ExprEngine.cpp revision 5903a373db3d27794c90b25687e0dd6adb0e497d
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 1843dee220252ef0b42c5f8a3bb1eca97f84f2565fArgyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/CheckerManager.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 209b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 219b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 22d1e5a89226da79f7e6f43d40facc46abda9e5245Jordy Rose#include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" 23199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2416f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 26337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 27c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 281b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2916f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 300bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 31a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 326cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 33c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 344323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 380f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 39b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 409ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 41b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 42ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 43c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 44c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 45c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindingsSkipped, 46c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is skipped"); 47749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 48749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 49749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 50749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 51749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 52749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 535903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 565903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumNotNew, 575903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "Cached out"); 585903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumNull, 595903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "Null node"); 60c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks 61e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 6232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 6332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 6432c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 659c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 6632c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 6732c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 6832c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 6932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 7032c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 71bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 72bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 73bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 743fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 753fd5f370a28552976c52e76c3035d79012d78ddaAnna Zaks SetOfDecls *VisitedCallees) 7625e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 771d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 783fd5f370a28552976c52e76c3035d79012d78ddaAnna Zaks Engine(*this, VisitedCallees), 79d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 80c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 8132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 8232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 8350a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 84c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 858ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 868ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 87a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 88c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 89e1b364324b94e54c610a1681ab96df755ba766fdJordy Rose ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 90d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 91d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 92d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 93d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 94d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 95c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 9650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 97d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 98cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 99e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 10050a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 10150a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 102e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 103e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 104e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 105e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1068bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 1078bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 108a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 11152e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 11252e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 114a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1175974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 126b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1275974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 130b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1311397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1329c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 133c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1345974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1355974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1365974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1375974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 138b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1395974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1405974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 141b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1428bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1435974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 14452e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 161a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1625974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 165a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 166a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 167a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 168a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 169a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 170a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek loc::MemRegionVal L(getCXXThisRegion(MD, SFC)); 171a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 172a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 173a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 174a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 175a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1765974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 177cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 178a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 179a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 18052e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 181e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 182e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 183e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 184e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 185e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 186e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1879c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 18832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1898bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 190fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 191fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 19232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 19332a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1948bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 195183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 196c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 197c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1988bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1998bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 20035bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 201537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 20266c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 20366c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks const CallOrObjCMessage *Call) { 20435bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 20566c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 206c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 207c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2088bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 209dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 210dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 211dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 212dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 213e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 21430726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 215ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 216ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 217ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 218ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 219ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 220ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 221ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2229c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2233c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2243c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2253c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 226ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2273c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2283c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 229ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2313c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2323c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2333c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2343c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 235ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2363c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2379c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2389c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2399c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 241ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 242ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 243ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 244ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 245ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 246ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2509e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 252ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 253ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 254ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 255ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 256ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 257ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 258ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks if (isa<CallExpr>(S.getStmt())) 259ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 260ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 261ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 262ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 263ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 264ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 265ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 266ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 267ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2682ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek ExplodedNode *Pred) { 2692ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 2702ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek G.reclaimRecentlyAllocatedNodes(); 2712ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek 2720a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2730bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2740a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2750bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2774e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2798bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef EntryState = EntryNode->getState(); 2806bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2816bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 283bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 284882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 285c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 286ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (shouldRemoveDeadBindings(AMgr, S, Pred, LC)) { 287c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindings++; 2886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 289183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 290bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2916bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2956bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 296c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks } else { 297c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindingsSkipped++; 298bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 299241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 30077d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 301031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 302f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 303f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 304f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 3056bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 309aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 310f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3146bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 315fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 316fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 317183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 318183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 319fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 320fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 321fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 322aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 323fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 324fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3258bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3276bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3286bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3296bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3306bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3316bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 3326bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3336bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3356bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3366bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3386bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3396bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3408bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 342f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 343f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3446bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 34577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 347dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 348031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 349dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 351dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 352dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 353ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 354ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 355dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 356dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 358e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 359846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 360846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3610a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 362e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 363e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 364d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 365056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 366ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 367ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3680a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 369cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 370056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 371056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 373056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 374d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 375d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 376056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3779dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 37800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3799dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 3809dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 381e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 382e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen ProgramStateRef state = Pred->getState(); 3839dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 384e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen const FieldDecl *FD = BMI->getAnyMember(); 3859dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 386e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal FieldLoc = state->getLValue(FD, thisVal); 387e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 388e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen state = state->bindLoc(FieldLoc, InitVal); 3899dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 390e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Use a custom node building process. 391e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen PostInitializer PP(BMI, stackFrame); 392e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Builder automatically add the generated node to the deferred set, 393e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // which are processed in the builder's dtor. 394e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Bldr.generateNode(PP, Pred, state); 395056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 396056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 398056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 399056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 401056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 402056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 404056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 405056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 406d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 407056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 408056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 409dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 410dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 411dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4129c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4139c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 414d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 415ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 416ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4184ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 419056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4214ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 422056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 425056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4264ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 428056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4304ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4314ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 433ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 434dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 435dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4364ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4374ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 438056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 439056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 440056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4418bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 442056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4432210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4442210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4452210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4462210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4472210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4482210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4492210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4502210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4512210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 452b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 453056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 454b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4552210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 456056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4574ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4584ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 459d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 460056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4614ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 462d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 463056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4644ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 465d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 466056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 467056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4689c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4699c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4706889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4710bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4720bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4730bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4746889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4756889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4760bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 477f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 478f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 479892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 480f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 481e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 482e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 483e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 485ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 486e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 488e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 489f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 490f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4959be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 496c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 497ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5006ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5014ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 50221ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 503552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 505c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5066b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 507be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 508c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 50928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 51028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 51101d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 512ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 513337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState(), 514337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek /* sink */ true); 515ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 516c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 517c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5185fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5195fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5205fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 52191a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 522ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5235fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5245fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 525f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 526f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 527f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 528f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5341b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 53546eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 538d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 540d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5431b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 545d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 546d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 547ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5508ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5518f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5528bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 555ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5568ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5578ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5588ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5594beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 560ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5614beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 562ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5634beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5644beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 5651a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME. 5661a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCSubscriptRefExprClass: 5671a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 5681a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 56914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 570f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 57114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 57214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 573f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 5748bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 575f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 576f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 5775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, state->BindExpr(S, Pred->getLocationContext(), 5785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek val)); 579f85e193739c953358c865005855253af4f68a497John McCall break; 580f85e193739c953358c865005855253af4f68a497John McCall } 581f85e193739c953358c865005855253af4f68a497John McCall 582ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 583e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 584f85e193739c953358c865005855253af4f68a497John McCall break; 585f85e193739c953358c865005855253af4f68a497John McCall 5861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 593f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5981a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCNumericLiteralClass: 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 603e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 60456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 60561eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 606276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 607337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 609337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Currently all handling of 'throw' just falls to the CFG. We 610337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // can consider doing more if necessary. 611337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXThrowExprClass: 612337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 613337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 6141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 616bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 617bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 618bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 619477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6201a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 621bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 622f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 623e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 624e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 625cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 626bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 627bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 628bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 629bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 630bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 631bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 632e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 633bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6351a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 6361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCDictionaryLiteralClass: { 6371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME: explicitly model with a region and the actual contents 6431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // of the container. For now, conjure a symbol. 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6451a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6461a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6471a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const Expr *Ex = cast<Expr>(S); 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek QualType resultType = Ex->getType(); 6521a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6541a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6551a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6561a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6571a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6621a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6631a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6641a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 665540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 666ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 667892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 668ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 669540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 671e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 672ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 673e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 674ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 675e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 676b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 677c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 678ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 679c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 680ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 681c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 682c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 683e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 68403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 685e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 686ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 687e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 688ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 689e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6912de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6945eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6955eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 697e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 698e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 69906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 700ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 701ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 702b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 703bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 704031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 705892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7069c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 70748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 70848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 709892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 71048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 711ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 712e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 713e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 71406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 715b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 716b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7179fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7189fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 719ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 720b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 721ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 72206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 723e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 724337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 725337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 726337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 727337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 728337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 729337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 730337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 73106fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 732744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 7337ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7347ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7357ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7367ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 737ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 738892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 739ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7407ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7417ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7427ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 743856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 744ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 746856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 747ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 748856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 749856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 750856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7516b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 752ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7546b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7566b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7576b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 758e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 759e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 761e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 762ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7639c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 764e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 765ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 766e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 767e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 770ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 771892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 773e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 774f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 775f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 776ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 777892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 778ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 779f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 782e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 783ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 78556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 78656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 787ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 788e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 789e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 791bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 792ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 793bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 794ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 795bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 796bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 797892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 798ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 799892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 800892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 801ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 802e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 803892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 805e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 806ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 807e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 808ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 809e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8110835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8120d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8130d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8140d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8150d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8160d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 817f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 818f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8209c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 821f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 822f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 823f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 824f85e193739c953358c865005855253af4f68a497John McCall 825f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 826f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 827f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 828f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 829f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 830f85e193739c953358c865005855253af4f68a497John McCall } 831f85e193739c953358c865005855253af4f68a497John McCall 832f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 833f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 834ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 835e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 836e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 837b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 83803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 839ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 84103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 842e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 843e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 84403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 845e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 846ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 84703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 84803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 84903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 850c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 851ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 852c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 853ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 854c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85697ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 857ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 858892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 859ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 860469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 861ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 86297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 863ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 864892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 865ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 86697ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 867af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 868af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 869ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 870af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 871ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 872af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 874b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 875ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 876b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 877b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 878b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 879b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 880b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 881b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 882b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 883b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 884b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 885b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 886b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 887b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 888b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 889b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 890b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 891b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 892b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 893b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 894b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 895b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 896b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 897b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 898ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 899e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 900b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 9011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 902bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 903bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 904bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 905ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 906bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 907bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 9081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9091b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 910ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9111b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 912ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9131b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9158ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 916ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9178ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 918ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9198ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 921f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 922ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 923f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 924f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 925ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 926e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 928e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9299c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 930a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 931a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 932a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 933a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 934a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 935a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 936a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9389c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9398bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 940ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9415eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9425eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9435eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 944a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 945e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 946e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9476987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 94872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 949ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 95003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 951ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 952031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 953892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9549c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 95572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 95672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 957892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 958ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9591b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 96072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9614b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9624b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9634b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9648bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9654b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9664b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9695eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9704b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9714b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9745eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9754b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9764b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9774b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9784b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9791b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9801b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9825903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9835903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 9885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // processing the CallExpr. 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (isa<PostPurgeDeadSymbols>(L)) 10015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (SP->getStmt() == CalleeSF->getCallSite()) 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (!BeforeProcessingCall) { 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumNull++; 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const Stmt *CE = CalleeSF->getCallSite(); 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 10275903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (!IsNew) { 10285903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumNotNew++; 10295903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10305903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10325903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10335903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10345903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10355903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10365903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10375903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1040c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1041c03a39e16762627b421247b12a2658be630a3300Anna Zaksvoid ExprEngine::processCFGBlockEntrance(NodeBuilderWithSinks &nodeBuilder) { 104227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 104327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1044c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 104527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1046c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1047ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1048b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 1049749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1050749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1051749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (RootLC->getCurrentStackFrame() != CalleeLC->getCurrentStackFrame()) { 10565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10575903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10585903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10595903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 10605903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (!(AMgr.RetryExhausted && replayWithoutInlining(pred, CalleeLC))) 10615903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumMaxBlockCountReachedInInlined++; 10625903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1063749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 106427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1065e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1066e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1067e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1068e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1069e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1070e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10718bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 10725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 10735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 10745eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 10751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 107705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 1078a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 10791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 10811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 108305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10852de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 10861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 108805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 108905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 109005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 109105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 10921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10939c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 10942de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 109503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 10961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 109805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 10991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 110105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 110256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 110356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 11041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 110605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 11071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11089c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 11091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 111156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 111205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 111356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 11141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11155eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 111605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 11191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11209c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 11211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 11235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 112505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 112605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 112705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 11286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11306ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1133294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11348bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1135294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1137294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 113903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11406ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 114603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11506ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11526ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11709c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1171a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1172ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11731aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1174a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1175a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1176f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1177f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1178b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11801aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1181a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11824e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1183b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1184b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118621028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 118721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 118821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 11890fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1190f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1191f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 11924e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 11938ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1194f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 11958ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 11961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1197f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1198f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1199f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1200cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1201cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1202cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1203cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1204cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12058bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1207cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1208cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1209cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1210cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1211cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1212cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1214cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1215cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1217cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12185eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1220cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1221cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12240835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1225b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12260835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12275eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12285eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 12295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12300835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 123173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 12325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 12335eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 12345eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 12355eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1236cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1239cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12400835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1241cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1242cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 12445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 12455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1246cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1247cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1248cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1250cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1251cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12528bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 12535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 12545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1255cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1256cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1257cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1258cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1259f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1260f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1261f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1262e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1263754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1264ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1265754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12668bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1269754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1270754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1271754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12724a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1273754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1276d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1277754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12781c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1279ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1281ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 128224f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1283a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1284754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1285754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1286754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1288b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1289754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1290754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12911c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1292754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 12932055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 12942055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 12952055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1296754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1297754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1299754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1300b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1302754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1303a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1304754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1305f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1306d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 130773099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1308af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1309af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1310af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1311af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 13124d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 131373099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 131473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1315d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1316daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1317e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1318d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13198bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13209c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1322daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13235b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13242055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1325b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13262055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13272055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1328daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1329daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13305b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1331692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13328bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 133334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 133434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 133534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 133734feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1338e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1339e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1340e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1341e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13429c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 134372afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 134472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 134585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 134685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1348daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 134985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 135085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 135185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 135214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 135314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1355daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1356daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1357aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 135914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 136085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13619c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 136248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1363b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13658bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1366a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1368daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1369daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1370daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13711c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1372daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1373daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1375daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1376daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 137748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13788bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 137948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 138048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 138148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 138248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 138348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 138448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 138548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13865014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1387b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 138814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 138985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 139014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 13911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 139385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 13941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1396daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 13994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14004d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14014d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1416daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1417daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1418e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1419ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1420e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1421d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1422d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1423d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1424d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1425aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1426ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14278bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14285eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14296d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14309c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1431892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1432d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1433a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1434892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1435892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1436892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1437892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1438892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1439892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1440892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1441852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14426d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14435eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1444ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1445852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1446892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14479c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1448892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1449c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14505eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14516d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1452892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14539c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1454c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 14555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1456ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14576d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14581b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14595aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 14605aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek // FIXME: Compute lvalue of fields. 14615aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 14625aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek false, 0, ProgramPoint::PostLValueKind); 14635aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14645aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14655aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 14666d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 14676d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 14683271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14693271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1470540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14719c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14729c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14739c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14759c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1477892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14798f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14808f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14818f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1482aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1483ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14848f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14858f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14878bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14885eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 14895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 14905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 14918f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 14925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1493ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 14941b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1495540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1496540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1497469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 14989c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 14996889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15016889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 15026889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 15035bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 15045bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 15055bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1506ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 15075bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15095bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15105bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 15115bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 15125bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1513892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 151486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 151586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1516e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15178bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15185eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1520e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1521e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1522e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1523e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1524e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1525e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1527e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1528e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1529892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1530e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1531e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1532e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1533d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1534e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1535e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1536e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 15375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1538ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1539ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1540ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1541e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1542ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1543ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1544469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1545469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15469c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15479c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15489c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 154993bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15503d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1551b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1552b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1553fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1554fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15553d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15563d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1557b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15586b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1559aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15606b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15613d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1562b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1563b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15643d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15653d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1566a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1567b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1568b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1569b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1570f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1571fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1572fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1573fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1574f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15763d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15773d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15783d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 15793d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 15803d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 15813d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks Bldr.generateNode(L, PredI, state, false); 1582b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1583ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15846b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1585a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1586a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 15879c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1588a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1589e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1590e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1591e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1592a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1593a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1594a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 15959c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 15969c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 15979c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15988bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1599ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 160014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 160114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 160214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 160314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 160414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1605b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 160614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 160714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1609b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 16109c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 16111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1612b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16131b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1614b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 161573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 161673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1617a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1618b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16193d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16201b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16211b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 16229c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 16239c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16248bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1625ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1626cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 16271b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 162814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1629b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 163014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 163114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1632852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1633852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1634852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16359697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16369697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1637b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1638018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1639852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1640ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1641ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1642852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 16439c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1644852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1645852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1646852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1647852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1648db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 16495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location = state->getSVal(Ex, (*I)->getLocationContext()); 16509c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1651b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1652852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1653852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1654852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1655b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16569c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1657852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1658852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 16599c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 16609c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1662ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1663b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1665b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 16669c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1667b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1669b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1670aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 167173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 167273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1673b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16741b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1675b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1676db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 16775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 167896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1679b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1680b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 16815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, LCtx, UnknownVal()), 1682ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1683b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1684b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 168596ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 168696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 168796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 16885eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, LCtx, 16895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location, V), 1690ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1691b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1692d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 16931b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16941b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1695d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 16969c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16978bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1698ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1699aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 170000b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1701769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1702b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1703b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1704b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17059c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1706ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1707aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1708ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1709eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1710eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1711eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1712eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1713eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1714eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1715eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1716eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1717ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1718ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1719ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1720ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1721ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 17220296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1723ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1725eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1726ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1727ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1728ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17296c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17306c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17316c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17326c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17336c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17346c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17356c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17366c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1737d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17386800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1739aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 174086b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1741031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1742031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1743b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1744b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1745b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1747b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1748b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1750b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17518bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17525eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17535344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17545344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17556c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17566c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17576c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 175848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17598bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 176086b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17615eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1762ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 176348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17668bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 176786b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1769ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 177048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 177448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 17759c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1776a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1777a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1778a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1779a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 17801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1781a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1782a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1783a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 17841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1785a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1787a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1788a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1789a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1790a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 17911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1792a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1793a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1794ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1796a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1797ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1798ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1799094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1800e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1801ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1802ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1803aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1804d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1805e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18063b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1807aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1808aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 180947491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1810aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1811006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1812006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1813006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1814d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1815ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18169c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 181810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 181910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 182010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1821a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18229dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18234a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18244a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18254a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18265e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18272ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18282ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1829a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18318cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18328cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18332055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1834a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1835a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18379c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 183953ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 184053ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1841803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1842803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1843aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1845aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1846aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 18471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1848aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1849aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1851aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1852aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1853aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1855102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1856102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1857102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1858102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1859102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1860102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1861102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1862102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 18645903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 18655903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 18665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1867aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 18685f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 18699c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 18708c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 18718c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1873e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1874e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 18751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 18778c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1878642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18797da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1880a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 18817da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 18828c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18845f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 18851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 18865f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 18877090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 18887090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 18897090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 18907090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 18917090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 18921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 189310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 189410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 189510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18968c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 18978c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 18988c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 18998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19038c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19058c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19068c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19088c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19098c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19108c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19118c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 191210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19158c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19168c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1918aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1919aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19219c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1923e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1925b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1926e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1927e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19299b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19309b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1931642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19327da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1933a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19349b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1936daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19379c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19409c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1941daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1942e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1943e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19459c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1946daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1947e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1948daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1950daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1951daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1952daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1953daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1954daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1955daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1956daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1958daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1959daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1960daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1961b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1962b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1963b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1964b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1965b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1966b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1967b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 19681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1969b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1971b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1972b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 197410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 197510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 197610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19774a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 19784a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 19793b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 198010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1981aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1982aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 19831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19848bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 1985a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 19868673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 19875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 1988ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1989ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1990ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1991ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1992ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1993ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1994ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1995aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1996aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1997aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 19981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1999aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2000aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2001ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20027ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20039c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20047ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2005031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2006031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2007031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20087ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20097ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2010ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2011ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2012d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2014ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2015031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2016940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2017940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2018940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2019940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2020940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2021940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2022940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2023404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2024404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 2025404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 2026404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 2027404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 2028404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2029940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20317ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2032ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2033493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2034493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2035493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2036ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2037d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2039493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2040493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2041493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2042493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2043493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2044493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2045d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2046493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2047493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2048493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2050031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2051493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2052cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 20536cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2054cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2055d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 20561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20573b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2058e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2059e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2060ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2061