ExprEngine.cpp revision 75f31c4862643ab09479c979fabf754e7ffe1460
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 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 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 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 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); 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 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 175f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (isa<NonLoc>(V)) { 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, 20235bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::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: 228ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2293c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 231ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<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: 237ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<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. 4073682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose const Expr *Init = BMI->getInit(); 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: 443056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4444ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4454ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 446056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4474ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4484ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 449056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4504ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4514ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 452056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), 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 475888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXDestructor(varType, cast<loc::MemRegionVal>(dest).getRegion(), 476200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose 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. 490888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose QualType BaseTy = D.getBaseSpecifier()->getType(); 491888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal BaseVal = getStoreManager().evalDerivedToBase(ThisVal, BaseTy); 492888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 493888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXDestructor(BaseTy, cast<loc::MemRegionVal>(BaseVal).getRegion(), 494200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose CurDtor->getBody(), /*IsBase=*/true, Pred, Dst); 495888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose} 4964ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 497d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 4983a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 4993a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const FieldDecl *Member = D.getFieldDecl(); 5003a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 5013a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 5023a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5033a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 5043a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Loc ThisVal = getSValBuilder().getCXXThis(CurDtor, 5053a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose LCtx->getCurrentStackFrame()); 5063a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal FieldVal = State->getLValue(Member, cast<Loc>(State->getSVal(ThisVal))); 5073a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 5083a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose VisitCXXDestructor(Member->getType(), 5093a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose cast<loc::MemRegionVal>(FieldVal).getRegion(), 510200fa2e70d52ae6d620e81cd45536071fdde70c0Jordan Rose CurDtor->getBody(), /*IsBase=*/false, Pred, Dst); 5113a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose} 5124ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 513d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 514056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 515056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 5169c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 51748b6247804eacc262cc5508e0fbb74ed819fbb6eJordan Rosevoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 5186889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 5190bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 5200bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 5210bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 5226889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 52366c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, DstTop, *currBldrCtx); 5240bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 525e9cd031c77a92015571425b6445e8867816997cdJordan Rose assert(!isa<Expr>(S) || S == cast<Expr>(S)->IgnoreParens()); 5261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 527e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 528f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 529f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5349be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 535c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5386ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5394ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 54021ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 541552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 543c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5446b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 545be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 546c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 5479a4db032ecd991626d236a502e770126db32bd31Richard Smith case Stmt::FunctionParmPackExprClass: 54828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 54928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 55001d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 552fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose const ExplodedNode *node = Bldr.generateSink(S, Pred, Pred->getState()); 55366c486f275531df6362b3511fc3af6563561801bTed Kremenek Engine.addAbortedBlock(node, currBldrCtx->getBlock()); 554c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 555c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5565fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 557f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 558f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 559f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 560f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 56746eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 570d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 572d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5731b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5741b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 575534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5761b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5771b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 578d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 579d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 580ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5811b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5821b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5834ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCSubscriptRefExprClass: 5844ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCPropertyRefExprClass: 5854ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose llvm_unreachable("These are handled by PseudoObjectExpr"); 5864ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose 5878ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5888f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5898bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5915eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 592ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5938ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5948ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5958ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5964beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 597ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5984beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 599ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6004beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 6014beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 602ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 603e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 604f85e193739c953358c865005855253af4f68a497John McCall break; 605f85e193739c953358c865005855253af4f68a497John McCall 6061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 6071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 6081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 6091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 613f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 6141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 6151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 6161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 6181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6191b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6201b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 622e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 62356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 62461eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 625276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 626337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6271b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6281b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 630bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 631bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 632bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 633c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 634c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 635477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 637bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 638f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 639e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 640e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 641cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 642b66529d04727dc686b97ea3d937fc9785792f505Jordan Rose case Stmt::CXXDefaultArgExprClass: 64369a0e5021c5c49a34aa25cd89b1e613a52097e65Jordan Rose case Stmt::SubstNonTypeTemplateParmExprClass: 644bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 645bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 646bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 647bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 648bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 649bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 650e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 651bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 65470fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 65570fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 65670fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 65770fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6621a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6631a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 66466c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currBldrCtx); 6651a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 66670fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 66770fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 66870fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 6691a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6701a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6711a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6721a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6733b1df8bb941a18c4a7256d7cfcbccb9de7e39995Ted Kremenek SVal result = svalBuilder.conjureSymbolVal(0, Ex, LCtx, resultType, 67466c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx->blockCount()); 6751a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6761a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6771a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6781a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6791a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6801a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6811a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6821a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6831a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 684540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 685ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 686892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 687ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 688540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 690df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier case Stmt::GCCAsmStmtClass: 691ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 692df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier VisitGCCAsmStmt(cast<GCCAsmStmt>(S), Pred, Dst); 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 694e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 695b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 6968cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 6978cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 6988cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 6998cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 7008cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 7018cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 702c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 703ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 704c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 705ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 706c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 707c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 708e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 70903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 710e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 711ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 712e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 713ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 714e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 715e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7162de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 7178bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 718ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 7195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 7205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 7215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 722e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 723e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 72406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 725ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 726ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 7270caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && 728bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 729031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 730892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7310caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, cast<Expr>(S)); 73248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 73348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 734892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 73548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 736ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 737e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 738e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 73906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 740f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose case Stmt::CXXOperatorCallExprClass: { 741f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const CXXOperatorCallExpr *OCE = cast<CXXOperatorCallExpr>(S); 742f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 743f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // For instance method operators, make sure the 'this' argument has a 744f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // valid region. 745f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const Decl *Callee = OCE->getCalleeDecl(); 746f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(Callee)) { 747f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) { 748f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef State = Pred->getState(); 749f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 750f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef NewState = 751f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose createTemporaryRegionIfNeeded(State, LCtx, OCE->getArg(0)); 752f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (NewState != State) 753f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Pred = Bldr.generateNode(OCE, Pred, NewState, /*Tag=*/0, 754f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramPoint::PreStmtKind); 755f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 756f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 757f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // FALLTHROUGH 758f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose } 759b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 7609fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7619fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 762ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 763b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 764ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 76506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 766e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 767337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 768337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 769337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 770337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 771337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 772337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 773337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 77406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 775744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 776888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose case Stmt::CXXConstructExprClass: { 777ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 778888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXConstructExpr(cast<CXXConstructExpr>(S), Pred, Dst); 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7807ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7817ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7827ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 783856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 784ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 786856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 787ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 788856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 789856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 790856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7916b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 792ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 79303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7946b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 795ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7966b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7976b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 798e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 799e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 8001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 801e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 802ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8039c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 804e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 805ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 806e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 807e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 809e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 810ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 811892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 812ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 813e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 814f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 815f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 816ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 817892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 818ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 819f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 8201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 822e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 82456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 82556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 82656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 827ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 828e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 829e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 831bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 832ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 833bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 834ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 835bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 836bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 837892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 838ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 839892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 840892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 841ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 842e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 843892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 845e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 846ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 847e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 848ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 849e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8510835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8520d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8530d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8540d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8550d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8560d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 857f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 858f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 859ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8609c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 861f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 862f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 863f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 864f85e193739c953358c865005855253af4f68a497John McCall 865f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 866f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 867f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 868f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 869f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 870f85e193739c953358c865005855253af4f68a497John McCall } 871f85e193739c953358c865005855253af4f68a497John McCall 872f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 873f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 874ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 875e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 876e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 877b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 87803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 879ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 880c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose const MaterializeTemporaryExpr *MTE = cast<MaterializeTemporaryExpr>(S); 881c210cb7a358d14cdd93b58562f33ff5ed2d895c1Jordan Rose CreateCXXTemporaryObject(MTE, Pred, Dst); 882ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 88303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 88403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 88503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 886c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 887ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 888c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 889ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 890c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 893ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 894892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 895ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 896469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 897ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 89897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 899ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 900892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 901ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 90297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 903af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 904af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 905ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 906af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 907ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 908af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 9091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 910d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose case Stmt::ObjCMessageExprClass: 911ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 912d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 913ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 914e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 916c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::ObjCAtThrowStmtClass: 917c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::CXXThrowExprClass: 918bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 919bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 920fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateSink(S, Pred, Pred->getState()); 921bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 9221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9231b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 924ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 926ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9271b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9298ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 930ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9318ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 932ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9338ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9348ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 935f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 936ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 937f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 938f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 939ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 940e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 942e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9439c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 944a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 945a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 946a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 947a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 948a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 949a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 950a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9529c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9538bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 954ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9575eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 958a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 959e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 960e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9616987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 96272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 963ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 96403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 9650caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek if (AMgr.options.eagerlyAssumeBinOpBifurcation && (U->getOpcode() == UO_LNot)) { 966031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 967892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9680caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek evalEagerlyAssumeBinOpBifurcation(Dst, Tmp, U); 96972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 97072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 971892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 972ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9731b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 97472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9754b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9764b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9774b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9788bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9794b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9804b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9825eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9835eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9844b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9854b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9885eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9894b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9904b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9914b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9924b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9931b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9941b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9951b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 10015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 100228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose const Stmt *CE = CalleeSF->getCallSite(); 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 10115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 101428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // processing the call. 10150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 101728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (isa<PreImplicitCall>(&L)) 101828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose continue; 1019852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose if (isa<CallEnter>(&L)) 1020852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose continue; 10215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 102228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SP->getStmt() == CE) 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1027253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10285903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10295903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10305903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10325903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 103328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // Note that CE is permitted to be NULL! 10345903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10355903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10365903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10375903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10405903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10415903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10425903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10435903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1044253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1045253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1046253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1047253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1048253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10505903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10575903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1058c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1059253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1060b355be838a22a511d078504b2277f70aea52ca85Anna Zaks NodeBuilderWithSinks &nodeBuilder, 1061b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 106227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 106327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 10642fa9d72d4d23ccdcd4137946e5ebafac7a04f04cTed Kremenek if (nodeBuilder.getContext().blockCount() >= AMgr.options.maxBlockVisitOnPath) { 1065ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1066253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1067b355be838a22a511d078504b2277f70aea52ca85Anna Zaks nodeBuilder.generateSink(Pred->getState(), Pred, &tag); 1068749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1069749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1070749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 1071b355be838a22a511d078504b2277f70aea52ca85Anna Zaks const LocationContext *CalleeLC = Pred->getLocation().getLocationContext(); 10723bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10735903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10745903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10753bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1076e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10773bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 10785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10815903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1082255d4d4226b24036ceb11228fbb74286e58620f7Ted Kremenek if ((!AMgr.options.NoRetryExhausted && 1083b355be838a22a511d078504b2277f70aea52ca85Anna Zaks replayWithoutInlining(Pred, CalleeLC))) 1084253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1085253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1087749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1088253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1089253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1090253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 109127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1092e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1093e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1094e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1095e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1096e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1097e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10986ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 10996ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11006ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11016ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11026ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1103294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11048bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1105294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1107294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11086ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 110903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11106ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11126ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11136ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11146ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11176ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11186ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11196ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11206ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11246ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11256ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11266ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11306ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11403f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenekstatic const Stmt *ResolveCondition(const Stmt *Condition, 11413f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const CFGBlock *B) { 11423f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 11433f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 11443f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11453f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const BinaryOperator *BO = dyn_cast<BinaryOperator>(Condition); 11463f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 11473f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11483f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11493f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // For logical operations, we still have the case where some branches 11503f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // use the traditional "merge" approach and others sink the branch 11513f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // directly into the basic blocks representing the logical operation. 11523f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // We need to distinguish between those two cases here. 11533f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11543f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // The invariants are still shifting, but it is possible that the 11553f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // last element in a CFGBlock is not a CFGStmt. Look for the last 11563f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // CFGStmt as the value of the condition. 11573f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend(); 11583f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek for (; I != E; ++I) { 11593f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGElement Elem = *I; 11603f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGStmt *CS = dyn_cast<CFGStmt>(&Elem); 11613f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!CS) 11623f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek continue; 11633f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (CS->getStmt() != Condition) 11643f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek break; 11653f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11663f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 11673f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11683f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek assert(I != E); 11693f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11703f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek while (Condition) { 11713f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek BO = dyn_cast<BinaryOperator>(Condition); 11723f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 11733f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11743f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = BO->getRHS()->IgnoreParens(); 11753f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 11763f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek llvm_unreachable("could not resolve condition"); 11773f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek} 11783f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11799c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1180a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1181ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11821aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1183a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1184a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 118566c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = &BldCtx; 1186f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1187b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11891aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1190a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11914e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1192b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1193b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11953f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11963f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // Resolve the condition in the precense of nested '||' and '&&'. 11973f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 11983f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 11993f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 12003f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = ResolveCondition(Condition, BldCtx.getBlock()); 120121028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 120221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 120321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 12040fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1205f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1206f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 12074e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 12088ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1209f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 12108ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1212f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1213f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1214f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1215cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1217cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1225cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1226cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1227cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1228cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1229cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1230cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1231cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1232cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12335eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1234cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1235cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1236cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1237cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1238cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12390835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1240b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12410835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12425eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12430835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 124473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 1245829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, true, PredI); 1246829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, false, PredI); 1247cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1250cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12510835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 12526960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StTrue, StFalse; 12536960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StTrue, StFalse) = PrevState->assume(V); 12546960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 1255cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1256cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12576960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StTrue) 12586960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StTrue, true, PredI); 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1260cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1261cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1263cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1264cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12656960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StFalse) 12666960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose builder.generateNode(StFalse, false, PredI); 1267cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1268cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1269cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1270cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 127166c486f275531df6362b3511fc3af6563561801bTed Kremenek currBldrCtx = 0; 1272f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1273f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1274e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1275754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1276ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1277754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12788bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12795eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1281754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1282754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1283754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12844a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1285754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1286754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1288d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1289754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12901c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1291ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1293ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 129424f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1295a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1296754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1297754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1298754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1300b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1301754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1302754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13031c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1304754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 13052055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 13062055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 13072055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1308754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1309754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1311754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1312b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1314754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1315a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1316754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1317f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1318d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 131973099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1320b355be838a22a511d078504b2277f70aea52ca85Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC, 1321b355be838a22a511d078504b2277f70aea52ca85Anna Zaks ExplodedNode *Pred) { 1322b355be838a22a511d078504b2277f70aea52ca85Anna Zaks StateMgr.EndPath(Pred->getState()); 13238501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 1324af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 13258501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks if (Pred->getLocationContext()->inTopFrame()) { 13268501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Remove dead symbols. 13278501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks ExplodedNodeSet AfterRemovedDead; 13288501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks removeDeadOnEndOfFunction(BC, Pred, AfterRemovedDead); 13298501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 13308501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks // Notify checkers. 13318501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks for (ExplodedNodeSet::iterator I = AfterRemovedDead.begin(), 13328501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks E = AfterRemovedDead.end(); I != E; ++I) { 13338501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *I, *this); 13348501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 13358501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } else { 13368501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, Pred, *this); 13378501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks } 13388501b7a1c4c4a9ba0ea6cb8e500e601ef3759debAnna Zaks 13394d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 134073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 134173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1342d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1343daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1344e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1345d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13468bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13479c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1349daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13505b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13512055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1352b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13532055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13542055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1355daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1356daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13575b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1358692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13598bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 136034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 136134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 136234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1365e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1366e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1367e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1368e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13699c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 137072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 137172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 137285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 137385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1375daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 137685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 137785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 137885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 137914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 138014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1382daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1383daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1384aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 138614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 138785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13889c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 138948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1390b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1393a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1395daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1396daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1397daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13981c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1399daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1400daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1402daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1403daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 140448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 14058bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 140648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 140748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 140848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 140948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 141048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 141148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 141248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 14135014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1414b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 141514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 141685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 141714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 14181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 141985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 142085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 14211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 142214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1423daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14254d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14264d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14274d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14284d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14294d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14304d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14314d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14324d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14334d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14344d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14354d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14364d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14374d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14384d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14394d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14404d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14414d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14424d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1443daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1444daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1445e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1446ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1447e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1448d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1449d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1450d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1451d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 145266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1453ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14548bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14566d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14579c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1458591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1459d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1460a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1461892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1462892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1463892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1464892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1465892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1466892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1467892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1468852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14696d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1470fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1471ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1472852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1473892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14749c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1475591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1476c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14786d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1479892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14809c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1481c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1482fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1483ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14846d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14851b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14865aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 1487fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose // FIXME: Compute lvalue of field pointers-to-member. 14880156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // Right now we just use a non-null void pointer, so that it gives proper 14890156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose // results in boolean contexts. 14900156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose SVal V = svalBuilder.conjureSymbolVal(Ex, LCtx, getContext().VoidPtrTy, 14910156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose currBldrCtx->blockCount()); 14920156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose state = state->assume(cast<DefinedOrUnknownSVal>(V), true); 14930156439a3d718ea0ef5922c38d189a60829c8a86Jordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1494fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 14955aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14965aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14975aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 1498fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose llvm_unreachable("Support for this Decl not implemented."); 14993271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 15003271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1501540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 15029c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 15039c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15049c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 15051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15069c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 15079c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1508892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 15091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15108f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 15118f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 15128f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 151366c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currBldrCtx); 1514ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15158f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 15168f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 15175eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 15188bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 15195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 15205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 15215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1522591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 1523fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 0, 1524fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 15251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1526540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1527540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1528469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15299c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15306889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 153266c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, TopDst, *currBldrCtx); 15336889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 1534603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose ValueDecl *Member = M->getMemberDecl(); 153510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1536603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // Handle static member variables and enum constants accessed via 1537603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose // member syntax. 1538603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (isa<VarDecl>(Member) || isa<EnumConstantDecl>(Member)) { 1539ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1540603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose VisitCommonDeclRefExpr(M, Member, Pred, Dst); 1541ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15425bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15435bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 154410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1545f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose ProgramStateRef state = Pred->getState(); 1546f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 1547f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Expr *BaseExpr = M->getBase(); 1548f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose 154910f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 1550603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(Member)) { 1551f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose if (MD->isInstance()) 1552f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 155310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 1554f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal MDVal = svalBuilder.getFunctionPointer(MD); 1555f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = state->BindExpr(M, LCtx, MDVal); 155620aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1557f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose Bldr.generateNode(M, Pred, state); 1558ce6644bc1e921833f9b3c10cf7d4a0b78e8d5dc9Jordan Rose return; 155920aa40342bd74895128860c081aa84cd85bfa68dJordan Rose } 156020aa40342bd74895128860c081aa84cd85bfa68dJordan Rose 1561f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose // Handle regular struct fields / member variables. 1562f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose state = createTemporaryRegionIfNeeded(state, LCtx, BaseExpr); 1563f1e67d75fc922ff905de9faa6326bb1a96685ec1Jordan Rose SVal baseExprVal = state->getSVal(BaseExpr, LCtx); 1564d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose 1565603513d2294c437b37bcf47f326b686e31bd9e84Jordan Rose FieldDecl *field = cast<FieldDecl>(Member); 1566e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 15676b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (M->isGLValue()) { 15686b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (field->getType()->isReferenceType()) { 1569d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose if (const MemRegion *R = L.getAsRegion()) 1570d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose L = state->getSVal(R); 1571d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose else 15726b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = UnknownVal(); 15736b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } 15746b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose 1575d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), 0, 1576d27a368f4800b447b970b7c438d0fb4da00838dcJordan Rose ProgramPoint::PostLValueKind); 15776b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } else { 1578ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1579bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1580ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1581ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1582469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1583469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15849c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15859c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15869c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 158793bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 158832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek SVal location, SVal Val, 15893682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose bool atDeclInit, const ProgramPoint *PP) { 15903682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 15913682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose const LocationContext *LC = Pred->getLocationContext(); 15923682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PostStmt PS(StoreE, LC); 15933682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose if (!PP) 15943682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose PP = &PS; 1595b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1596b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1597fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1598fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15993682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose StoreE, *this, *PP); 1600b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 160132a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // If the location is not a 'Loc', it will already be handled by 160232a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // the checkers. There is nothing left to do. 160332a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek if (!isa<Loc>(location)) { 160432a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek Dst = CheckedSet; 160532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek return; 160632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 160732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 16086b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 160966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currBldrCtx); 16106b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1611b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1612b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 16133d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 16143d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 161532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 161632a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // When binding the value, pass on the hint that this is a initialization. 161732a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // For initializations, we do not need to inform clients of region 161832a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek // changes. 161932a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek state = state->bindLoc(cast<Loc>(location), 162032a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek Val, /* notifyChanges = */ !atDeclInit); 162132a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek 16223d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 162332a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) { 16243d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 162532a549a64922af0903bdb777613ae7ae4490b70fTed Kremenek } 16263682f1ea9c7fddc7dcbc590891158ba40f7fca16Jordan Rose 16273d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 1628fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(L, state, PredI); 1629b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 16306b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1631a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1632a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 16339c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1634a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 16352e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1636e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 16372e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1638a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1639a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1640a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 16419c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 16429c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 16439c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16448bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1645ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 164614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 164714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 164814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 164914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16501b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1651b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1652bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 16531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1654b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1656b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 165773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 165873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1659a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1660b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16613d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16631b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1664bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1665bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1666bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1667bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1668bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1669bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1670bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1671bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1672bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 1673cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 167414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16755b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1676852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1677852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16789697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16799697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1680b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1681018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1682852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1683ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1684ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1685852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1686bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1687bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1688852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1689852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1690852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1691852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1692db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1693bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1694bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1695b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1696852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1697852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1698852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1699b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1700bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1701852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1702852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1703bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1704bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1705bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1706bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1707bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1708bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1709bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1710bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1711bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1712bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 17131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1714b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1715bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1716b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 17171b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1718b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 171966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Tmp, Dst, *currBldrCtx); 172073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 172173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1722b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17231b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1724b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1725db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 17265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 172796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 17287affe151f5689b2d3547b8947c4099532c78a021Jordan Rose SVal V = UnknownVal(); 17297affe151f5689b2d3547b8947c4099532c78a021Jordan Rose if (location.isValid()) { 173096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1731bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 17327affe151f5689b2d3547b8947c4099532c78a021Jordan Rose V = state->getSVal(cast<Loc>(location), LoadTy); 1733b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 17347affe151f5689b2d3547b8947c4099532c78a021Jordan Rose 17357affe151f5689b2d3547b8947c4099532c78a021Jordan Rose Bldr.generateNode(NodeEx, *NI, state->BindExpr(BoundEx, LCtx, V), tag, 17367affe151f5689b2d3547b8947c4099532c78a021Jordan Rose ProgramPoint::PostLoadKind); 1737d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 17381b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 17391b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1740bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1741bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1742bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1743bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1744bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1745bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1746bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1747bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 174866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder BldrTop(Pred, Dst, *currBldrCtx); 174900b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1750769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1751b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1752b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1753b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17549c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 175666c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Src, *currBldrCtx); 1757ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1758eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1759eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1760eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1761eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1762eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1763eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1764eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1765eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1766ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1767fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose static SimpleProgramPointTag tag("ExprEngine: Location"); 1768fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(NodeEx, Pred, state, &tag); 17690296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1770ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1771bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1772bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1774ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1775ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17766c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17770caa2d47b84337e942b3f6652adfafe4ae506cfeTed KremenekExprEngine::geteagerlyAssumeBinOpBifurcationTags() { 17786c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17790caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationTrue("ExprEngine : Eagerly Assume True"), 17800caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek eagerlyAssumeBinOpBifurcationFalse("ExprEngine : Eagerly Assume False"); 17810caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek return std::make_pair(&eagerlyAssumeBinOpBifurcationTrue, 17820caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek &eagerlyAssumeBinOpBifurcationFalse); 17836c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17846c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 17850caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenekvoid ExprEngine::evalEagerlyAssumeBinOpBifurcation(ExplodedNodeSet &Dst, 17860caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek ExplodedNodeSet &Src, 17870caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek const Expr *Ex) { 178866c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Src, Dst, *currBldrCtx); 178986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1790031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1791031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1792b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1793b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1794b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1796b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1797b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1799b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 18008bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 18015eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 18025344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 18035344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 18046c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 18050caa2d47b84337e942b3f6652adfafe4ae506cfeTed Kremenek geteagerlyAssumeBinOpBifurcationTags(); 18066c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 18076960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose ProgramStateRef StateTrue, StateFalse; 18086960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose tie(StateTrue, StateFalse) = state->assume(*SEV); 18096960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose 181048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 18116960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateTrue) { 181286b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 18135eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1814fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateTrue, tags.first); 181548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 181748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 18186960d08b4ddf389d7c81504df7f16dc645120482Jordan Rose if (StateFalse) { 181986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 18205eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1821fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateFalse, tags.second); 182248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 182348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 182448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 182548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 182648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 1827df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosiervoid ExprEngine::VisitGCCAsmStmt(const GCCAsmStmt *A, ExplodedNode *Pred, 1828df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier ExplodedNodeSet &Dst) { 182966c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 1830a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1831a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1833a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1834a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1835a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1837a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 18381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1839df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier for (GCCAsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1840a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1841a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1842a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 18431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1844a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1845a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1846ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 18471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1848a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1849ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1850ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 18518cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 18528cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 185366c486f275531df6362b3511fc3af6563561801bTed Kremenek StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx); 18548cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 18558cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 18568cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 1857094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1858e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1859ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1860ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1861aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1862d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1863e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18643b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1865aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1866aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 186747491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1868aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1869006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1870006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1871006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1872d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1873ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18749c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 187710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 187810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1879a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18809dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18814a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18824a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18834a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18845e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18852ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18862ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1887a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18898cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18908cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18912055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1892a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1893a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 189528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose static void printLocation(llvm::raw_ostream &Out, SourceLocation SLoc) { 189628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SLoc.isFileID()) { 189728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "\\lline=" 189828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 189928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << " col=" 190028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 190128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << "\\l"; 190228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 190328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 190428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 19059c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 19061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 190753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 190853ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1909803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1910803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1911aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 19121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1913aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 19140b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 19151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1916aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 19170b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 19180b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 19190b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 19200b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 19210b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 19220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 1923aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 19240b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 19251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1926aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1927aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1928aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 19291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1930102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1931102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1932102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1933102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19340b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 19350b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 19360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19370b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19380b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 19390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 19400b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19410b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19420b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 19430b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 19440b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19450b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19460b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 19470b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 1948102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1949102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19505903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 19515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 19525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 19535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 195428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PreImplicitCallKind: { 195528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 195628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PreCall: "; 195728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 195828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 195928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 196028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 196128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 196228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 196328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 196428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PostImplicitCallKind: { 196528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 196628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PostCall: "; 196728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 196828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 196928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 197028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 197128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 197228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 197328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 1974aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 19755f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 19769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 19778c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 197831ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << S->getStmtClassName() << ' ' << (const void*) S << ' '; 1979e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1980e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 198128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, S->getLocStart()); 19821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19835f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 19841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 19855f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 19867090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 19877090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 19887090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 19897090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 19907090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 19911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 199210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 199310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 199410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19958c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19968c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19978c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19988c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 20008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 20018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 20028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 20038c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 20048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 20058c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 20068c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 20078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 20088c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 20098c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 20108c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 201110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 20121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20138c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 20148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 20158c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 20169c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 2017aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 2018aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 20191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20209c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 20211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2022e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 20231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2024b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 2025e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2026e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 20271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20289b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 20299b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 2030642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 20317da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 2032a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 20339b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 20341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2035daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 20369c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 20371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 20399c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 2040daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 2041e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2042e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 20431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20449c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 2045daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 2046e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 2047daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2049daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2050daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2051daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2052daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2053daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2054daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2055daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2057daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2058daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2059daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2060b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2061b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2062b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2063b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2064b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2065b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2066b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 20671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2068b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2070b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2071b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 207310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 207410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 207510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 20764a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 20774a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 20783b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 207910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2080aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2081aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 20821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20838bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 208431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky Out << "\\|StateID: " << (const void*) state.getPtr() 208531ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky << " NodeID: " << (const void*) N << "\\|"; 20865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2087ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2088ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2089ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2090ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2091ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2092ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2093ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2094aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2095aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2096aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2098aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2099aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2100ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 21017ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 21029c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 21037ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2104031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2105031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2106031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 21077ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 21087ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2109ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2110ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2111d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 21121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2113ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2114031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2115940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2116940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2117940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2118940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2119940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2120940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2121940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2122404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2123404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 21244a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2125404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2126940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 21271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21287ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2129ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2130493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2131493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2132493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2133ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2134d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 21351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2136493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2137493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2138493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2139493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2140493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2141493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2142d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2143493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2144493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2145493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 21461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2147031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2148493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2149cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 21506cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2151cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2152d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 21531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21543b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2155e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2156e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2157ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2158