ExprEngine.cpp revision 5e5440ba9c135f523f72e7e7c5da59d390d697c5
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" 19199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2016f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 21337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 2255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/AST/StmtObjC.h" 231b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 240bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 2555fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/SourceManager.h" 2655fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/CheckerManager.h" 2855fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 2955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h" 306cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 31c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 3255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/Support/raw_ostream.h" 334323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 340f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 38b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 399ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 40b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 41ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 42c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 43c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 44749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 45749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 46749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 47749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 48749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 49749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 505903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 53e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 54bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 55bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 56bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 573fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 58fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks SetOfConstDecls *VisitedCalleesIn, 5975f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks FunctionSummariesTy *FS, 6075f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks InliningModes HowToInlineIn) 6125e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 621d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 63fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks Engine(*this, FS), 64d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 65c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 67ca5d78d0bc3010164f2f9682967d64d7e305a167Jordan Rose this), 6850a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 69c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 709428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose currStmtIdx(0), currBldrCtx(0), 714ef19205b6912316296db74a9073ad6fa60e4ccaTed Kremenek ObjCNoRet(mgr.getASTContext()), 72fbcb3f11fc90e9f00e6074e9b118b8dc11ca604cAnna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this), 7375f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks VisitedCallees(VisitedCalleesIn), 7475f31c4862643ab09479c979fabf754e7ffe1460Anna Zaks HowToInline(HowToInlineIn) 75255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek{ 764d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned TrimInterval = mgr.options.getGraphTrimInterval(); 774d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose if (TrimInterval != 0) { 784d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose // Enable eager node reclaimation when constructing the ExplodedGraph. 794d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose G.enableNodeReclamation(TrimInterval); 804d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose } 81c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 8250a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 83d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 84cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 8550a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 87e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 88e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 89e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 90e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 918bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 93a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 9652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 985974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 99a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1105974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 111b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 115b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1161397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1179c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 118c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 121dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<DefinedOrUnknownSVal> Constraint = 122dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Constraint_untested.getAs<DefinedOrUnknownSVal>(); 123b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 126b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1278bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 12952e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 130a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 131a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 132a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 133a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 134a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 135a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 136a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 137a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 138a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 141dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = V.getAs<Loc>()) { 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1475974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 15510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek loc::MemRegionVal L = svalBuilder.getCXXThis(MD, SFC); 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 157dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = V.getAs<Loc>()) { 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1615974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 162cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 16552e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 166e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 167e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 1685e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan RoseProgramStateRef 1695e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan RoseExprEngine::createTemporaryRegionIfNeeded(ProgramStateRef State, 1705e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const LocationContext *LC, 1715e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Ex, 1725e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Result) { 17387193dac8f2c6c8f7ee1aa9eeb64622ec75c881bJordan Rose SVal V = State->getSVal(Ex, LC); 1745e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose if (!Result && !V.getAs<NonLoc>()) 1755e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose return State; 1765e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 1775e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose ProgramStateManager &StateMgr = State->getStateManager(); 1785e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose MemRegionManager &MRMgr = StateMgr.getRegionManager(); 1795e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose StoreManager &StoreMgr = StateMgr.getStoreManager(); 1805e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 1815e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // We need to be careful about treating a derived type's value as 1825e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // bindings for a base type. Start by stripping and recording base casts. 1835e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose SmallVector<const CastExpr *, 4> Casts; 1845e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose const Expr *Inner = Ex->IgnoreParens(); 1855e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose while (const CastExpr *CE = dyn_cast<CastExpr>(Inner)) { 1865e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose if (CE->getCastKind() == CK_DerivedToBase || 1875e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose CE->getCastKind() == CK_UncheckedDerivedToBase) 1885e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose Casts.push_back(CE); 1895e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose else if (CE->getCastKind() != CK_NoOp) 1905e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose break; 1915e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose 1925e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose Inner = CE->getSubExpr()->IgnoreParens(); 1935e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose } 194f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 1955e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // Create a temporary object region for the inner expression (which may have 1965e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // a more derived type) and bind the NonLoc value into it. 1975e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose SVal Reg = loc::MemRegionVal(MRMgr.getCXXTempObjectRegion(Inner, LC)); 1985e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose State = State->bindLoc(Reg, V); 1999f1d541ef1aca8f953e5bb4e7177969f0a2062d5Jordan Rose 2005e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose // Re-apply the casts (from innermost to outermost) for type sanity. 2015e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose for (SmallVectorImpl<const CastExpr *>::reverse_iterator I = Casts.rbegin(), 2025e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose E = Casts.rend(); 2035e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose I != E; ++I) { 2045e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose Reg = StoreMgr.evalDerivedToBase(Reg, *I); 205f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 206f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 2075e5440ba9c135f523f72e7e7c5da59d390d697c5Jordan Rose State = State->BindExpr(Result ? Result : Ex, LC, Reg); 208f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose return State; 209f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose} 210f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 211e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 212e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 213e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 214e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 2159c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 21632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 2178bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 218fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 219fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 22032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 22132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 2228bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 223183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 224c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 225c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2268bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 2278bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 228bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *invalidated, 229537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 23066c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 231740d490593e0de8732a697c9f77b90ddd463863bJordan Rose const CallEvent *Call) { 23235bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 23366c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 234c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 235c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 237dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 238dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 239dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 240dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 241e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 24230726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 243ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 244ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 245ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 246ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 24766c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmtIdx = StmtIdx; 24866c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = Ctx; 249ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2509c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2513c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2523c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2533c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 254fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessStmt(const_cast<Stmt*>(E.castAs<CFGStmt>().getStmt()), Pred); 2553c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2563c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 257fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessInitializer(E.castAs<CFGInitializer>().getInitializer(), Pred); 2583c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2593c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2603c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2613c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2623c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 263fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessImplicitDtor(E.castAs<CFGImplicitDtor>(), Pred); 2643c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2659c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 26666c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 2679c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2689c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 269ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 270ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 271ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 272ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 273ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 274ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 275255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if (AMgr.options.AnalysisPurgeOpt == PurgeNone) 276ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 277ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 278ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2797a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Pred->getLocation().getAs<BlockEntrance>()) 280ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 281ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 282ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 283ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 284ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 285ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 286ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 2876062334cc388bce69fb3978c4ecb26c6485a5c2bJordan Rose if (CallEvent::isCallStmt(S.getStmt())) 288ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 289ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 290ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 291ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 292ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 293ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 294ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 295ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 2960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 2970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 29884c484545c5906ba55143e212b4a5275ab55889fJordan Rose const LocationContext *LC, 2990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 3000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 3010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 30284c484545c5906ba55143e212b4a5275ab55889fJordan Rose ReferenceStmt == 0 || isa<ReturnStmt>(ReferenceStmt)) 3038501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks && "PostStmt is not generally supported by the SymbolReaper yet"); 30484c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(LC && "Must pass the current (or expiring) LocationContext"); 30584c484545c5906ba55143e212b4a5275ab55889fJordan Rose 30684c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!DiagnosticStmt) { 30784c484545c5906ba55143e212b4a5275ab55889fJordan Rose DiagnosticStmt = ReferenceStmt; 30884c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(DiagnosticStmt && "Required for clearing a LocationContext"); 30984c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 31084c484545c5906ba55143e212b4a5275ab55889fJordan Rose 3110b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 3129428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose ProgramStateRef CleanedState = Pred->getState(); 31384c484545c5906ba55143e212b4a5275ab55889fJordan Rose 31484c484545c5906ba55143e212b4a5275ab55889fJordan Rose // LC is the location context being destroyed, but SymbolReaper wants a 31584c484545c5906ba55143e212b4a5275ab55889fJordan Rose // location context that is still live. (If this is the top-level stack 31684c484545c5906ba55143e212b4a5275ab55889fJordan Rose // frame, this will be null.) 31784c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!ReferenceStmt) { 31884c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(K == ProgramPoint::PostStmtPurgeDeadSymbolsKind && 31984c484545c5906ba55143e212b4a5275ab55889fJordan Rose "Use PostStmtPurgeDeadSymbolsKind for clearing a LocationContext"); 32084c484545c5906ba55143e212b4a5275ab55889fJordan Rose LC = LC->getParent(); 32184c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 32284c484545c5906ba55143e212b4a5275ab55889fJordan Rose 32384c484545c5906ba55143e212b4a5275ab55889fJordan Rose const StackFrameContext *SFC = LC ? LC->getCurrentStackFrame() : 0; 32484c484545c5906ba55143e212b4a5275ab55889fJordan Rose SymbolReaper SymReaper(SFC, ReferenceStmt, SymMgr, getStoreManager()); 3250b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3260b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 3270b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3280b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 3290b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 3300b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 3310b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 332241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 33377d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 334f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 335f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 3366bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3386bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3396bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 34066c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Out, *currBldrCtx); 341fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, &cleanupTag, K); 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3436bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3446bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3456bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 346fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 3470b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 3480b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 349183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 350fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 351fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 352fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 35366c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(CheckedSet, Out, *currBldrCtx); 354fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 355fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3568bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3576bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3586bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3596bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3606bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3616bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3636bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3646bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3666bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3676bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3686bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3696bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3706bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3718bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3726bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 373fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, &cleanupTag, K); 3746bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 37577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3760b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3770b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3780b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3790b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3800b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 3820b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3839428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose const Stmt *currStmt = S.getStmt(); 3840b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 38566c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmt->getLocStart(), 3860b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3880b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 3890b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 3909428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose if (shouldRemoveDeadBindings(AMgr, S, Pred, Pred->getLocationContext())){ 3919428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose removeDead(Pred, CleanedStates, currStmt, Pred->getLocationContext()); 3920b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 3939428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose CleanedStates.Add(Pred); 3940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3950b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 396dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 3970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 3980b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 399dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 4001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 40166c486f275531df6362b3511fc3af6563561801bTed Kremenek Visit(currStmt, *I, DstI); 402dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 403ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 404ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 405dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 40666c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 407e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 408e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 409d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 410056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 411cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 412563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 413563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 414563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose BMI->getSourceLocation(), 415563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose "Error evaluating initializer"); 416563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 4179428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose // We don't clean up dead bindings here. 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 419056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 4223682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4233682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ProgramStateRef State = Pred->getState(); 4243a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal thisVal = State->getSVal(svalBuilder.getCXXThis(decl, stackFrame)); 4259dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 4263682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostInitializer PP(BMI, stackFrame); 4273682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Tmp(Pred); 4283682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4293a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Evaluate the initializer, if necessary 43000eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 4313a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Constructors build the object directly in the field, 4323a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // but non-objects must be copied in from the initializer. 43307c52d2813a6b5e4025276d3687bd25f75fd51b9Jordan Rose const Expr *Init = BMI->getInit()->IgnoreImplicit(); 4343682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!isa<CXXConstructExpr>(Init)) { 4353a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal FieldLoc; 4363a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose if (BMI->isIndirectMemberInitializer()) 4373a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getIndirectMember(), thisVal); 4383a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose else 4393a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getMember(), thisVal); 4403a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 4413a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal InitVal = State->getSVal(BMI->getInit(), stackFrame); 4423682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4433682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Tmp.clear(); 4443682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose evalBind(Tmp, Init, Pred, FieldLoc, InitVal, /*isInit=*/true, &PP); 4453a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose } 446056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 447563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose assert(BMI->isBaseInitializer() || BMI->isDelegatingInitializer()); 448888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // We already did all the work when visiting the CXXConstructExpr. 449056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 450dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 4513682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose // Construct PostInitializer nodes whether the state changed or not, 4523a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // so that the diagnostics don't get confused. 4533682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Dst; 4543682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose NodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 4553682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose for (ExplodedNodeSet::iterator I = Tmp.begin(), E = Tmp.end(); I != E; ++I) { 4563682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNode *N = *I; 4573682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Bldr.generateNode(PP, N->getState(), N); 4583682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose } 4593a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 460dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 46166c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 4629c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4639c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 464d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 465ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 466ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4673c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4684ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 469fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessAutomaticObjDtor(D.castAs<CFGAutomaticObjDtor>(), Pred, Dst); 4704ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4714ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 472fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessBaseDtor(D.castAs<CFGBaseDtor>(), Pred, Dst); 4734ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4744ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 475fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessMemberDtor(D.castAs<CFGMemberDtor>(), Pred, Dst); 4764ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4774ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 478fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessTemporaryDtor(D.castAs<CFGTemporaryDtor>(), Pred, Dst); 4794ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4804ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4814ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4824ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 483ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 484dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 48566c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 4864ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4874ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 488056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 489056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 490056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4918bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 492056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4932210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4942210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4952210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4962210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4972210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4982210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 499056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 500b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 5015251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie VisitCXXDestructor(varType, dest.castAs<loc::MemRegionVal>().getRegion(), 5025251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie Dtor.getTriggerStmt(), /*IsBase=*/ false, Pred, Dst); 5034ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 5044ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 505d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 506888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 507888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 508888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ProgramStateRef State = Pred->getState(); 509888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 510888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 511888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose Loc ThisPtr = getSValBuilder().getCXXThis(CurDtor, 512888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose LCtx->getCurrentStackFrame()); 513888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal ThisVal = Pred->getState()->getSVal(ThisPtr); 514888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 515888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // Create the base object region. 5164411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose const CXXBaseSpecifier *Base = D.getBaseSpecifier(); 5174411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose QualType BaseTy = Base->getType(); 5184411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose SVal BaseVal = getStoreManager().evalDerivedToBase(ThisVal, BaseTy, 5194411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose Base->isVirtual()); 520888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 5215251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie VisitCXXDestructor(BaseTy, BaseVal.castAs<loc::MemRegionVal>().getRegion(), 5225251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie CurDtor->getBody(), /*IsBase=*/ true, Pred, Dst); 523888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose} 5244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 525d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 5263a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 5273a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const FieldDecl *Member = D.getFieldDecl(); 5283a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 5293a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 5303a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5313a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 5323a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Loc ThisVal = getSValBuilder().getCXXThis(CurDtor, 5333a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose LCtx->getCurrentStackFrame()); 5345251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie SVal FieldVal = 5355251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie State->getLValue(Member, State->getSVal(ThisVal).castAs<Loc>()); 5363a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5373a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose VisitCXXDestructor(Member->getType(), 5385251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie FieldVal.castAs<loc::MemRegionVal>().getRegion(), 539200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose CurDtor->getBody(), /*IsBase=*/false, Pred, Dst); 5403a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose} 5414ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 542d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 543056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 544056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 5459c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 54648b6247804eacc262cc5508e0fbb74ed819fbb6eJordan Rosevoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 5476889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 5480bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 5490bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 5500bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 5516889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 55266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, DstTop, *currBldrCtx); 5530bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 554e9cd031c77a92015571425b6445e8867816997cdJordan Rose assert(!isa<Expr>(S) || S == cast<Expr>(S)->IgnoreParens()); 5551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 556e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 557f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 558f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5639be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 564c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5676ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5684ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 56921ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 570552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 572c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5736b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 574be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 575c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 5769a4db032ecd991626d236a502e770126db32bd31Richard Smith case Stmt::FunctionParmPackExprClass: 57728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 57828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 57901d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 580ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 581fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose const ExplodedNode *node = Bldr.generateSink(S, Pred, Pred->getState()); 58266c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.addAbortedBlock(node, currBldrCtx->getBlock()); 583c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 584c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5855fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 586f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 587f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 588f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 589f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 59646eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 599d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 601d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 6021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 6031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 604534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 6051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 6061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 607d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 608d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 609ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6124ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCSubscriptRefExprClass: 6134ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCPropertyRefExprClass: 6144ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose llvm_unreachable("These are handled by PseudoObjectExpr"); 6154ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose 6168ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 6178f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 6188bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 6195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 6205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 621ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 6228ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 6238ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 6248ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 6254beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 626ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 6274beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 628ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6294beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 6304beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 631ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 632e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 633f85e193739c953358c865005855253af4f68a497John McCall break; 634f85e193739c953358c865005855253af4f68a497John McCall 6351b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 6361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 6371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 6381b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 6391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 6401b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 642f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 6431b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 6441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 6451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6461b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 6471b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 651e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 65256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 65361eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 654276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 655337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 659bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 660bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 661bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 662c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 663c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 664477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6651a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 666bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 667f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 668e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 669e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 670cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 67169a0e5021c5c49a34aa25cd89b1e613a52097e65Jordan Rose case Stmt::SubstNonTypeTemplateParmExprClass: 672bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 673bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 674bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 675bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 676bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 677bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 678e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 679bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 68138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose case Stmt::CXXDefaultArgExprClass: { 68238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.takeNodes(Pred); 68338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet PreVisit; 68438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 68538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 68638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet Tmp; 68738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose StmtNodeBuilder Bldr2(PreVisit, Tmp, *currBldrCtx); 68838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 68938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 69038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose const Expr *ArgE = cast<CXXDefaultArgExpr>(S)->getExpr(); 69138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 69238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose // Avoid creating and destroying a lot of APSInts. 69338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose SVal V; 69438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose llvm::APSInt Result; 69538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 69638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose for (ExplodedNodeSet::iterator I = PreVisit.begin(), E = PreVisit.end(); 69738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose I != E; ++I) { 69838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ProgramStateRef State = (*I)->getState(); 69938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 70038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose if (ArgE->EvaluateAsInt(Result, getContext())) 70138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose V = svalBuilder.makeIntVal(Result); 70238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose else 70338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose V = State->getSVal(ArgE, LCtx); 70438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 70538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose State = State->BindExpr(S, LCtx, V); 70638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr2.generateNode(S, *I, State); 70738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 70838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 70938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 71038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.addNodes(Dst); 71138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose break; 71238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 71338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 7141a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 71570fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 71670fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 71770fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 71870fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 7191a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 7201a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7211a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 7221a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 7231a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7241a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 72566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currBldrCtx); 7261a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 72770fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 72870fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 72970fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 7301a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 7311a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 7321a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 7331a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 7343b1df8bb941a18c4a7256d7cfcbccb9de7e39995Ted Kremenek SVal result = svalBuilder.conjureSymbolVal(0, Ex, LCtx, resultType, 73566c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx->blockCount()); 7361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 7371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 7381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 7391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 7411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 7421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 7431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 7441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 745540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 746ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 747892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 749540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 7501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 751df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier case Stmt::GCCAsmStmtClass: 752ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 753df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier VisitGCCAsmStmt(cast<GCCAsmStmt>(S), Pred, Dst); 754ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 755e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 756b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 7578cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 7588cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 7598cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 7608cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 7618cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 7628cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 763c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 764ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 765c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 766ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 767c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 768c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 77003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 771e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 773e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 775e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 776e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7772de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 7788bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 7805eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 7815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 7825eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 783e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 784e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 78506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 786ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 787ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 7880caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && 789bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 790031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 791892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7920caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, cast<Expr>(S)); 79348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 79448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 795892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 79648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 797ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 798e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 799e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 80006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 801f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose case Stmt::CXXOperatorCallExprClass: { 802f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const CXXOperatorCallExpr *OCE = cast<CXXOperatorCallExpr>(S); 803f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 804f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // For instance method operators, make sure the 'this' argument has a 805f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // valid region. 806f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const Decl *Callee = OCE->getCalleeDecl(); 807f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(Callee)) { 808f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) { 809f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef State = Pred->getState(); 810f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 811f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef NewState = 812f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose createTemporaryRegionIfNeeded(State, LCtx, OCE->getArg(0)); 813f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (NewState != State) 814f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Pred = Bldr.generateNode(OCE, Pred, NewState, /*Tag=*/0, 815f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramPoint::PreStmtKind); 816f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 817f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 818f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // FALLTHROUGH 819f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 820b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 8219fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 8229fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 824b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 825ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 82606fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 827e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 828337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 829337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 830337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 831337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 832337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 833337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 834337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 83506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 836744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 837888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose case Stmt::CXXConstructExprClass: { 838ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 839888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXConstructExpr(cast<CXXConstructExpr>(S), Pred, Dst); 840ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8417ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 8427ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 8437ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 844d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXNewExprClass: { 845d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 846d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PostVisit; 847d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXNewExpr(cast<CXXNewExpr>(S), Pred, PostVisit); 848d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPostStmt(Dst, PostVisit, S, *this); 849d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 850d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 851d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 852d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 853d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXDeleteExprClass: { 854d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 855d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PreVisit; 856d74324371465a152387ac45e737ab7d23e543552Anton Yartsev const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 857d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 858d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 859d74324371465a152387ac45e737ab7d23e543552Anton Yartsev for (ExplodedNodeSet::iterator i = PreVisit.begin(), 860d74324371465a152387ac45e737ab7d23e543552Anton Yartsev e = PreVisit.end(); i != e ; ++i) 861d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXDeleteExpr(CDE, *i, Dst); 862d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 863d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 864d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 865d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 866e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 867e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 869e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 870ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8719c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 872e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 873ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 874e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 875e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 877e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 878ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 879892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 880ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 881e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 882f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 883f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 884ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 885892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 886ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 887f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 890e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 891ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 89256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 89356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 89456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 895ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 896e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 897e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 899bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 900ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 901bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 902ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 903bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 904bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 905892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 906ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 907892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 908892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 909ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 910e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 911892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 9121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 913e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 914ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 915e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 916ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 917e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9190835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 9200d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 9210d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 9220d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 9230d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 9240d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 925f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 926f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 927ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 929f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 930f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 931f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 932f85e193739c953358c865005855253af4f68a497John McCall 933f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 934f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 935f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 936f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 937f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 938f85e193739c953358c865005855253af4f68a497John McCall } 939f85e193739c953358c865005855253af4f68a497John McCall 940f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 941f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 942ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 943e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 944e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 945b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 94603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 947ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 948c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose const MaterializeTemporaryExpr *MTE = cast<MaterializeTemporaryExpr>(S); 949c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose CreateCXXTemporaryObject(MTE, Pred, Dst); 950ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 95103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 95203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 95303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 954c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 955ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 956c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 957ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 958c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 9591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 961ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 962892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 963ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 964469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 965ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 96697ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 967ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 968892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 969ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 97097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 971af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 972af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 973ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 974af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 975ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 976af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 9771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 978d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose case Stmt::ObjCMessageExprClass: 979ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 980d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 981ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 982e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 984c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::ObjCAtThrowStmtClass: 985c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::CXXThrowExprClass: 986bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 987bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 988fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateSink(S, Pred, Pred->getState()); 989bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 9901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9911b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 992ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9931b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 994ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9951b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9978ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 998ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9998ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 1000ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 10018ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 10028ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 1003f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 1004ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1005f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 1006f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 1007ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1008e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 10091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1010e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 10119c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 1012a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 1013a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 1014a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 1015a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 1016a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 1017a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 1018a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 10191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10209c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 10218bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 1022ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 10235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 10245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 10255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 1026a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 1027e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 1028e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 10296987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 103072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 1031ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 103203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 10330caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && (U->getOpcode() == UO_LNot)) { 1034031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1035892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 10360caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, U); 103772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 103872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 1039892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 1040ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 10411b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 104272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 10434b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10444b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 10454b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 10468bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 10474b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 10484b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 10495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 10505eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 10515eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 10524b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10534b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 10545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 10555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 10565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 10574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10584b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 10594b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 10604b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10611b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 10621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 10631b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 10645903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 10655903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 10665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10675903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 10685903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 10695903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 107028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose const Stmt *CE = CalleeSF->getCallSite(); 10715903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10725903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 10735903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 10745903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 10755903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 10765903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 10775903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 10795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 10805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10815903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 108228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // processing the call. 10830b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 10845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10857a95de68c093991047ed8d339479ccad51b88663David Blaikie if (L.getAs<PreImplicitCall>()) 108628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose continue; 10877a95de68c093991047ed8d339479ccad51b88663David Blaikie if (L.getAs<CallEnter>()) 1088852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose continue; 10897a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Optional<StmtPoint> SP = L.getAs<StmtPoint>()) 109028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SP->getStmt() == CE) 10915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1095253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 110128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // Note that CE is permitted to be NULL! 11025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 11035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 11045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 11055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 11065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 110716303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState = 110816303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState->set<ReplayWithoutInlining>(const_cast<Stmt *>(CE)); 11095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 11115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 11125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1113253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1114253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1115253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1116253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1117253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 11185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 11195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 11205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 11215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 11225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 11235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 11245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 11255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 11265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1127c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1128253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1129b355be838a22a511d078504b2277f70aea52ca85Anna Zaks NodeBuilderWithSinks &nodeBuilder, 1130b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 113127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 113227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 11332fa9d72d4d23ccdcd4137946e5ebafac7a04f04cTed Kremenek if (nodeBuilder.getContext().blockCount() >= AMgr.options.maxBlockVisitOnPath) { 1134ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1135253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1136b355be838a22a511d078504b2277f70aea52ca85Anna Zaks nodeBuilder.generateSink(Pred->getState(), Pred, &tag); 1137749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1138749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1139749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 1140b355be838a22a511d078504b2277f70aea52ca85Anna Zaks const LocationContext *CalleeLC = Pred->getLocation().getLocationContext(); 11413bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 11425903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 11435903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 11443bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1145e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 11463bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 11475903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 11485903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 11495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 11505903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1151255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if ((!AMgr.options.NoRetryExhausted && 1152b355be838a22a511d078504b2277f70aea52ca85Anna Zaks replayWithoutInlining(Pred, CalleeLC))) 1153253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1154253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 11555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1156749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1157253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1158253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1159253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 116027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1161e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1162e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1163e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1164e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1165e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1166e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 11676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1172294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11738bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1174294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11755eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1176294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11776ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 117803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11796ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11806ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11816ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11826ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11836ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11866ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11876ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11886ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11896ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11916ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11926ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11936ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11946ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11956ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11976ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11986ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11996ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12006ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 12016ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 12026ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12036ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 12046ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 12051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 12076ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 12086ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 12093f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenekstatic const Stmt *ResolveCondition(const Stmt *Condition, 12103f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const CFGBlock *B) { 12113f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 12123f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 12133f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12143f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const BinaryOperator *BO = dyn_cast<BinaryOperator>(Condition); 12153f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 12163f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12173f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12183f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // For logical operations, we still have the case where some branches 12193f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // use the traditional "merge" approach and others sink the branch 12203f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // directly into the basic blocks representing the logical operation. 12213f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // We need to distinguish between those two cases here. 12223f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12233f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // The invariants are still shifting, but it is possible that the 12243f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // last element in a CFGBlock is not a CFGStmt. Look for the last 12253f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // CFGStmt as the value of the condition. 12263f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend(); 12273f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek for (; I != E; ++I) { 12283f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGElement Elem = *I; 1229fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGStmt CS = Elem.getAs<CFGStmt>(); 12303f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!CS) 12313f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek continue; 1232fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie if (CS.getStmt() != Condition) 12333f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek break; 12343f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12353f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 12363f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12373f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek assert(I != E); 12383f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12393f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek while (Condition) { 12403f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek BO = dyn_cast<BinaryOperator>(Condition); 12413f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 12423f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12433f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = BO->getRHS()->IgnoreParens(); 12443f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 12453f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek llvm_unreachable("could not resolve condition"); 12463f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek} 12473f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12489c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1249a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1250ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 12511aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1252a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1253a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 125466c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = &BldCtx; 1255f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1256b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 12571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 12581aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1259a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 12604e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1261b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1262b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 12631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12643f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12653f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // Resolve the condition in the precense of nested '||' and '&&'. 12663f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 12673f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 12683f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12693f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = ResolveCondition(Condition, BldCtx.getBlock()); 127021028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 127121028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 127221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 12730fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1274f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1275f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 12764e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 12778ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1278f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 12798ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1281f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1282f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1283f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1284cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1285cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1286cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1287cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1288cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 128912b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks ProgramStateRef PrevState = PredI->getState(); 129012b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks SVal X = PrevState->getSVal(Condition, PredI->getLocationContext()); 1291cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1292cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1293cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1294cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1295cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1296cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1297cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1298cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1299cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1300cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1301cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 130212b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks PredI->getLocationContext(), 1303cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1304cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1305cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1306cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1307cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 13080835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1309b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 13100835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 13115eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 13120835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 131373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 1314829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, true, PredI); 1315829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, false, PredI); 1316cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 13171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13195251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedSVal V = X.castAs<DefinedSVal>(); 13200835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 13216960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StTrue, StFalse; 13226960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StTrue, StFalse) = PrevState->assume(V); 13236960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 1324cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1325cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 13266960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StTrue) 13276960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StTrue, true, PredI); 1328cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1329cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1330cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1332cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1333cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 13346960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StFalse) 13356960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StFalse, false, PredI); 1336cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1337cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1338cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1339cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 134066c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 1341f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1342f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1343e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1344754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1345ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1346754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13478bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 13491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1350754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1351754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1352754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 13534a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1354754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1355754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 13561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1357d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1358754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 1359dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::GotoLabel> LV = V.getAs<loc::GotoLabel>()) { 13605251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie const LabelDecl *L = LV->getLabel(); 13611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1362ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 136324f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1364a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1365754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1366754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1367754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1369b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1370754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1371754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13725251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (V.getAs<loc::ConcreteInt>() || V.getAs<UndefinedVal>()) { 1373754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 13742055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 13752055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 13762055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1377754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1378754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1380754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1381b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1383754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1384a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1385754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1386f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1387d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 138873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1389b355be838a22a511d078504b2277f70aea52ca85Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC, 1390b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 1391b355be838a22a511d078504b2277f70aea52ca85Anna Zaks StateMgr.EndPath(Pred->getState()); 13928501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 1393af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 13948501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks if (Pred->getLocationContext()->inTopFrame()) { 13958501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Remove dead symbols. 13968501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks ExplodedNodeSet AfterRemovedDead; 13978501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks removeDeadOnEndOfFunction(BC, Pred, AfterRemovedDead); 13988501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 13998501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Notify checkers. 14008501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks for (ExplodedNodeSet::iterator I = AfterRemovedDead.begin(), 14018501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks E = AfterRemovedDead.end(); I != E; ++I) { 1402344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, *I, *this); 14038501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 14048501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } else { 1405344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, Pred, *this); 14068501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 14078501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 14084d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 140973099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 141073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1411d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1412daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1413e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1414d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 14158bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 14169c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 14175eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1418daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 14195b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 14202055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1421b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 14222055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 14232055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1424daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1425daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14265251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedOrUnknownSVal CondV = CondV_untested.castAs<DefinedOrUnknownSVal>(); 1427692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 14288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 142934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 143034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 143134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 14321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 143334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1434e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1435e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1436e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1437e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 14389c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 143972afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 144072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 144185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 144285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 14431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1444daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 144585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 144685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 144785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 144814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 144914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1451daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1452daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1453aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 14541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 145514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 145685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 14579c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 145848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1459b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 14618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1462a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 14631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1464daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1465daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1466daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 14675251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (CondV.getAs<nonloc::ConcreteInt>()) 1468daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1469daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1471daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1472daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 147348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 14748bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 147548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 147648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 147748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 147848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 147948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 148048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 148148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 14825014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1483b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 148414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 148585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 148614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 148885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 148985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 14901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 149114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1492daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14944d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14954d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14964d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14974d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 15004d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 15014d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 15024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 15034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 15044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 15054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 15064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 15074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 15084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 15094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 15104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 15114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1512daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1513daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1514e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1515ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1516e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1517d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1518d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1519d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1520d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 152166c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1522ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15238bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15256d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 15269c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1527591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1528d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1529a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1530892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1531892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1532892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1533892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1534892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1535892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1536892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1537852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 15386d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1539fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1540ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1541852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1542892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 15439c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1544591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1545c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 15465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 15476d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1548892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 15499c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1550c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1551fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1552ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 15536d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 15541b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 15555aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 1556fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose // FIXME: Compute lvalue of field pointers-to-member. 15570156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // Right now we just use a non-null void pointer, so that it gives proper 15580156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // results in boolean contexts. 15590156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose SVal V = svalBuilder.conjureSymbolVal(Ex, LCtx, getContext().VoidPtrTy, 15600156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose currBldrCtx->blockCount()); 15615251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->assume(V.castAs<DefinedOrUnknownSVal>(), true); 15620156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1563fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 15645aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 15655aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 15665aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 1567fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose llvm_unreachable("Support for this Decl not implemented."); 15683271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 15693271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1570540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 15719c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 15729c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15739c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 15741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15759c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 15769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1577892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15798f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 15808f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 15818f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 158266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currBldrCtx); 1583ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15848f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 15858f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 15865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 15878bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 15885eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 15895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 15905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1591591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 1592fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 0, 1593fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 15941b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1595540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1596540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1597469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15989c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15996889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 16001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 160166c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, TopDst, *currBldrCtx); 16026889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 1603603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose ValueDecl *Member = M->getMemberDecl(); 160410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1605603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // Handle static member variables and enum constants accessed via 1606603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // member syntax. 1607603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (isa<VarDecl>(Member) || isa<EnumConstantDecl>(Member)) { 1608ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1609603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose VisitCommonDeclRefExpr(M, Member, Pred, Dst); 1610ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 16115bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 16125bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 161310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1614f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef state = Pred->getState(); 1615f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 1616f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Expr *BaseExpr = M->getBase(); 1617f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 161810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 1619603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(Member)) { 1620f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) 1621f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 162210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1623f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal MDVal = svalBuilder.getFunctionPointer(MD); 1624f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = state->BindExpr(M, LCtx, MDVal); 162520aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1626f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Bldr.generateNode(M, Pred, state); 1627ce6644bc1e921833f9b3c10cf7d4a0b78e8d5dc9Jordan Rose return; 162820aa40342bd74895128860c081aa84cd85bfa68dJordan Rose } 162920aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1630f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // Handle regular struct fields / member variables. 1631f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 1632f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal baseExprVal = state->getSVal(BaseExpr, LCtx); 1633d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose 1634603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose FieldDecl *field = cast<FieldDecl>(Member); 1635e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 16366b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (M->isGLValue()) { 16376b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (field->getType()->isReferenceType()) { 1638d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose if (const MemRegion *R = L.getAsRegion()) 1639d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose L = state->getSVal(R); 1640d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose else 16416b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = UnknownVal(); 16426b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } 16436b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose 1644d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), 0, 1645d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose ProgramPoint::PostLValueKind); 16466b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } else { 1647ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1648bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1649ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1650ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1651469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1652469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 1653bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksnamespace { 1654bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksclass CollectReachableSymbolsCallback : public SymbolVisitor { 1655bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols Symbols; 1656bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zakspublic: 1657bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback(ProgramStateRef State) {} 1658bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &getSymbols() const { return Symbols; } 1659bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1660bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool VisitSymbol(SymbolRef Sym) { 1661bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Symbols.insert(Sym); 1662bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return true; 1663bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1664bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks}; 1665bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} // end anonymous namespace 1666bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 16671655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// A value escapes in three possible cases: 16681655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (1) We are binding to something that is not a memory region. 16691655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (2) We are binding to a MemrRegion that does not have stack storage. 16701655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (3) We are binding to a MemRegion with stack storage that the store 16711655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// does not understand. 1672bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef ExprEngine::processPointerEscapedOnBind(ProgramStateRef State, 16731655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks SVal Loc, SVal Val) { 1674bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Are we storing to something that causes the value to "escape"? 1675bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool escapes = true; 1676bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1677bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // TODO: Move to StoreManager. 1678dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> regionLoc = Loc.getAs<loc::MemRegionVal>()) { 1679bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = !regionLoc->getRegion()->hasStackStorage(); 1680bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1681bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) { 1682bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // To test (3), generate a new state with the binding added. If it is 1683bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the same state, then it escapes (since the store cannot represent 1684bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the binding). 1685bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Do this only if we know that the store is not supposed to generate the 1686bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // same state. 1687bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SVal StoredVal = State->getSVal(regionLoc->getRegion()); 1688bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (StoredVal != Val) 1689bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = (State == (State->bindLoc(*regionLoc, Val))); 1690bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1691b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks if (!escapes) { 1692b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // Case 4: We do not currently model what happens when a symbol is 1693b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // assigned to a struct field, so be conservative here and let the symbol 1694b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // go. TODO: This could definitely be improved upon. 1695b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks escapes = !isa<VarRegion>(regionLoc->getRegion()); 1696b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks } 1697bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1698bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1699bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If our store can represent the binding and we aren't storing to something 1700bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // that doesn't have local storage then just return and have the simulation 1701bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // state continue as is. 1702bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) 1703bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1704bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1705bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Otherwise, find all symbols referenced by 'val' that we are tracking 1706bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // and stop tracking them. 1707bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback Scanner = 1708bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State->scanReachableSymbols<CollectReachableSymbolsCallback>(Val); 1709bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &EscapedSymbols = Scanner.getSymbols(); 1710bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1711bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks EscapedSymbols, 1712233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks /*CallEvent*/ 0, 1713233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks PSK_EscapeOnBind); 1714bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1715bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1716bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1717bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1718bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef 1719bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksExprEngine::processPointerEscapedOnInvalidateRegions(ProgramStateRef State, 1720bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *Invalidated, 1721bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> ExplicitRegions, 1722bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> Regions, 1723bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const CallEvent *Call) { 1724bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1725bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Invalidated || Invalidated->empty()) 1726bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1727bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1728bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Call) 1729bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return getCheckerManager().runCheckersForPointerEscape(State, 1730233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks *Invalidated, 1731233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks 0, 1732233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks PSK_EscapeOther); 1733bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1734bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If the symbols were invalidated by a call, we want to find out which ones 1735bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // were invalidated directly due to being arguments to the call. 1736bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsDirectlyInvalidated; 1737bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (ArrayRef<const MemRegion *>::iterator I = ExplicitRegions.begin(), 1738bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = ExplicitRegions.end(); I != E; ++I) { 1739bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (const SymbolicRegion *R = (*I)->StripCasts()->getAs<SymbolicRegion>()) 1740bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsDirectlyInvalidated.insert(R->getSymbol()); 1741bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1742bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1743bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsIndirectlyInvalidated; 1744bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (InvalidatedSymbols::const_iterator I=Invalidated->begin(), 1745bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = Invalidated->end(); I!=E; ++I) { 1746bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolRef sym = *I; 1747bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (SymbolsDirectlyInvalidated.count(sym)) 1748bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks continue; 1749bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsIndirectlyInvalidated.insert(sym); 1750bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1751bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1752bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsDirectlyInvalidated.empty()) 1753bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1754233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsDirectlyInvalidated, Call, PSK_DirectEscapeOnCall); 1755bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1756bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Notify about the symbols that get indirectly invalidated by the call. 1757bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsIndirectlyInvalidated.empty()) 1758bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1759233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsIndirectlyInvalidated, Call, PSK_IndirectEscapeOnCall); 1760bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1761bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1762bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1763bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 17649c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 17659c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 17669c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 176793bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 176832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek SVal location, SVal Val, 17693682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose bool atDeclInit, const ProgramPoint *PP) { 17703682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 17713682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose const LocationContext *LC = Pred->getLocationContext(); 17723682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostStmt PS(StoreE, LC); 17733682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!PP) 17743682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PP = &PS; 1775b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1776b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1777fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1778fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 17793682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose StoreE, *this, *PP); 1780b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1781bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1782bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Dst, *currBldrCtx); 1783bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 178432a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // If the location is not a 'Loc', it will already be handled by 178532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // the checkers. There is nothing left to do. 17865251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (!location.getAs<Loc>()) { 1787bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, /*Loc*/0, /*tag*/0); 1788bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ProgramStateRef state = Pred->getState(); 1789bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1790bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Bldr.generateNode(L, state, Pred); 179132a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek return; 179232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 179332a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 17946b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1795b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1796b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 17973d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 17983d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 179932a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 1800bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1801bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 180232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // When binding the value, pass on the hint that this is a initialization. 180332a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // For initializations, we do not need to inform clients of region 180432a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // changes. 18055251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(location.castAs<Loc>(), 180632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek Val, /* notifyChanges = */ !atDeclInit); 1807bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 18083d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 1809dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> LocRegVal = 18105251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie location.getAs<loc::MemRegionVal>()) { 18113d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 181232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 18133682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 18143d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 1815fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(L, state, PredI); 1816b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1817a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1818a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 18199c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1820a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 18212e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1822e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 18232e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1824a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1825a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1826a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 18279c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 18289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 18299c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 18308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1831ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 183214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 183314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 183414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 183514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 18361b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1837b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1838bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 18391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1840b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 18411b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1842b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 184373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 184473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1845a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1846b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 18473d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 18481b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 18491b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1850bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1851bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1852bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1853bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1854bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1855bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1856bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1857bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1858bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 18595251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert(!location.getAs<NonLoc>() && "location cannot be a NonLoc."); 186014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 18615b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1862852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1863852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 18649697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 18659697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1866b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1867018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1868852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1869ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1870ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1871852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1872bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1873bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1874852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1875852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1876852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1877852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1878db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1879bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1880bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1881b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1882852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1883852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1884852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1885b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1886bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1887852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1888852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1889bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1890bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1891bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1892bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1893bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1894bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1895bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1896bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1897bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1898bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 18991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1900b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1901bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1902b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 19031b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1904b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 190566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 190673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 190773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1908b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 19091b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1910b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1911db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 19125eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 191396ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 19147affe151f5689b2d3547b8947c4099532c78a021Jordan Rose SVal V = UnknownVal(); 19157affe151f5689b2d3547b8947c4099532c78a021Jordan Rose if (location.isValid()) { 191696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1917bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 19185251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie V = state->getSVal(location.castAs<Loc>(), LoadTy); 1919b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 19207affe151f5689b2d3547b8947c4099532c78a021Jordan Rose 19217affe151f5689b2d3547b8947c4099532c78a021Jordan Rose Bldr.generateNode(NodeEx, *NI, state->BindExpr(BoundEx, LCtx, V), tag, 19227affe151f5689b2d3547b8947c4099532c78a021Jordan Rose ProgramPoint::PostLoadKind); 1923d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 19241b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 19251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1926bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1927bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1928bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1929bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1930bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1931bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1932bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1933bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 193466c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder BldrTop(Pred, Dst, *currBldrCtx); 193500b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1936769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1937b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1938b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1939b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 19409c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1941ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 194266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Src, *currBldrCtx); 1943ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1944eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1945eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1946eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1947eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1948eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1949eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1950eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1951eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1952ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1953fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose static SimpleProgramPointTag tag("ExprEngine: Location"); 1954fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(NodeEx, Pred, state, &tag); 19550296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1956ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1957bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1958bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1959ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1960ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1961ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 19626c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 19630caa2d47b84337e942b3f6652adfafe4ae506cfeTed KremenekExprEngine::geteagerlyAssumeBinOpBifurcationTags() { 19646c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 19650caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationTrue("ExprEngine : Eagerly Assume True"), 19660caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationFalse("ExprEngine : Eagerly Assume False"); 19670caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek return std::make_pair(&eagerlyAssumeBinOpBifurcationTrue, 19680caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek &eagerlyAssumeBinOpBifurcationFalse); 19696c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 19706c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 19710caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenekvoid ExprEngine::evalEagerlyAssumeBinOpBifurcation(ExplodedNodeSet &Dst, 19720caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek ExplodedNodeSet &Src, 19730caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek const Expr *Ex) { 197466c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Src, Dst, *currBldrCtx); 197586b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1976031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1977031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1978b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1979b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1980b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 19827a95de68c093991047ed8d339479ccad51b88663David Blaikie if (!P.getAs<PostStmt>() || P.castAs<PostStmt>().getStmt() != Ex) { 1983b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 19841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1985b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 19868bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 19875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 1988dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<nonloc::SymbolVal> SEV = V.getAs<nonloc::SymbolVal>(); 19895344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 19906c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 19910caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek geteagerlyAssumeBinOpBifurcationTags(); 19926c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 19936960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StateTrue, StateFalse; 19946960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StateTrue, StateFalse) = state->assume(*SEV); 19956960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 199648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 19976960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateTrue) { 199886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 19995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 2000fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateTrue, tags.first); 200148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 20021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 200348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 20046960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateFalse) { 200586b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 20065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 2007fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateFalse, tags.second); 200848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 200948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 201048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 201148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 201248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 2013df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosiervoid ExprEngine::VisitGCCAsmStmt(const GCCAsmStmt *A, ExplodedNode *Pred, 2014df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier ExplodedNodeSet &Dst) { 201566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 2016a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 2017a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 20181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2019a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 2020a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 2021a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 20221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2023a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 20241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2025df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier for (GCCAsmStmt::const_outputs_iterator OI = A->begin_outputs(), 2026a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 2027a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 20285251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert (!X.getAs<NonLoc>()); // Should be an Lval, or unknown, undef. 20291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2030dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = X.getAs<Loc>()) 20315251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(*LV, UnknownVal()); 2032ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 20331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2034a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 2035ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 2036ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 20378cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 20388cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 203966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 20408cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 20418cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 20428cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 2043094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 2044e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 2045ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 2046ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 2047aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 2048d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 2049e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 20503b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 2051aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 2052aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 205347491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 2054aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 2055006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2056006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 2057006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2058d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 2059ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 20609c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 20611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 206210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 206310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 206410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 2065a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 20669dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 20674a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 20684a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 20694a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 20705e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 20712ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 20722ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 2073a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 20741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20758cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 20768cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 20772055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 2078a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 2079a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 20801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2081cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko static void printLocation(raw_ostream &Out, SourceLocation SLoc) { 208228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SLoc.isFileID()) { 208328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "\\lline=" 208428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 208528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << " col=" 208628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 208728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << "\\l"; 208828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 208928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 209028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 20919c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 20921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 209353ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 209453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 2095803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 2096803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 2097aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 20981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2099aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 21000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 21011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 21027a95de68c093991047ed8d339479ccad51b88663David Blaikie << Loc.castAs<BlockEntrance>().getBlock()->getBlockID(); 21030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 21040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 21050b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 21060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 21070b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 21080b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 2109aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 21100b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 21111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2112aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 2113aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 2114aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 21151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2116102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 2117102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 2118102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2119102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 21200b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 21210b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 21220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 21230b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 21240b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 21250b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 21260b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 21270b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 21280b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 21290b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 21300b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 21310b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 21320b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 21330b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 2134102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2135102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 21365903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 21375903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 21385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 21395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 214028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PreImplicitCallKind: { 21417a95de68c093991047ed8d339479ccad51b88663David Blaikie ImplicitCallPoint PC = Loc.castAs<ImplicitCallPoint>(); 214228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PreCall: "; 214328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 214428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 21457a95de68c093991047ed8d339479ccad51b88663David Blaikie PC.getDecl()->print(Out, LangOptions()); 21467a95de68c093991047ed8d339479ccad51b88663David Blaikie printLocation(Out, PC.getLocation()); 214728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 214828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 214928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 215028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PostImplicitCallKind: { 21517a95de68c093991047ed8d339479ccad51b88663David Blaikie ImplicitCallPoint PC = Loc.castAs<ImplicitCallPoint>(); 215228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PostCall: "; 215328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 215428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 21557a95de68c093991047ed8d339479ccad51b88663David Blaikie PC.getDecl()->print(Out, LangOptions()); 21567a95de68c093991047ed8d339479ccad51b88663David Blaikie printLocation(Out, PC.getLocation()); 215728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 215828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 215928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 2160aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 21617a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Optional<StmtPoint> L = Loc.getAs<StmtPoint>()) { 21629c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 21638c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 216431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << S->getStmtClassName() << ' ' << (const void*) S << ' '; 2165e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2166e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 216728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, S->getLocStart()); 21681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21697a95de68c093991047ed8d339479ccad51b88663David Blaikie if (Loc.getAs<PreStmt>()) 21701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 21717a95de68c093991047ed8d339479ccad51b88663David Blaikie else if (Loc.getAs<PostLoad>()) 21727090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 21737a95de68c093991047ed8d339479ccad51b88663David Blaikie else if (Loc.getAs<PostStore>()) 21747090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 21757a95de68c093991047ed8d339479ccad51b88663David Blaikie else if (Loc.getAs<PostLValue>()) 21767090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 21771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 217810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 217910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 218010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 21818c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 21828c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 21838c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 21848c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 21858c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 21868c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 21878c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 21888c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 21898c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 21908c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 21918c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 21928c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 21938c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 21948c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 21958c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 21968c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 219710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 21981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 22008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 22018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 22027a95de68c093991047ed8d339479ccad51b88663David Blaikie const BlockEdge &E = Loc.castAs<BlockEdge>(); 2203aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 2204aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 22051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22069c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 22071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2208e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 22091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2210b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 2211e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2212e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 22131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22149b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 22159b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 2216642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 22177da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 2218a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 22199b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 22201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2221daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 22229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 22231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 22259c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 2226daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 2227e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2228e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 22291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22309c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 2231daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 2232e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 2233daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 22341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2235daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2236daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2237daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2238daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2239daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2240daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2241daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 22421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2243daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2244daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2245daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2246b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2247b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2248b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2249b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2250b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2251b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2252b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 22531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2254b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 22551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2256b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2257b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 22581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 225910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 226010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 226110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 22624a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 22634a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 22643b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 226510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2266aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2267aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 22681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22698bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 227031ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << "\\|StateID: " << (const void*) state.getPtr() 227131ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky << " NodeID: " << (const void*) N << "\\|"; 22725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2273ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2274ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2275ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2276ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2277ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2278ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2279ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2280aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2281aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2282aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 22831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2284aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2285aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2286ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 22877ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 22889c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 22897ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2290031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2291031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2292031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 22937ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 22947ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2295ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2296ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2297d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 22981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2299ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2300031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2301940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2302940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2303940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2304940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2305940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2306940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2307940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2308404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2309404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 23104a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2311404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2312940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 23131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23147ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2315ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2316493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2317493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2318493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2319ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2320d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 23211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2322493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2323493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2324493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2325493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2326493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2327493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2328d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2329493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2330493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2331493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 23321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2333031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2334493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2335cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 23366cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2337cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2338d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 23391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23403b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2341e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2342e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2343ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2344