ExprEngine.cpp revision fdf6a279c9a75c778eba382d9a156697092982a1
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 168f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose/// If the value of the given expression is a NonLoc, copy it into a new 169f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose/// temporary region, and replace the value of the expression with that. 170f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rosestatic ProgramStateRef createTemporaryRegionIfNeeded(ProgramStateRef State, 171f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LC, 172f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const Expr *E) { 173f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal V = State->getSVal(E, LC); 174f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 1755251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (V.getAs<NonLoc>()) { 176f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose MemRegionManager &MRMgr = State->getStateManager().getRegionManager(); 177f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const MemRegion *R = MRMgr.getCXXTempObjectRegion(E, LC); 178f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose State = State->bindLoc(loc::MemRegionVal(R), V); 179f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose State = State->BindExpr(E, LC, loc::MemRegionVal(R)); 180f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 181f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 182f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose return State; 183f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose} 184f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 185e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 186e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 187e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 188e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1899c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 19032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1918bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 192fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 193fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 19432a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 19532a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1968bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 197183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 198c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 199c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2008bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 2018bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 202bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *invalidated, 203537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 20466c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 205740d490593e0de8732a697c9f77b90ddd463863bJordan Rose const CallEvent *Call) { 20635bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 20766c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 208c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 209c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2108bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 211dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 212dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 213dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 214dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 215e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 21630726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 217ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 218ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 219ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 220ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 22166c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmtIdx = StmtIdx; 22266c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = Ctx; 223ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2249c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2253c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2263c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2273c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 228fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessStmt(const_cast<Stmt*>(E.castAs<CFGStmt>().getStmt()), Pred); 2293c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 231fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessInitializer(E.castAs<CFGInitializer>().getInitializer(), Pred); 2323c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2333c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2343c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2353c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2363c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 237fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessImplicitDtor(E.castAs<CFGImplicitDtor>(), Pred); 2383c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2399c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 24066c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 2419c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2429c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 243ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 244ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 245ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 246ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 249255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if (AMgr.options.AnalysisPurgeOpt == PurgeNone) 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 252ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2539e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 254ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 255ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 256ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 257ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 258ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 259ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 260ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 2616062334cc388bce69fb3978c4ecb26c6485a5c2bJordan Rose if (CallEvent::isCallStmt(S.getStmt())) 262ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 263ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 264ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 265ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 266ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 267ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 268ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 269ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 2700b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 2710b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 27284c484545c5906ba55143e212b4a5275ab55889fJordan Rose const LocationContext *LC, 2730b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 2740b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 2750b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 27684c484545c5906ba55143e212b4a5275ab55889fJordan Rose ReferenceStmt == 0 || isa<ReturnStmt>(ReferenceStmt)) 2778501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks && "PostStmt is not generally supported by the SymbolReaper yet"); 27884c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(LC && "Must pass the current (or expiring) LocationContext"); 27984c484545c5906ba55143e212b4a5275ab55889fJordan Rose 28084c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!DiagnosticStmt) { 28184c484545c5906ba55143e212b4a5275ab55889fJordan Rose DiagnosticStmt = ReferenceStmt; 28284c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(DiagnosticStmt && "Required for clearing a LocationContext"); 28384c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 28484c484545c5906ba55143e212b4a5275ab55889fJordan Rose 2850b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 2869428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose ProgramStateRef CleanedState = Pred->getState(); 28784c484545c5906ba55143e212b4a5275ab55889fJordan Rose 28884c484545c5906ba55143e212b4a5275ab55889fJordan Rose // LC is the location context being destroyed, but SymbolReaper wants a 28984c484545c5906ba55143e212b4a5275ab55889fJordan Rose // location context that is still live. (If this is the top-level stack 29084c484545c5906ba55143e212b4a5275ab55889fJordan Rose // frame, this will be null.) 29184c484545c5906ba55143e212b4a5275ab55889fJordan Rose if (!ReferenceStmt) { 29284c484545c5906ba55143e212b4a5275ab55889fJordan Rose assert(K == ProgramPoint::PostStmtPurgeDeadSymbolsKind && 29384c484545c5906ba55143e212b4a5275ab55889fJordan Rose "Use PostStmtPurgeDeadSymbolsKind for clearing a LocationContext"); 29484c484545c5906ba55143e212b4a5275ab55889fJordan Rose LC = LC->getParent(); 29584c484545c5906ba55143e212b4a5275ab55889fJordan Rose } 29684c484545c5906ba55143e212b4a5275ab55889fJordan Rose 29784c484545c5906ba55143e212b4a5275ab55889fJordan Rose const StackFrameContext *SFC = LC ? LC->getCurrentStackFrame() : 0; 29884c484545c5906ba55143e212b4a5275ab55889fJordan Rose SymbolReaper SymReaper(SFC, ReferenceStmt, SymMgr, getStoreManager()); 2990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 3010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 3030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 3040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 3050b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 306241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 30777d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 308f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 309f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 31466c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Out, *currBldrCtx); 315fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, &cleanupTag, K); 3161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3176bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3186bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3196bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 320fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 3210b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 3220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 323183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 324fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 325fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 326fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 32766c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(CheckedSet, Out, *currBldrCtx); 328fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 329fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3316bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3326bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3336bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3356bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3386bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3406bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3426bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3436bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3446bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3458bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3466bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 347fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, &cleanupTag, K); 3486bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 34977d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3500b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3510b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3520b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3530b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3540b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3550b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 3560b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3579428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose const Stmt *currStmt = S.getStmt(); 3580b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 35966c486f275531df6362b3511fc3af6563561801bTed Kremenek currStmt->getLocStart(), 3600b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 3630b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 3649428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose if (shouldRemoveDeadBindings(AMgr, S, Pred, Pred->getLocationContext())){ 3659428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose removeDead(Pred, CleanedStates, currStmt, Pred->getLocationContext()); 3660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 3679428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose CleanedStates.Add(Pred); 3680b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3690b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 370dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 3710b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 3720b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 373dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 37566c486f275531df6362b3511fc3af6563561801bTed Kremenek Visit(currStmt, *I, DstI); 376dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 377ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 378ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 379dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 38066c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 381e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 382e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 383d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 384056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 385cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 386563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 387563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 388563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose BMI->getSourceLocation(), 389563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose "Error evaluating initializer"); 390563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 3919428723d6730f4fd257e15b78d24991ae95bbd84Jordan Rose // We don't clean up dead bindings here. 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 394056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 395056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 3963682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 3973682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ProgramStateRef State = Pred->getState(); 3983a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal thisVal = State->getSVal(svalBuilder.getCXXThis(decl, stackFrame)); 3999dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 4003682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostInitializer PP(BMI, stackFrame); 4013682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Tmp(Pred); 4023682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4033a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Evaluate the initializer, if necessary 40400eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 4053a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Constructors build the object directly in the field, 4063a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // but non-objects must be copied in from the initializer. 40707c52d2813a6b5e4025276d3687bd25f75fd51b9Jordan Rose const Expr *Init = BMI->getInit()->IgnoreImplicit(); 4083682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!isa<CXXConstructExpr>(Init)) { 4093a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal FieldLoc; 4103a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose if (BMI->isIndirectMemberInitializer()) 4113a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getIndirectMember(), thisVal); 4123a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose else 4133a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getMember(), thisVal); 4143a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 4153a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal InitVal = State->getSVal(BMI->getInit(), stackFrame); 4163682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 4173682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Tmp.clear(); 4183682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose evalBind(Tmp, Init, Pred, FieldLoc, InitVal, /*isInit=*/true, &PP); 4193a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose } 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 421563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose assert(BMI->isBaseInitializer() || BMI->isDelegatingInitializer()); 422888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // We already did all the work when visiting the CXXConstructExpr. 423056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 424dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 4253682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose // Construct PostInitializer nodes whether the state changed or not, 4263a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // so that the diagnostics don't get confused. 4273682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNodeSet Dst; 4283682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose NodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 4293682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose for (ExplodedNodeSet::iterator I = Tmp.begin(), E = Tmp.end(); I != E; ++I) { 4303682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose ExplodedNode *N = *I; 4313682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose Bldr.generateNode(PP, N->getState(), N); 4323682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose } 4333a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 434dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 43566c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 4369c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4379c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 438d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 439ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 440ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4413c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4424ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 443fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessAutomaticObjDtor(D.castAs<CFGAutomaticObjDtor>(), Pred, Dst); 4444ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4454ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 446fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessBaseDtor(D.castAs<CFGBaseDtor>(), Pred, Dst); 4474ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4484ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 449fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessMemberDtor(D.castAs<CFGMemberDtor>(), Pred, Dst); 4504ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4514ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 452fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie ProcessTemporaryDtor(D.castAs<CFGTemporaryDtor>(), Pred, Dst); 4534ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4544ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4554ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4564ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 457ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 458dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 45966c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.enqueue(Dst, currBldrCtx->getBlock(), currStmtIdx); 4604ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4614ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 462056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 463056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 464056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4658bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 466056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4672210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4682210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4692210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4702210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4712210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4722210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 473056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 474b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4755251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie VisitCXXDestructor(varType, dest.castAs<loc::MemRegionVal>().getRegion(), 4765251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie Dtor.getTriggerStmt(), /*IsBase=*/ false, Pred, Dst); 4774ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4784ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 479d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 480888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 481888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 482888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ProgramStateRef State = Pred->getState(); 483888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 484888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 485888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose Loc ThisPtr = getSValBuilder().getCXXThis(CurDtor, 486888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose LCtx->getCurrentStackFrame()); 487888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal ThisVal = Pred->getState()->getSVal(ThisPtr); 488888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 489888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // Create the base object region. 4904411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose const CXXBaseSpecifier *Base = D.getBaseSpecifier(); 4914411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose QualType BaseTy = Base->getType(); 4924411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose SVal BaseVal = getStoreManager().evalDerivedToBase(ThisVal, BaseTy, 4934411b423e91da0a2c879b70c0222aeba35f72044Jordan Rose Base->isVirtual()); 494888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 4955251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie VisitCXXDestructor(BaseTy, BaseVal.castAs<loc::MemRegionVal>().getRegion(), 4965251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie CurDtor->getBody(), /*IsBase=*/ true, Pred, Dst); 497888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose} 4984ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 499d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 5003a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 5013a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const FieldDecl *Member = D.getFieldDecl(); 5023a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 5033a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 5043a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5053a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 5063a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Loc ThisVal = getSValBuilder().getCXXThis(CurDtor, 5073a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose LCtx->getCurrentStackFrame()); 5085251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie SVal FieldVal = 5095251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie State->getLValue(Member, State->getSVal(ThisVal).castAs<Loc>()); 5103a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5113a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose VisitCXXDestructor(Member->getType(), 5125251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie FieldVal.castAs<loc::MemRegionVal>().getRegion(), 513200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose CurDtor->getBody(), /*IsBase=*/false, Pred, Dst); 5143a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose} 5154ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 516d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 517056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 518056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 5199c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 52048b6247804eacc262cc5508e0fbb74ed819fbb6eJordan Rosevoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 5216889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 5220bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 5230bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 5240bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 5256889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 52666c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, DstTop, *currBldrCtx); 5270bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 528e9cd031c77a92015571425b6445e8867816997cdJordan Rose assert(!isa<Expr>(S) || S == cast<Expr>(S)->IgnoreParens()); 5291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 530e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 531f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 532f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5341b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5351b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5379be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 538c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 5391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5401b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5416ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5424ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 54321ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 544552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 546c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5476b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 548be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 549c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 5509a4db032ecd991626d236a502e770126db32bd31Richard Smith case Stmt::FunctionParmPackExprClass: 55128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 55228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 55301d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 554ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 555fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose const ExplodedNode *node = Bldr.generateSink(S, Pred, Pred->getState()); 55666c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.addAbortedBlock(node, currBldrCtx->getBlock()); 557c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 558c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5595fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 560f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 561f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 562f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 563f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5671b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 57046eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5721b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 573d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5741b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 575d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5761b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5771b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 578534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5791b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5801b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 581d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 582d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 583ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5851b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5864ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCSubscriptRefExprClass: 5874ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCPropertyRefExprClass: 5884ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose llvm_unreachable("These are handled by PseudoObjectExpr"); 5894ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose 5908ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5918f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5935eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5945eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 595ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5968ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5978ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5988ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5994beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 600ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 6014beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 602ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6034beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 6044beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 605ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 606e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 607f85e193739c953358c865005855253af4f68a497John McCall break; 608f85e193739c953358c865005855253af4f68a497John McCall 6091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 6121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 6131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 6141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 616f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 6171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 6181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 6191b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6201b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 6211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6221b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6231b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6241b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 625e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 62656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 62761eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 628276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 629337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 633bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 634bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 635bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 636c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 637c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 638477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 640bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 641f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 642e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 643e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 644cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 64569a0e5021c5c49a34aa25cd89b1e613a52097e65Jordan Rose case Stmt::SubstNonTypeTemplateParmExprClass: 646bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 647bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 648bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 649bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 650bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 651bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 652e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 653bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 65538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose case Stmt::CXXDefaultArgExprClass: { 65638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.takeNodes(Pred); 65738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet PreVisit; 65838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 65938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 66038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ExplodedNodeSet Tmp; 66138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose StmtNodeBuilder Bldr2(PreVisit, Tmp, *currBldrCtx); 66238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 66338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 66438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose const Expr *ArgE = cast<CXXDefaultArgExpr>(S)->getExpr(); 66538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 66638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose // Avoid creating and destroying a lot of APSInts. 66738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose SVal V; 66838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose llvm::APSInt Result; 66938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 67038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose for (ExplodedNodeSet::iterator I = PreVisit.begin(), E = PreVisit.end(); 67138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose I != E; ++I) { 67238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose ProgramStateRef State = (*I)->getState(); 67338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 67438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose if (ArgE->EvaluateAsInt(Result, getContext())) 67538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose V = svalBuilder.makeIntVal(Result); 67638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose else 67738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose V = State->getSVal(ArgE, LCtx); 67838f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 67938f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose State = State->BindExpr(S, LCtx, V); 68038f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr2.generateNode(S, *I, State); 68138f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 68238f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 68338f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 68438f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose Bldr.addNodes(Dst); 68538f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose break; 68638f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose } 68738f68ef19cb51d5876e9025b5fceb44b33ec9ed7Jordan Rose 6881a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 68970fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 69070fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 69170fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 69270fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 6931a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6941a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6951a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6961a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6971a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6981a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 69966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currBldrCtx); 7001a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 70170fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 70270fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 70370fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 7041a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 7051a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 7061a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 7071a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 7083b1df8bb941a18c4a7256d7cfcbccb9de7e39995Ted Kremenek SVal result = svalBuilder.conjureSymbolVal(0, Ex, LCtx, resultType, 70966c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx->blockCount()); 7101a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 7111a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 7121a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 7131a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 7141a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 7151a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 7161a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 7171a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 7181a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 719540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 720ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 721892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 722ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 723540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 7241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 725df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier case Stmt::GCCAsmStmtClass: 726ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 727df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier VisitGCCAsmStmt(cast<GCCAsmStmt>(S), Pred, Dst); 728ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 729e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 730b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 7318cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 7328cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 7338cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 7348cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 7358cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 7368cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 737c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 738ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 739c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 741c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 742c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 743e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 74403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 745e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 746ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 747e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 749e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 750e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7512de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 7528bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 753ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 7545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 7555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 7565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 757e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 758e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 75906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 760ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 761ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 7620caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && 763bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 764031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 765892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7660caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, cast<Expr>(S)); 76748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 76848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 769892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 77048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 771ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 772e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 773e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 77406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 775f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose case Stmt::CXXOperatorCallExprClass: { 776f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const CXXOperatorCallExpr *OCE = cast<CXXOperatorCallExpr>(S); 777f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 778f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // For instance method operators, make sure the 'this' argument has a 779f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // valid region. 780f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const Decl *Callee = OCE->getCalleeDecl(); 781f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(Callee)) { 782f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) { 783f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef State = Pred->getState(); 784f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 785f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef NewState = 786f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose createTemporaryRegionIfNeeded(State, LCtx, OCE->getArg(0)); 787f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (NewState != State) 788f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Pred = Bldr.generateNode(OCE, Pred, NewState, /*Tag=*/0, 789f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramPoint::PreStmtKind); 790f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 791f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 792f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // FALLTHROUGH 793f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 794b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 7959fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7969fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 797ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 798b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 799ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 80006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 801e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 802337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 803337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 804337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 805337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 806337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 807337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 808337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 80906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 810744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 811888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose case Stmt::CXXConstructExprClass: { 812ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 813888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXConstructExpr(cast<CXXConstructExpr>(S), Pred, Dst); 814ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8157ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 8167ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 8177ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 818d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXNewExprClass: { 819d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 820d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PostVisit; 821d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXNewExpr(cast<CXXNewExpr>(S), Pred, PostVisit); 822d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPostStmt(Dst, PostVisit, S, *this); 823d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 824d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 825d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 826d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 827d74324371465a152387ac45e737ab7d23e543552Anton Yartsev case Stmt::CXXDeleteExprClass: { 828d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.takeNodes(Pred); 829d74324371465a152387ac45e737ab7d23e543552Anton Yartsev ExplodedNodeSet PreVisit; 830d74324371465a152387ac45e737ab7d23e543552Anton Yartsev const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 831d74324371465a152387ac45e737ab7d23e543552Anton Yartsev getCheckerManager().runCheckersForPreStmt(PreVisit, Pred, S, *this); 832d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 833d74324371465a152387ac45e737ab7d23e543552Anton Yartsev for (ExplodedNodeSet::iterator i = PreVisit.begin(), 834d74324371465a152387ac45e737ab7d23e543552Anton Yartsev e = PreVisit.end(); i != e ; ++i) 835d74324371465a152387ac45e737ab7d23e543552Anton Yartsev VisitCXXDeleteExpr(CDE, *i, Dst); 836d74324371465a152387ac45e737ab7d23e543552Anton Yartsev 837d74324371465a152387ac45e737ab7d23e543552Anton Yartsev Bldr.addNodes(Dst); 838d74324371465a152387ac45e737ab7d23e543552Anton Yartsev break; 839d74324371465a152387ac45e737ab7d23e543552Anton Yartsev } 840e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 841e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 8421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 843e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 844ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8459c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 846e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 847ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 848e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 849e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 851e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 852ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 853892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 854ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 855e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 856f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 857f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 858ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 859892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 860ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 861f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 8621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 864e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 865ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 86656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 86756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 86856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 869ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 870e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 871e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 873bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 874ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 875bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 876ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 877bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 878bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 879892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 880ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 881892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 882892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 883ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 884e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 885892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 887e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 888ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 889e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 890ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 891e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8930835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8940d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8950d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8960d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8970d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8980d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 899f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 900f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 901ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9029c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 903f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 904f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 905f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 906f85e193739c953358c865005855253af4f68a497John McCall 907f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 908f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 909f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 910f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 911f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 912f85e193739c953358c865005855253af4f68a497John McCall } 913f85e193739c953358c865005855253af4f68a497John McCall 914f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 915f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 916ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 917e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 918e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 919b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 92003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 921ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 922c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose const MaterializeTemporaryExpr *MTE = cast<MaterializeTemporaryExpr>(S); 923c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose CreateCXXTemporaryObject(MTE, Pred, Dst); 924ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 92503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 92603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 92703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 928c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 929ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 930c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 931ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 932c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 9331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 93497ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 935ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 936892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 937ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 938469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 939ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 94097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 941ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 942892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 943ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 94497ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 945af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 946af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 947ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 948af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 949ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 950af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 952d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose case Stmt::ObjCMessageExprClass: 953ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 954d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 955ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 956e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 958c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::ObjCAtThrowStmtClass: 959c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::CXXThrowExprClass: 960bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 961bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 962fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateSink(S, Pred, Pred->getState()); 963bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 9641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9651b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 966ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9671b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 968ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9691b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9718ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 972ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 974ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9758ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9768ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 977f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 978ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 979f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 980f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 981ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 982e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 984e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 986a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 987a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 988a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 989a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 990a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 991a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 992a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9949c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9958bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 996ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 1000a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 1001e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 1002e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 10036987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 100472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 1005ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 100603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 10070caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && (U->getOpcode() == UO_LNot)) { 1008031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1009892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 10100caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, U); 101172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 101272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 1013892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 1014ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 10151b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 101672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 10174b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10184b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 10194b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 10208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 10214b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 10224b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 10235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 10245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 10255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 10264b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10274b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 10285eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 10295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 10305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 10314b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10324b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 10334b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 10344b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10351b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 10361b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 10371b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 10395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 10405903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10415903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 10425903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 10435903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 104428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose const Stmt *CE = CalleeSF->getCallSite(); 10455903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10465903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 10475903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 10485903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 10495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 10505903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 10515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 10535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 10545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 105628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // processing the call. 10570b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 10585903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 105928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (isa<PreImplicitCall>(&L)) 106028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose continue; 1061852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose if (isa<CallEnter>(&L)) 1062852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose continue; 10635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 106428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SP->getStmt() == CE) 10655903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10675903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10685903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1069253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10705903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10715903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10725903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10735903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10745903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 107528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // Note that CE is permitted to be NULL! 10765903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10775903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 108116303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState = 108216303fcc569ea149dc2de38ff9e367d2d4831ceeDavid Greene NewNodeState->set<ReplayWithoutInlining>(const_cast<Stmt *>(CE)); 10835903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1087253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1088253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1089253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1090253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1091253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 11005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1101c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1102253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1103b355be838a22a511d078504b2277f70aea52ca85Anna Zaks NodeBuilderWithSinks &nodeBuilder, 1104b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 110527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 110627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 11072fa9d72d4d23ccdcd4137946e5ebafac7a04f04cTed Kremenek if (nodeBuilder.getContext().blockCount() >= AMgr.options.maxBlockVisitOnPath) { 1108ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1109253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1110b355be838a22a511d078504b2277f70aea52ca85Anna Zaks nodeBuilder.generateSink(Pred->getState(), Pred, &tag); 1111749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1112749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1113749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 1114b355be838a22a511d078504b2277f70aea52ca85Anna Zaks const LocationContext *CalleeLC = Pred->getLocation().getLocationContext(); 11153bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 11165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 11175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 11183bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1119e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 11203bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 11215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 11225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 11235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 11245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1125255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if ((!AMgr.options.NoRetryExhausted && 1126b355be838a22a511d078504b2277f70aea52ca85Anna Zaks replayWithoutInlining(Pred, CalleeLC))) 1127253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1128253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 11295903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1130749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1131253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1132253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1133253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 113427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1135e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1136e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1137e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1138e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1139e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1140e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 11416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1146294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11478bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1148294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1150294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11516ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 115203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11726ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11756ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11766ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11776ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11786ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11805eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11816ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11826ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11833f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenekstatic const Stmt *ResolveCondition(const Stmt *Condition, 11843f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const CFGBlock *B) { 11853f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 11863f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 11873f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11883f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const BinaryOperator *BO = dyn_cast<BinaryOperator>(Condition); 11893f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 11903f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11913f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11923f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // For logical operations, we still have the case where some branches 11933f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // use the traditional "merge" approach and others sink the branch 11943f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // directly into the basic blocks representing the logical operation. 11953f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // We need to distinguish between those two cases here. 11963f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11973f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // The invariants are still shifting, but it is possible that the 11983f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // last element in a CFGBlock is not a CFGStmt. Look for the last 11993f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // CFGStmt as the value of the condition. 12003f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend(); 12013f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek for (; I != E; ++I) { 12023f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGElement Elem = *I; 1203fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGStmt CS = Elem.getAs<CFGStmt>(); 12043f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!CS) 12053f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek continue; 1206fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie if (CS.getStmt() != Condition) 12073f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek break; 12083f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12093f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 12103f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12113f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek assert(I != E); 12123f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12133f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek while (Condition) { 12143f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek BO = dyn_cast<BinaryOperator>(Condition); 12153f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 12163f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 12173f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = BO->getRHS()->IgnoreParens(); 12183f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 12193f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek llvm_unreachable("could not resolve condition"); 12203f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek} 12213f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12229c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1223a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1224ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 12251aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1226a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1227a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 122866c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = &BldCtx; 1229f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1230b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 12311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 12321aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1233a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 12344e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1235b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1236b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 12371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12383f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12393f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // Resolve the condition in the precense of nested '||' and '&&'. 12403f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 12413f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 12423f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12433f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = ResolveCondition(Condition, BldCtx.getBlock()); 124421028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 124521028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 124621028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 12470fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1248f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1249f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 12504e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 12518ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1252f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 12538ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1255f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1256f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1257f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1258cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1260cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1261cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1262cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 126312b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks ProgramStateRef PrevState = PredI->getState(); 126412b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks SVal X = PrevState->getSVal(Condition, PredI->getLocationContext()); 1265cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1266cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1267cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1268cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1269cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1270cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1271cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1272cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1273cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1274cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1275cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 127612b3e3199c530b72f3cc44dd24a1e20ed6086292Anna Zaks PredI->getLocationContext(), 1277cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1278cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1279cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1280cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1281cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12820835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1283b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12840835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12855eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12860835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 128773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 1288829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, true, PredI); 1289829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, false, PredI); 1290cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12935251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedSVal V = X.castAs<DefinedSVal>(); 12940835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 12956960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StTrue, StFalse; 12966960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StTrue, StFalse) = PrevState->assume(V); 12976960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 1298cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1299cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 13006960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StTrue) 13016960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StTrue, true, PredI); 1302cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1303cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1304cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 13051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1306cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1307cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 13086960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StFalse) 13096960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StFalse, false, PredI); 1310cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1311cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1312cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1313cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 131466c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 1315f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1316f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1317e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1318754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1319ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1320754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13218bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 13231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1324754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1325754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1326754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 13274a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1328754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1329754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 13301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1331d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1332754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 1333dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::GotoLabel> LV = V.getAs<loc::GotoLabel>()) { 13345251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie const LabelDecl *L = LV->getLabel(); 13351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1336ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 133724f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1338a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1339754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1340754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1341754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1343b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1344754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1345754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13465251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (V.getAs<loc::ConcreteInt>() || V.getAs<UndefinedVal>()) { 1347754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 13482055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 13492055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 13502055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1351754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1352754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1354754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1355b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1357754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1358a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1359754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1360f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1361d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 136273099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1363b355be838a22a511d078504b2277f70aea52ca85Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC, 1364b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 1365b355be838a22a511d078504b2277f70aea52ca85Anna Zaks StateMgr.EndPath(Pred->getState()); 13668501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 1367af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 13688501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks if (Pred->getLocationContext()->inTopFrame()) { 13698501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Remove dead symbols. 13708501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks ExplodedNodeSet AfterRemovedDead; 13718501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks removeDeadOnEndOfFunction(BC, Pred, AfterRemovedDead); 13728501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 13738501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Notify checkers. 13748501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks for (ExplodedNodeSet::iterator I = AfterRemovedDead.begin(), 13758501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks E = AfterRemovedDead.end(); I != E; ++I) { 1376344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, *I, *this); 13778501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 13788501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } else { 1379344c77aac25e5d960aced3f45fbaa09853383f6dAnna Zaks getCheckerManager().runCheckersForEndFunction(BC, Dst, Pred, *this); 13808501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 13818501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 13824d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 138373099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 138473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1385d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1386daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1387e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1388d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13898bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13909c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13915eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1392daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13935b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13942055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1395b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13962055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13972055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1398daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1399daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14005251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie DefinedOrUnknownSVal CondV = CondV_untested.castAs<DefinedOrUnknownSVal>(); 1401692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 14028bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 140334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 140434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 140534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 14061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140734feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1408e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1409e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1410e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1411e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 14129c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 141372afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 141472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 141585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 141685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 14171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1418daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 141985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 142085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 142185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 142214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 142314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 14241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1425daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1426daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1427aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 14281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 142914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 143085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 14319c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 143248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1433b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 14358bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1436a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 14371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1438daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1439daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1440daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 14415251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (CondV.getAs<nonloc::ConcreteInt>()) 1442daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1443daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1445daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1446daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 144748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 14488bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 144948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 145048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 145148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 145248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 145348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 145448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 145548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 14565014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1457b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 145814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 145985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 146014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 14611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 146385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 14641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1466daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14684d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14694d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14704d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14714d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14724d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14734d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14744d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14754d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14764d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14774d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14784d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14794d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14804d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14814d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14824d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14834d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14844d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14854d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1486daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1487daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1488e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1489ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1490e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1491d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1492d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1493d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1494d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 149566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1496ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14978bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14996d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 15009c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1501591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1502d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1503a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1504892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1505892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1506892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1507892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1508892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1509892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1510892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1511852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 15126d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1513fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1514ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1515852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1516892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 15179c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1518591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1519c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 15205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 15216d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1522892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 15239c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1524c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1525fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1526ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 15276d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 15281b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 15295aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 1530fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose // FIXME: Compute lvalue of field pointers-to-member. 15310156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // Right now we just use a non-null void pointer, so that it gives proper 15320156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // results in boolean contexts. 15330156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose SVal V = svalBuilder.conjureSymbolVal(Ex, LCtx, getContext().VoidPtrTy, 15340156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose currBldrCtx->blockCount()); 15355251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->assume(V.castAs<DefinedOrUnknownSVal>(), true); 15360156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1537fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 15385aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 15395aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 15405aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 1541fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose llvm_unreachable("Support for this Decl not implemented."); 15423271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 15433271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1544540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 15459c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 15469c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15479c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 15481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15499c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 15509c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1551892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 15521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15538f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 15548f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 15558f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 155666c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currBldrCtx); 1557ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15588f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 15598f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 15605eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 15618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 15625eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 15635eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 15645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1565591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 1566fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 0, 1567fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 15681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1569540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1570540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1571469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15729c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15736889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 157566c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, TopDst, *currBldrCtx); 15766889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 1577603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose ValueDecl *Member = M->getMemberDecl(); 157810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1579603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // Handle static member variables and enum constants accessed via 1580603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // member syntax. 1581603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (isa<VarDecl>(Member) || isa<EnumConstantDecl>(Member)) { 1582ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1583603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose VisitCommonDeclRefExpr(M, Member, Pred, Dst); 1584ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15855bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15865bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 158710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1588f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef state = Pred->getState(); 1589f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 1590f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Expr *BaseExpr = M->getBase(); 1591f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 159210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 1593603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(Member)) { 1594f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) 1595f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 159610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1597f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal MDVal = svalBuilder.getFunctionPointer(MD); 1598f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = state->BindExpr(M, LCtx, MDVal); 159920aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1600f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Bldr.generateNode(M, Pred, state); 1601ce6644bc1e921833f9b3c10cf7d4a0b78e8d5dc9Jordan Rose return; 160220aa40342bd74895128860c081aa84cd85bfa68dJordan Rose } 160320aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1604f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // Handle regular struct fields / member variables. 1605f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 1606f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal baseExprVal = state->getSVal(BaseExpr, LCtx); 1607d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose 1608603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose FieldDecl *field = cast<FieldDecl>(Member); 1609e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 16106b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (M->isGLValue()) { 16116b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (field->getType()->isReferenceType()) { 1612d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose if (const MemRegion *R = L.getAsRegion()) 1613d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose L = state->getSVal(R); 1614d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose else 16156b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = UnknownVal(); 16166b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } 16176b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose 1618d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), 0, 1619d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose ProgramPoint::PostLValueKind); 16206b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } else { 1621ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1622bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1623ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1624ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1625469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1626469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 1627bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksnamespace { 1628bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaksclass CollectReachableSymbolsCallback : public SymbolVisitor { 1629bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols Symbols; 1630bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zakspublic: 1631bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback(ProgramStateRef State) {} 1632bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &getSymbols() const { return Symbols; } 1633bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1634bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool VisitSymbol(SymbolRef Sym) { 1635bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Symbols.insert(Sym); 1636bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return true; 1637bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1638bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks}; 1639bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} // end anonymous namespace 1640bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 16411655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// A value escapes in three possible cases: 16421655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (1) We are binding to something that is not a memory region. 16431655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (2) We are binding to a MemrRegion that does not have stack storage. 16441655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// (3) We are binding to a MemRegion with stack storage that the store 16451655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks// does not understand. 1646bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef ExprEngine::processPointerEscapedOnBind(ProgramStateRef State, 16471655bcd052a67a3050fc55df8ecce57342352e68Anna Zaks SVal Loc, SVal Val) { 1648bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Are we storing to something that causes the value to "escape"? 1649bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks bool escapes = true; 1650bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1651bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // TODO: Move to StoreManager. 1652dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> regionLoc = Loc.getAs<loc::MemRegionVal>()) { 1653bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = !regionLoc->getRegion()->hasStackStorage(); 1654bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1655bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) { 1656bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // To test (3), generate a new state with the binding added. If it is 1657bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the same state, then it escapes (since the store cannot represent 1658bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // the binding). 1659bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Do this only if we know that the store is not supposed to generate the 1660bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // same state. 1661bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SVal StoredVal = State->getSVal(regionLoc->getRegion()); 1662bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (StoredVal != Val) 1663bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks escapes = (State == (State->bindLoc(*regionLoc, Val))); 1664bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1665b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks if (!escapes) { 1666b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // Case 4: We do not currently model what happens when a symbol is 1667b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // assigned to a struct field, so be conservative here and let the symbol 1668b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks // go. TODO: This could definitely be improved upon. 1669b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks escapes = !isa<VarRegion>(regionLoc->getRegion()); 1670b98c6fe8877b809d4da3020692c9b38f972b92cfAnna Zaks } 1671bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1672bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1673bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If our store can represent the binding and we aren't storing to something 1674bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // that doesn't have local storage then just return and have the simulation 1675bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // state continue as is. 1676bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!escapes) 1677bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1678bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1679bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Otherwise, find all symbols referenced by 'val' that we are tracking 1680bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // and stop tracking them. 1681bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks CollectReachableSymbolsCallback Scanner = 1682bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State->scanReachableSymbols<CollectReachableSymbolsCallback>(Val); 1683bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols &EscapedSymbols = Scanner.getSymbols(); 1684bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1685bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks EscapedSymbols, 1686233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks /*CallEvent*/ 0, 1687233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks PSK_EscapeOnBind); 1688bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1689bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1690bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1691bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1692bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksProgramStateRef 1693bf53dfac8195835028bd6347433f7dbebcc29fc1Anna ZaksExprEngine::processPointerEscapedOnInvalidateRegions(ProgramStateRef State, 1694bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const InvalidatedSymbols *Invalidated, 1695bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> ExplicitRegions, 1696bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ArrayRef<const MemRegion *> Regions, 1697bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const CallEvent *Call) { 1698bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1699bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Invalidated || Invalidated->empty()) 1700bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1701bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1702bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!Call) 1703bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return getCheckerManager().runCheckersForPointerEscape(State, 1704233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks *Invalidated, 1705233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks 0, 1706233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks PSK_EscapeOther); 1707bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1708bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // If the symbols were invalidated by a call, we want to find out which ones 1709bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // were invalidated directly due to being arguments to the call. 1710bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsDirectlyInvalidated; 1711bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (ArrayRef<const MemRegion *>::iterator I = ExplicitRegions.begin(), 1712bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = ExplicitRegions.end(); I != E; ++I) { 1713bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (const SymbolicRegion *R = (*I)->StripCasts()->getAs<SymbolicRegion>()) 1714bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsDirectlyInvalidated.insert(R->getSymbol()); 1715bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1716bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1717bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks InvalidatedSymbols SymbolsIndirectlyInvalidated; 1718bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks for (InvalidatedSymbols::const_iterator I=Invalidated->begin(), 1719bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks E = Invalidated->end(); I!=E; ++I) { 1720bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolRef sym = *I; 1721bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (SymbolsDirectlyInvalidated.count(sym)) 1722bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks continue; 1723bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks SymbolsIndirectlyInvalidated.insert(sym); 1724bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks } 1725bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1726bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsDirectlyInvalidated.empty()) 1727bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1728233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsDirectlyInvalidated, Call, PSK_DirectEscapeOnCall); 1729bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1730bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks // Notify about the symbols that get indirectly invalidated by the call. 1731bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks if (!SymbolsIndirectlyInvalidated.empty()) 1732bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks State = getCheckerManager().runCheckersForPointerEscape(State, 1733233e26acc0ff2a1098f4c813f69286fce840a422Anna Zaks SymbolsIndirectlyInvalidated, Call, PSK_IndirectEscapeOnCall); 1734bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1735bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks return State; 1736bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks} 1737bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 17389c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 17399c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 17409c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 174193bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 174232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek SVal location, SVal Val, 17433682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose bool atDeclInit, const ProgramPoint *PP) { 17443682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 17453682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose const LocationContext *LC = Pred->getLocationContext(); 17463682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostStmt PS(StoreE, LC); 17473682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!PP) 17483682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PP = &PS; 1749b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1750b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1751fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1752fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 17533682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose StoreE, *this, *PP); 1754b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1755bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 1756bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Dst, *currBldrCtx); 1757bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 175832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // If the location is not a 'Loc', it will already be handled by 175932a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // the checkers. There is nothing left to do. 17605251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie if (!location.getAs<Loc>()) { 1761bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, /*Loc*/0, /*tag*/0); 1762bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks ProgramStateRef state = Pred->getState(); 1763bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1764bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks Bldr.generateNode(L, state, Pred); 176532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek return; 176632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 176732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 17686b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1769b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1770b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 17713d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 17723d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 177332a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 1774bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks state = processPointerEscapedOnBind(state, location, Val); 1775bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 177632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // When binding the value, pass on the hint that this is a initialization. 177732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // For initializations, we do not need to inform clients of region 177832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // changes. 17795251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(location.castAs<Loc>(), 178032a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek Val, /* notifyChanges = */ !atDeclInit); 1781bf53dfac8195835028bd6347433f7dbebcc29fc1Anna Zaks 17823d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 1783dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<loc::MemRegionVal> LocRegVal = 17845251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie location.getAs<loc::MemRegionVal>()) { 17853d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 178632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 17873682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 17883d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 1789fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(L, state, PredI); 1790b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1791a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1792a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 17939c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1794a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 17952e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1796e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 17972e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1798a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1799a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1800a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 18019c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 18029c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 18039c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 18048bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1805ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 180614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 180714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 180814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 180914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 18101b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1811b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1812bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1814b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 18151b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1816b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 181773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 181873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1819a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1820b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 18213d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 18221b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 18231b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1824bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1825bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1826bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1827bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1828bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1829bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1830bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1831bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1832bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 18335251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert(!location.getAs<NonLoc>() && "location cannot be a NonLoc."); 183414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 18355b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1836852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1837852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 18389697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 18399697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1840b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1841018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1842852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1843ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1844ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1845852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1846bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1847bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1848852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1849852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1850852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1851852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1852db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1853bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1854bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1855b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1856852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1857852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1858852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1859b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1860bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1861852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1862852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1863bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1864bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1865bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1866bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1867bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1868bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1869bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1870bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1871bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1872bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 18731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1874b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1875bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1876b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 18771b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1878b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 187966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 188073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 188173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1882b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 18831b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1884b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1885db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 18865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 188796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 18887affe151f5689b2d3547b8947c4099532c78a021Jordan Rose SVal V = UnknownVal(); 18897affe151f5689b2d3547b8947c4099532c78a021Jordan Rose if (location.isValid()) { 189096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1891bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 18925251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie V = state->getSVal(location.castAs<Loc>(), LoadTy); 1893b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 18947affe151f5689b2d3547b8947c4099532c78a021Jordan Rose 18957affe151f5689b2d3547b8947c4099532c78a021Jordan Rose Bldr.generateNode(NodeEx, *NI, state->BindExpr(BoundEx, LCtx, V), tag, 18967affe151f5689b2d3547b8947c4099532c78a021Jordan Rose ProgramPoint::PostLoadKind); 1897d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 18981b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 18991b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1900bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1901bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1902bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1903bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1904bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1905bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1906bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1907bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 190866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder BldrTop(Pred, Dst, *currBldrCtx); 190900b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1910769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1911b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1912b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1913b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 19149c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1915ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 191666c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Src, *currBldrCtx); 1917ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1918eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1919eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1920eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1921eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1922eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1923eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1924eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1925eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1926ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1927fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose static SimpleProgramPointTag tag("ExprEngine: Location"); 1928fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(NodeEx, Pred, state, &tag); 19290296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1930ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1931bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1932bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1933ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1934ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1935ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 19366c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 19370caa2d47b84337e942b3f6652adfafe4ae506cfeTed KremenekExprEngine::geteagerlyAssumeBinOpBifurcationTags() { 19386c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 19390caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationTrue("ExprEngine : Eagerly Assume True"), 19400caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationFalse("ExprEngine : Eagerly Assume False"); 19410caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek return std::make_pair(&eagerlyAssumeBinOpBifurcationTrue, 19420caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek &eagerlyAssumeBinOpBifurcationFalse); 19436c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 19446c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 19450caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenekvoid ExprEngine::evalEagerlyAssumeBinOpBifurcation(ExplodedNodeSet &Dst, 19460caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek ExplodedNodeSet &Src, 19470caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek const Expr *Ex) { 194866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Src, Dst, *currBldrCtx); 194986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1950031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1951031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1952b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1953b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1954b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 19551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1956b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1957b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 19581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1959b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 19608bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 19615eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 1962dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie Optional<nonloc::SymbolVal> SEV = V.getAs<nonloc::SymbolVal>(); 19635344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 19646c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 19650caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek geteagerlyAssumeBinOpBifurcationTags(); 19666c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 19676960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StateTrue, StateFalse; 19686960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StateTrue, StateFalse) = state->assume(*SEV); 19696960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 197048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 19716960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateTrue) { 197286b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 19735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1974fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateTrue, tags.first); 197548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 19761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 197748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 19786960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateFalse) { 197986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 19805eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1981fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateFalse, tags.second); 198248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 198348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 198448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 198548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 198648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 1987df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosiervoid ExprEngine::VisitGCCAsmStmt(const GCCAsmStmt *A, ExplodedNode *Pred, 1988df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier ExplodedNodeSet &Dst) { 198966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1990a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1991a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 19921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1993a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1994a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1995a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 19961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1997a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 19981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1999df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier for (GCCAsmStmt::const_outputs_iterator OI = A->begin_outputs(), 2000a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 2001a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 20025251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie assert (!X.getAs<NonLoc>()); // Should be an Lval, or unknown, undef. 20031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2004dc84cd5efdd3430efb22546b4ac656aa0540b210David Blaikie if (Optional<Loc> LV = X.getAs<Loc>()) 20055251abea41b446c26e3239c8dd6c7edea6fc335dDavid Blaikie state = state->bindLoc(*LV, UnknownVal()); 2006ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 20071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2008a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 2009ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 2010ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 20118cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 20128cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 201366c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 20148cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 20158cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 20168cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 2017094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 2018e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 2019ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 2020ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 2021aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 2022d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 2023e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 20243b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 2025aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 2026aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 202747491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 2028aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 2029006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2030006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 2031006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 2032d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 2033ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 20349c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 20351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 203610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 203710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 203810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 2039a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 20409dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 20414a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 20424a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 20434a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 20445e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 20452ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 20462ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 2047a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 20481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20498cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 20508cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 20512055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 2052a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 2053a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 20541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2055cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko static void printLocation(raw_ostream &Out, SourceLocation SLoc) { 205628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SLoc.isFileID()) { 205728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "\\lline=" 205828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 205928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << " col=" 206028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 206128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << "\\l"; 206228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 206328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 206428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 20659c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 20661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 206753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 206853ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 2069803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 2070803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 2071aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2073aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 20740b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 20751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 2076aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 20770b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 20780b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 20790b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 20800b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 20810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 20820b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 2083aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 20840b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 20851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2086aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 2087aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 2088aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 20891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2090102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 2091102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 2092102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2093102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 20940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 20950b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 20960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 20970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 20980b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 20990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 21000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 21010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 21020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 21030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 21040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 21050b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 21060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 21070b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 2108102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 2109102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 21105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 21115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 21125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 21135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 211428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PreImplicitCallKind: { 211528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 211628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PreCall: "; 211728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 211828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 211928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 212028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 212128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 212228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 212328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 212428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PostImplicitCallKind: { 212528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 212628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PostCall: "; 212728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 212828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 212928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 213028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 213128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 213228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 213328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 2134aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 21355f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 21369c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 21378c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 213831ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << S->getStmtClassName() << ' ' << (const void*) S << ' '; 2139e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2140e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 214128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, S->getLocStart()); 21421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21435f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 21441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 21455f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 21467090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 21477090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 21487090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 21497090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 21507090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 21511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 215210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 215310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 215410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 21558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 21568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 21578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 21588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 21598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 21608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 21618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 21628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 21638c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 21648c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 21658c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 21668c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 21678c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 21688c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 21698c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 21708c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 217110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 21721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21738c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 21748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 21758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 21769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 2177aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 2178aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 21791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21809c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 21811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2182e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 21831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2184b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 2185e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2186e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 21871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21889b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 21899b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 2190642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 21917da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 2192a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 21939b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 21941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2195daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 21969c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 21971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 21999c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 2200daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 2201e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2202e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 22031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22049c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 2205daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 2206e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 2207daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 22081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2209daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2210daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2211daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2212daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2213daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2214daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2215daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 22161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2217daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2218daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2219daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2220b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2221b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2222b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2223b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2224b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2225b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2226b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 22271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2228b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 22291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2230b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2231b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 22321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 223310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 223410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 223510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 22364a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 22374a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 22383b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 223910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2240aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2241aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 22421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 224431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << "\\|StateID: " << (const void*) state.getPtr() 224531ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky << " NodeID: " << (const void*) N << "\\|"; 22465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2247ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2248ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2249ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2250ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2251ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2252ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2253ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2254aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2255aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2256aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 22571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2258aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2259aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2260ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 22617ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 22629c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 22637ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2264031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2265031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2266031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 22677ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 22687ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2269ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2270ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2271d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 22721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2273ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2274031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2275940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2276940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2277940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2278940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2279940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2280940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2281940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2282404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2283404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 22844a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2285404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2286940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 22871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22887ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2289ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2290493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2291493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2292493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2293ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2294d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 22951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2296493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2297493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2298493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2299493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2300493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2301493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2302d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2303493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2304493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2305493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 23061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2307031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2308493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2309cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 23106cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2311cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2312d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 23131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23143b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2315e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2316e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2317ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2318