 1785bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &getSymbols() const { return Symbols; } 1786bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1787bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool VisitSymbol(SymbolRef Sym) { 1788bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Symbols.insert(Sym); 1789bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return true; 1790bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1791bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks}; 1792bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} // end anonymous namespace 1793bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 17941655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// A value escapes in three possible cases: 17951655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (1) We are binding to something that is not a memory region. 17961655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (2) We are binding to a MemrRegion that does not have stack storage. 17971655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (3) We are binding to a MemRegion with stack storage that the store 17981655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// does not understand. 1799bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef ExprEngine::processPointerEscapedOnBind(ProgramStateRef State, 18001655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks SVal Loc, SVal Val) { 1801bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Are we storing to something that causes the value to "escape"? 1802bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool escapes = true; 1803bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1804bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // TODO: Move to StoreManager. 1805dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> regionLoc = Loc.getAs<loc::MemRegionVal>()) { 1806bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = !regionLoc->getRegion()->hasStackStorage(); 1807bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1808bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) { 1809bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // To test (3), generate a new state with the binding added. If it is 1810bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the same state, then it escapes (since the store cannot represent 1811bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the binding). 1812bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Do this only if we know that the store is not supposed to generate the 1813bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // same state. 1814bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SVal StoredVal = State->getSVal(regionLoc->getRegion()); 1815bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (StoredVal != Val) 1816bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = (State == (State->bindLoc(*regionLoc, Val))); 1817bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1818bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1819bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1820bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If our store can represent the binding and we aren't storing to something 1821bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // that doesn't have local storage then just return and have the simulation 1822bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // state continue as is. 1823bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) 1824bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1825bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1826bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Otherwise, find all symbols referenced by 'val' that we are tracking 1827bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // and stop tracking them. 1828bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback Scanner = 1829bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State->scanReachableSymbols<CollectReachableSymbolsCallback>(Val); 1830bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &EscapedSymbols = Scanner.getSymbols(); 1831bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1832bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks EscapedSymbols, 1833233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks /*CallEvent*/ 0, 1834233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks PSK_EscapeOnBind); 1835bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1836bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1837bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1838bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1839bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef 184041988f331a74a72cf243a2a68ffb56418e9a174eAnna ZaksExprEngine::notifyCheckersOfPointerEscape(ProgramStateRef State, 1841bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *Invalidated, 1842bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> ExplicitRegions, 1843bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> Regions, 184441988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks const CallEvent *Call, 184541988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks bool IsConst) { 1846bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1847bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Invalidated || Invalidated->empty()) 1848bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1849bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1850bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Call) 1851bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return getCheckerManager().runCheckersForPointerEscape(State, 1852233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks *Invalidated, 1853233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks 0, 1854044fe23e79fff3841cc4c315f8c97e1cdccdd8ddAnton Yartsev PSK_EscapeOther, 1855044fe23e79fff3841cc4c315f8c97e1cdccdd8ddAnton Yartsev IsConst); 185641988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks 185741988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks // Note: Due to current limitations of RegionStore, we only process the top 185841988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks // level const pointers correctly. The lower level const pointers are 185941988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks // currently treated as non-const. 186041988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks if (IsConst) 186141988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks return getCheckerManager().runCheckersForPointerEscape(State, 186241988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks *Invalidated, 186341988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks Call, 186441988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks PSK_DirectEscapeOnCall, 186541988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks true); 186641988f331a74a72cf243a2a68ffb56418e9a174eAnna Zaks 1867bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If the symbols were invalidated by a call, we want to find out which ones 1868bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // were invalidated directly due to being arguments to the call. 1869bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsDirectlyInvalidated; 1870bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (ArrayRef<const MemRegion *>::iterator I = ExplicitRegions.begin(), 1871bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = ExplicitRegions.end(); I != E; ++I) { 1872bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (const SymbolicRegion *R = (*I)->StripCasts()->getAs<SymbolicRegion>()) 1873bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsDirectlyInvalidated.insert(R->getSymbol()); 1874bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1875bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1876bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsIndirectlyInvalidated; 1877bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (InvalidatedSymbols::const_iterator I=Invalidated->begin(), 1878bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = Invalidated->end(); I!=E; ++I) { 1879bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolRef sym = *I; 1880bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (SymbolsDirectlyInvalidated.count(sym)) 1881bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks continue; 1882bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsIndirectlyInvalidated.insert(sym); 1883bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1884bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1885bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsDirectlyInvalidated.empty()) 1886bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1887233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsDirectlyInvalidated, Call, PSK_DirectEscapeOnCall); 1888bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1889bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Notify about the symbols that get indirectly invalidated by the call. 1890bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsIndirectlyInvalidated.empty()) 1891bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1892233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsIndirectlyInvalidated, Call, PSK_IndirectEscapeOnCall); 1893bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1894bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1895bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1896bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 18979c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 18989c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 18999c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 190093bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 190132a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek SVal location, SVal Val, 19023682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose bool atDeclInit, const ProgramPoint *PP) { 19033682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 19043682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose const LocationContext *LC = Pred->getLocationContext(); 19053682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostStmt PS(StoreE, LC); 19063682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!PP) 19073682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PP = &PS; 1908b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1909b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1910fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1911fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 19123682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose StoreE, *this, *PP); 1913b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1914bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1915bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Dst, *currBldrCtx); 1916bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 191732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // If the location is not a 'Loc', it will already be handled by 191832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // the checkers. There is nothing left to do. 19195251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (!location.getAs<Loc>()) { 1920bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, /*Loc*/0, /*tag*/0); 1921bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ProgramStateRef state = Pred->getState(); 1922bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1923bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Bldr.generateNode(L, state, Pred); 192432a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek return; 192532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 192632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 19276b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1928b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1929b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 19303d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 19313d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 193232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 1933bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1934bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 193532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // When binding the value, pass on the hint that this is a initialization. 193632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // For initializations, we do not need to inform clients of region 193732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // changes. 19385251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(location.castAs<Loc>(), 193932a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek Val, /* notifyChanges = */ !atDeclInit); 1940bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 19413d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 1942dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> LocRegVal = 19435251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie location.getAs<loc::MemRegionVal>()) { 19443d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 194532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 19463682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 19473d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 1948fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(L, state, PredI); 1949b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1950a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1951a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 19529c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1953a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 19542e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1955e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 19562e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1957a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1958a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1959a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 19609c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 19619c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 19629c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 19638bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1964ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 196514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 196614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 196714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 196814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 19691b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1970b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1971bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 19721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1973b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 19741b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1975b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 197673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 197773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1978a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1979b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 19803d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 19811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 19821b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1983bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1984bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1985bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1986bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1987bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1988bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1989bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1990bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1991bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 19925251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert(!location.getAs<NonLoc>() && "location cannot be a NonLoc."); 199314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 19945b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1995852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1996852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 19979697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 19989697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1999b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 2000018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 2001852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 2002ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 2003ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 2004852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 2005bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 2006bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 2007852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 2008852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 2009852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 2010852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 2011db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 2012bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 2013bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 2014b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 2015852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 2016852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 2017852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 2018b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 2019bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 2020852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 2021852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 2022bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 2023bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 2024bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 2025bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 2026bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 2027bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 2028bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 2029bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 2030bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 2031bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 20321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 2033b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 2034bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 2035b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 20361b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 2037b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 203866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 203973c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 204073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 2041b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 20421b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 2043b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 2044db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 20455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 204696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 20477affe151f5689b2d3547b8947c4099532c78a021Jordan Rose SVal V = UnknownVal(); 20487affe151f5689b2d3547b8947c4099532c78a021Jordan Rose if (location.isValid()) { 204996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 2050bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 20515251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie V = state->getSVal(location.castAs<Loc>(), LoadTy); 2052b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 20537affe151f5689b2d3547b8947c4099532c78a021Jordan Rose 20547affe151f5689b2d3547b8947c4099532c78a021Jordan Rose Bldr.generateNode(NodeEx, *NI, state->BindExpr(BoundEx, LCtx, V), tag, 20557affe151f5689b2d3547b8947c4099532c78a021Jordan Rose ProgramPoint::PostLoadKind); 2056d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 20571b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 20581b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 2059bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 2060bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 2061bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 2062bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 2063bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 2064bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 2065bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 2066bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 206766c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder BldrTop(Pred, Dst, *currBldrCtx); 206800b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 2069769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 2070b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 2071b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 2072b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 20739c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 2074ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 207566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Src, *currBldrCtx); 2076ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 2077eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 2078eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 2079eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 2080eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 2081eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 2082eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 2083eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 2084eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 2085ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2086fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose static SimpleProgramPointTag tag("ExprEngine: Location"); 2087fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(NodeEx, Pred, state, &tag); 20880296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 2089ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 2090bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 2091bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 2092ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 2093ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 2094ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 20956c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 20960caa2d47b84337e942b3f6652adfafe4ae506cfeTed KremenekExprEngine::geteagerlyAssumeBinOpBifurcationTags() { 20976c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 20980caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationTrue("ExprEngine : Eagerly Assume True"), 20990caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationFalse("ExprEngine : Eagerly Assume False"); 21000caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek return std::make_pair(&eagerlyAssumeBinOpBifurcationTrue, 21010caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek &eagerlyAssumeBinOpBifurcationFalse); 21026c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 21036c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 21040caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenekvoid ExprEngine::evalEagerlyAssumeBinOpBifurcation(ExplodedNodeSet &Dst, 21050caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek ExplodedNodeSet &Src, 21060caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek const Expr *Ex) { 210766c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Src, Dst, *currBldrCtx); 210886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 2109031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 2110031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 2111b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 2112b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 2113b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 21141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 21157a95de68c093991047ed8d339479ccad51b88663David Blaikie if (!P.getAs<PostStmt>() || P.castAs<PostStmt>().getStmt() != Ex) { 2116b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 21171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2118b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 21198bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 21205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 2121dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<nonloc::SymbolVal> SEV = V.getAs<nonloc::SymbolVal>(); 21225344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 21236c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 21240caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek geteagerlyAssumeBinOpBifurcationTags(); 21256c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 21266960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StateTrue, StateFalse; 21276960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StateTrue, StateFalse) = state->assume(*SEV); 21286960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 212948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 21306960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateTrue) { 213186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 21325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 2133fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateTrue, tags.first); 213448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 21351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 213648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 21376960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateFalse) { 213886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 21395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 2140fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateFalse, tags.second); 214148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 214248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 214348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 214448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 214548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 2146df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosiervoid ExprEngine::VisitGCCAsmStmt(const GCCAsmStmt *A, ExplodedNode *Pred, 2147df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier ExplodedNodeSet &Dst) { 214866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 2149a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 2150a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 21511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2152a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 2153a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 2154a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 21551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2156a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 21571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2158df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier for (GCCAsmStmt::const_outputs_iterator OI = A->begin_outputs(), 2159a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 2160a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 21615251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert (!X.getAs<NonLoc>()); // Should be an Lval, or unknown, undef. 21621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2163dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = X.getAs<Loc>()) 21645251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(*LV, UnknownVal()); 2165ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 21661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2167a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 2168ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 2169ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 21708cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 21718cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 217266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 21738cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 21748cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 21758cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 2176094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 2177e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 2178ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 2179ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 2180aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 2181d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 2182e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 21833b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 2184aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 2185aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 218647491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 2187aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 2188006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2189006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 2190006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2191d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 2192ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 21939c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 21941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 219510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 219610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 219710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 2198a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 21999dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 22004a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 22014a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 22024a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 22035e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 22042ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 22052ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 2206a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 22071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22088cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 22098cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 22102055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 2211a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 2212a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 22131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2214cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko static void printLocation(raw_ostream &Out, SourceLocation SLoc) { 221528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SLoc.isFileID()) { 221628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "\\lline=" 221728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 221828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << " col=" 221928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 222028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << "\\l"; 222128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 222228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 222328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 22249c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 22251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 222653ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 222753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 2228803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 2229803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 2230aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 22311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2232aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 22330b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 22341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 22357a95de68c093991047ed8d339479ccad51b88663David Blaikie << Loc.castAs<BlockEntrance>().getBlock()->getBlockID(); 22360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 22370b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 22380b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 22390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 22400b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 22410b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 2242aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 22430b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 22441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2245aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 2246aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 2247aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 22481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2249102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 2250102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 2251102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2252102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 22530b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 22540b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 22550b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 22560b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 22570b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 22580b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 22590b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 22600b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 22610b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 22620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 22630b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 22640b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 22650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 22660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 2267102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2268102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 22695903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 22705903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 22715903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 22725903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 227328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PreImplicitCallKind: { 22747a95de68c093991047ed8d339479ccad51b88663David Blaikie ImplicitCallPoint PC = Loc.castAs<ImplicitCallPoint>(); 227528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PreCall: "; 227628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 227728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 22787a95de68c093991047ed8d339479ccad51b88663David Blaikie PC.getDecl()->print(Out, LangOptions()); 22797a95de68c093991047ed8d339479ccad51b88663David Blaikie printLocation(Out, PC.getLocation()); 228028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 228128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 228228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 228328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PostImplicitCallKind: { 22847a95de68c093991047ed8d339479ccad51b88663David Blaikie ImplicitCallPoint PC = Loc.castAs<ImplicitCallPoint>(); 228528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PostCall: "; 228628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 228728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 22887a95de68c093991047ed8d339479ccad51b88663David Blaikie PC.getDecl()->print(Out, LangOptions()); 22897a95de68c093991047ed8d339479ccad51b88663David Blaikie printLocation(Out, PC.getLocation()); 229028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 229128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 229228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 22931aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose case ProgramPoint::PostInitializerKind: { 22941aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "PostInitializer: "; 22951aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose const CXXCtorInitializer *Init = 22961aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Loc.castAs<PostInitializer>().getInitializer(); 22971aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose if (const FieldDecl *FD = Init->getAnyMember()) 22981aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << *FD; 22991aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else { 23001aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose QualType Ty = Init->getTypeSourceInfo()->getType(); 23011aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Ty = Ty.getLocalUnqualifiedType(); 2302e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 23031aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Ty.print(Out, LO); 23048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 23051aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose break; 23061aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose } 23078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 23081aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose case ProgramPoint::BlockEdgeKind: { 23097a95de68c093991047ed8d339479ccad51b88663David Blaikie const BlockEdge &E = Loc.castAs<BlockEdge>(); 2310aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 2311aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 23121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23139c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 2314e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 23151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2316b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 2317e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2318e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 23191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23209b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 23219b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 2322642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 23237da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 2324a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 23259b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 23261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2327daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 23289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 23291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 23319c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 2332daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 2333e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2334e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 23351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23369c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 2337daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 2338e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 2339daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 23401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2341daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2342daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2343daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2344daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2345daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2346daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2347daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 23481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2349daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2350daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2351daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2352b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2353b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2354b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2355b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2356b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2357b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2358b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 23591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2360b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 23611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2362b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2363b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 23641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 236510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 236610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 236710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 23684a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 23694a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 23703b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 237110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 23721aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose break; 23731aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose } 23741aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose 23751aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose default: { 23761aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose const Stmt *S = Loc.castAs<StmtPoint>().getStmt(); 23771aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose 23781aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << S->getStmtClassName() << ' ' << (const void*) S << ' '; 23791aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose LangOptions LO; // FIXME. 23801aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose S->printPretty(Out, 0, PrintingPolicy(LO)); 23811aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose printLocation(Out, S->getLocStart()); 23821aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose 23831aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose if (Loc.getAs<PreStmt>()) 23841aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\lPreStmt\\l;"; 23851aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (Loc.getAs<PostLoad>()) 23861aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\lPostLoad\\l;"; 23871aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (Loc.getAs<PostStore>()) 23881aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\lPostStore\\l"; 23891aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (Loc.getAs<PostLValue>()) 23901aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\lPostLValue\\l"; 23911aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose 23921aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose#if 0 23931aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose // FIXME: Replace with a general scheme to determine 23941aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose // the name of the check. 23951aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose if (GraphPrintCheckerState->isImplicitNullDeref(N)) 23961aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Implicit-Null Dereference.\\l"; 23971aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 23981aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Explicit-Null Dereference.\\l"; 23991aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isUndefDeref(N)) 24001aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Dereference of undefialied value.\\l"; 24011aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isUndefStore(N)) 24021aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Store to Undefined Loc."; 24031aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isUndefResult(N)) 24041aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Result of operation is undefined."; 24051aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isNoReturnCall(N)) 24061aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Call to function marked \"noreturn\"."; 24071aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isBadCall(N)) 24081aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Call to NULL/Undefined."; 24091aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose else if (GraphPrintCheckerState->isUndefArg(N)) 24101aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose Out << "\\|Argument in call is undefined"; 24111aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose#endif 24121aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose 24131aa4f5019164592643bf46b7d61f15b6ef509c8eJordan Rose break; 2414aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2415aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 24161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24178bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 241831ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << "\\|StateID: " << (const void*) state.getPtr() 241931ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky << " NodeID: " << (const void*) N << "\\|"; 24205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2421ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2422ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2423ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2424ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2425ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2426ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2427ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2428aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2429aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2430aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 24311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2432aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2433aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2434ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 24357ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 24369c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 24377ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2438031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2439031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2440031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 24417ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 24427ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2443ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2444ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2445d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 24461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2447ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2448c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose std::vector<const ExplodedNode*> Src; 2449940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2450940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2451940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2452940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2453940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2454940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2455940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2456404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2457404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 24584a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2459404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2460940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 24611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2462c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose ViewGraph(Src); 2463ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2464493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2465493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2466493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2467ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2468d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 24691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2470493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2471493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2472493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2473493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2474493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2475493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2476c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rosevoid ExprEngine::ViewGraph(ArrayRef<const ExplodedNode*> Nodes) { 2477493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2478493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2479493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 24801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2481c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose OwningPtr<ExplodedGraph> TrimmedG(G.trim(Nodes)); 2482493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2483cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 24846cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2485cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2486d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 24871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24883b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2489e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2490e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2491ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2492