ExprEngine.cpp revision e62f048960645b79363408fdead53fec2a063c52
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 56e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 5732c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 5832c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 5932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 609c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 6132c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 6232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 6332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 6432c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 6532c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 66bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 67bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 68bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 693fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 703bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks SetOfDecls *VisitedCallees, 713bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks FunctionSummariesTy *FS) 7225e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 731d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 74e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine(*this, VisitedCallees, FS), 75d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 76c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 7732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 7832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 7950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 80c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 818ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 828ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 83a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 84c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 85e62f048960645b79363408fdead53fec2a063c52Anna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 86d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 87d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 88d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 89d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 90d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 91c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 9250a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 93d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 94cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 95e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 9650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 9750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 98e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 99e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 100e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 101e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1028bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 1038bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 104a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 10752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 10852e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 110a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1115974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1175974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 122b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 126b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1271397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1289c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 129c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1315974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1325974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1335974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 134b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1355974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1365974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 137b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1388bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1395974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 14052e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1585974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 161a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 162a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 165a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 166a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek loc::MemRegionVal L(getCXXThisRegion(MD, SFC)); 167a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 168a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 169a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 170a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 171a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1725974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 173cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 174a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 175a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 17652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 177e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 178e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 179e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 180e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 181e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 182e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1839c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 18432a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1858bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 186fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 187fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 18832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 18932a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1908bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 191183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 192c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 193c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1948bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1958bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 19635bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 197537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 19866c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 19966c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks const CallOrObjCMessage *Call) { 20035bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 20166c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 202c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 203c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2048bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 205dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 206dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 207dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 208dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 209e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 21030726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 211ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 212ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 213ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 214ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 215ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 216ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 217ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2189c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2193c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2203c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2213c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 222ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2233c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2243c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 225ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2263c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2273c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2283c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2293c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 231ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2323c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2339c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2349c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2359c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 236ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 237ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 238ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 239ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 241ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 242ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 243ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 244ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 245ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2469e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 252ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 253ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 254ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks if (isa<CallExpr>(S.getStmt())) 255ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 256ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 257ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 258ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 259ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 260ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 261ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 262ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 263ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2642ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek ExplodedNode *Pred) { 2652ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 2662ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek G.reclaimRecentlyAllocatedNodes(); 2672ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek 2680a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2690bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2700a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2710bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2734e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2758bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef EntryState = EntryNode->getState(); 2766bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2776bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 279bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 280882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 281c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 282ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (shouldRemoveDeadBindings(AMgr, S, Pred, LC)) { 283c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindings++; 2846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 285183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 286bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2896bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2916bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 292c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks } else { 293c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindingsSkipped++; 294bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 295241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 29677d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 297031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 298f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 299f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 300f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 3016bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3036bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3046bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 305aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 306f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 311fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 312fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 313183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 314183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 315fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 316fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 317fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 318aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 319fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 320fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3218bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3226bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3236bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3246bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3256bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3276bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 3286bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3296bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3306bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3316bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3326bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3336bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3356bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 338f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 339f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3406bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 34177d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 343dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 344031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 345dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 347dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 348dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 349ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 350ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 351dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 352dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 354e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 355846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 356846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3570a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 358e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 359e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 360d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 361056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 362ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 363ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3640a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 365cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 366056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 367056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 368056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 369056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 370d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 371d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3739dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 37400eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3759dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 3769dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 377e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 378e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen ProgramStateRef state = Pred->getState(); 3799dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 380e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen const FieldDecl *FD = BMI->getAnyMember(); 3819dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 382e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal FieldLoc = state->getLValue(FD, thisVal); 383e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 384e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen state = state->bindLoc(FieldLoc, InitVal); 3859dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 386e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Use a custom node building process. 387e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen PostInitializer PP(BMI, stackFrame); 388e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Builder automatically add the generated node to the deferred set, 389e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // which are processed in the builder's dtor. 390e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Bldr.generateNode(PP, Pred, state); 391056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 394056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 395056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 396056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 398056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 399056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 401056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 402d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 404056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 405dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 406dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 407dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4089c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4099c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 410d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 411ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 412ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4144ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 415056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4164ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4174ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4194ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 424056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4254ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4264ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 429ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 430dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 431dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4334ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 434056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 435056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 436056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4378bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 438056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4392210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4402210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4412210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4422210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4432210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4442210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4452210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4462210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4472210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 448b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 449056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 450b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4512210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 452056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4534ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4544ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 455d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 456056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4574ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 458d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 459056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4604ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 461d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 462056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 463056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4649c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4659c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4666889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4670bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4680bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4690bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4706889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4716889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4720bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 473f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 474f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 475892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 476f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 477e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 478e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 479e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 481ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 482e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 484e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 485f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 486f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4919be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 492c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 493ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4966ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 4974ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 49821ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 499552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 501c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5026b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 503be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 504c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 50528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 50628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 50701d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 509337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState(), 510337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek /* sink */ true); 511ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 512c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 513c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5145fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5155fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5165fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 51791a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 518ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5195fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5205fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 521f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 522f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 523f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 524f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5251b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5261b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5271b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5281b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 53146eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 534d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5351b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 536d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5381b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5401b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 541d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 542d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 543ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5468ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5478f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5488bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5505eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5528ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5538ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5548ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5554beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 556ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5574beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 558ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5594beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5604beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 5611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME. 5621a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCSubscriptRefExprClass: 5631a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 5641a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 56514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 566f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 56714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 56814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 569f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 5708bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 571f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 572f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 5735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, state->BindExpr(S, Pred->getLocationContext(), 5745eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek val)); 575f85e193739c953358c865005855253af4f68a497John McCall break; 576f85e193739c953358c865005855253af4f68a497John McCall } 577f85e193739c953358c865005855253af4f68a497John McCall 578ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 579e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 580f85e193739c953358c865005855253af4f68a497John McCall break; 581f85e193739c953358c865005855253af4f68a497John McCall 5821b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5851b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 589f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5941a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCNumericLiteralClass: 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 599e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 60056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 60161eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 602276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 603337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 605337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Currently all handling of 'throw' just falls to the CFG. We 606337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // can consider doing more if necessary. 607337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXThrowExprClass: 608337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 609337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 612bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 613bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 614bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 615477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6161a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 617bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 618f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 619e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 620e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 621cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 622bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 623bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 624bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 625bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 626bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 627bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 628e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 629bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6311a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 6321a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCDictionaryLiteralClass: { 6331a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6341a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6351a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME: explicitly model with a region and the actual contents 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // of the container. For now, conjure a symbol. 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6451a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6461a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const Expr *Ex = cast<Expr>(S); 6471a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek QualType resultType = Ex->getType(); 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6521a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6541a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6551a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6561a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6571a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 661540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 662ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 663892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 664ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 665540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 667e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 668ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 669e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 670ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 671e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 672b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 673c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 674ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 675c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 676ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 677c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 678c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 679e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 68003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 681e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 682ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 683e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 684ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 685e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 686e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6872de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6888bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 689ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6915eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 693e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 694e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 69506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 696ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 697ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 698b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 699bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 700031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 701892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7029c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 70348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 70448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 705892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 70648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 707ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 708e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 709e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 71006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 711b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 712b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7139fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7149fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 715ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 716b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 717ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 71806fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 719e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 720337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 721337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 722337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 723337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 724337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 725337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 726337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 72706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 728744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 7297ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7307ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7317ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7327ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 733ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 734892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 735ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7367ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7377ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7387ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 739856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 742856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 743ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 744856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 745856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 746856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7476b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7506b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 751ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7526b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7536b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 754e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 755e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 757e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 758ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7599c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 760e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 761ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 762e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 763e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 765e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 766ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 767892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 768ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 770f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 771f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 773892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 775f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 778e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 78156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 78256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 783ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 784e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 785e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 787bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 788ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 789bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 790ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 791bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 792bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 793892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 794ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 795892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 796892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 797ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 798e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 799892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 801e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 802ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 803e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 804ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 805e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8070835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8080d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8090d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8100d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8110d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8120d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 813f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 814f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 815ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8169c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 817f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 818f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 819f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 820f85e193739c953358c865005855253af4f68a497John McCall 821f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 822f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 823f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 824f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 825f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 826f85e193739c953358c865005855253af4f68a497John McCall } 827f85e193739c953358c865005855253af4f68a497John McCall 828f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 829f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 830ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 831e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 832e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 833b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 83403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 835ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 83603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 83703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 838e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 839e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 84003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 841e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 842ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 84303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 84403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 84503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 846c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 847ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 848c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 849ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 850c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 853ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 854892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 855ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 856469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 857ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 85897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 859ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 860892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 861ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 86297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 863af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 864af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 865ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 866af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 867ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 868af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 870b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 871ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 872b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 873b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 874b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 875b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 876b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 877b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 878b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 879b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 880b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 881b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 882b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 883b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 884b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 885b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 886b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 887b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 888b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 889b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 890b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 891b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 892b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 893b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 894ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 895e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 896b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 898bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 899bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 900bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 901ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 902bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 903bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 9041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9051b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 906ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9071b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 908ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9091b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9118ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 912ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 914ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9158ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9168ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 917f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 918ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 919f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 920f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 921ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 922e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 924e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9259c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 926a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 927a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 928a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 929a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 930a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 931a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 932a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9349c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9358bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 936ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9385eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 940a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 941e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 942e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9436987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 94472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 945ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 94603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 947ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 948031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 949892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9509c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 95172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 95272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 953892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 954ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 95672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9584b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9594b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9608bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9614b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9624b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9635eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9655eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9664b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9674b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9695eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9705eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9714b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9724b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9734b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9744b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9751b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9761b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9771b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9815903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9825903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9835903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 9845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 9935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // processing the CallExpr. 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (isa<PostPurgeDeadSymbols>(L)) 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (SP->getStmt() == CalleeSF->getCallSite()) 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1004253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const Stmt *CE = CalleeSF->getCallSite(); 10115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1021253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1022253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1023253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1024253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1025253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10275903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10285903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10295903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10305903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10325903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10335903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10345903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1035c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1036253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1037253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NodeBuilderWithSinks &nodeBuilder) { 103827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 103927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1040c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 104127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1042c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1043ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1044253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1045253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 1046749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1047749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1048749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10503bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10533bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1054e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10553bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 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. 1060b47dbcbc12430fdf3e5a5b9f59cdec5480e89e75Anna Zaks if ((!AMgr.NoRetryExhausted && replayWithoutInlining(pred, CalleeLC))) 1061253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1062253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1064749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1065253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1066253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1067253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 106827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1069e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1070e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1071e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1072e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1073e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1074e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10758bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 10765eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 10775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 10785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 10791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 108105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 1082a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 10831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 108705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 10881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10892de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 10901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 109205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 109305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 109405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 109505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 10961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10979c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 10982de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 109903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11015eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 110205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 110505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 110656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 110756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 11081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 111005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 11111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11129c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 11131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 111556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 111605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 111756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 11231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11249c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 11251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11269c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 11275eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 112905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 113005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 113105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 11326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11366ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1137294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11388bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1139294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11405eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1141294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 114303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11466ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11516ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11526ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11715eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11726ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11749c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1175a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1176ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11771aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1178a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1179a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1180f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1181f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1182b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11841aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1185a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11864e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1187b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1188b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119021028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 119121028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 119221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 11930fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1194f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1195f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 11964e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 11978ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1198f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 11998ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1201f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1202f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1203f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1204cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1205cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1206cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1207cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1208cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12098bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12105eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1211cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1212cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1214cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1215cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1217cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1220cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1221cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1225cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1226cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1227cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12280835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1229b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12300835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12315eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 12335eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12340835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 123573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 12365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 12375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 12385eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 12395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1240cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1243cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12440835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1245cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1246cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12478bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 12485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 12495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1250cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1251cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1252cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1254cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1255cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12568bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 12575eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 12585eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1260cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1261cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1262cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1263f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1264f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1265f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1266e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1267754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1268ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1269754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12708bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12715eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1273754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1275754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12764a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1277754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1278754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1280d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1281754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12821c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1283ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1285ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 128624f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1287a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1288754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1289754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1290754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1292b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1293754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1294754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12951c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1296754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 12972055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 12982055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 12992055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1300754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1301754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1303754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1304b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1306754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1307a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1308754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1309f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1310d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 131173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1312af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1313af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1314af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1315af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 13164d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 131773099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 131873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1319d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1320daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1321e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1322d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13238bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13249c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1326daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13275b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13282055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1329b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13302055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13312055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1332daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1333daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13345b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1335692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 133734feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 133834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 133934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1342e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1343e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1344e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1345e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13469c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 134772afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 134872afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 134985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 135085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1352daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 135385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 135485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 135585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 135614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 135714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1359daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1360daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1361aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 136485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13659c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 136648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1367b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13698bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1370a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1372daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1373daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1374daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13751c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1376daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1377daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1379daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1380daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 138148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13828bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 138348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 138448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 138548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 138648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 138748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 138848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 138948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13905014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1391b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 139214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 139385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 139414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 139785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 13981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1400daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14164d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14174d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14184d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14194d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1420daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1421daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1422e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1423ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1424e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1425d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1426d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1427d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1428d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1429aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1430ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14318bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14336d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14349c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1435892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1436d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1437a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1438892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1439892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1440892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1441892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1442892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1443892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1444892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1445852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14466d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1448ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1449852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1450892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14519c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1452892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1453c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14556d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1456892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14579c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1458c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 14595eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1460ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14616d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14635aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 14645aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek // FIXME: Compute lvalue of fields. 14655aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 14665aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek false, 0, ProgramPoint::PostLValueKind); 14675aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14685aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14695aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 14706d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 14716d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 14723271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14733271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1474540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14759c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14769c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14779c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14799c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1481892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14838f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14848f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14858f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1486aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1487ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14888f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14898f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14918bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 14935eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 14945eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 14958f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 14965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1497ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 14981b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1499540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1500540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1501469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15029c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15036889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15056889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 15066889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 15075bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 15085bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 15095bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1510ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 15115bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1512ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15135bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15145bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 15155bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 15165bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1517892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 151886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 151986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1520e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15218bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1524e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1525e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1526e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1527e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1528e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1529e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1531e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1532e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1533892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1534e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1535e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1536e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1537d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1538e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1539e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1540e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 15415eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1542ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1543ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1544ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1545e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1546ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1547ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1548469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1549469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15509c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15519c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15529c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 155393bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15543d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1555b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1556b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1557fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1558fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15593d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15603d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1561b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15626b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1563aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15646b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15653d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1566b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1567b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15683d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15693d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1570a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1571b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1572b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1573b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1574f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1575fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1576fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1577fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1578f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15803d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15813d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15823d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 15833d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 15843d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 15853d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks Bldr.generateNode(L, PredI, state, false); 1586b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1587ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15886b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1589a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1590a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 15919c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1592a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1593e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1594e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1595e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1596a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1597a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1598a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 15999c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 16009c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 16019c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16028bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1603ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 160414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 160514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 160614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 160714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 160814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1609b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 161014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 161114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16121b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1613b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 16149c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 16151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1616b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16171b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1618b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 161973c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 162073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1621a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1622b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16233d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16241b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 16269c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 16279c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1629ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1630cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 16311b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 163214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1633b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 163414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 163514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1636852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1637852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1638852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16399697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16409697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1641b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1642018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1643852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1644ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1645ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1646852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 16479c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1648852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1649852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1650852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1651852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1652db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 16535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location = state->getSVal(Ex, (*I)->getLocationContext()); 16549c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1655b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1656852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1657852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1658852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1659b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16609c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1661852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1662852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 16639c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 16649c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16658bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1666ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1667b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1669b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 16709c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1671b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16721b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1673b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1674aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 167573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 167673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1677b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16781b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1679b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1680db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 16815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 168296ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1683b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1684b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 16855eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, LCtx, UnknownVal()), 1686ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1687b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1688b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 168996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 169096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 169196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 16925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, LCtx, 16935eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location, V), 1694ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1695b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1696d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 16971b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16981b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1699d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 17009c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 17018bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1702ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1703aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 170400b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1705769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1706b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1707b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1708b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17099c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1710ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1711aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1712ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1713eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1714eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1715eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1716eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1717eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1718eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1719eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1720eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1721ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1722ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1723ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1724ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1725ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 17260296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1727ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1728ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1729eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1730ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1731ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1732ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17336c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17346c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17356c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17366c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17376c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17386c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17396c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17406c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1741d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17426800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1743aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 174486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1745031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1746031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1747b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1748b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1749b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1751b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1752b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1754b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17558bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17575344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17585344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17596c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17606c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17616c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 176248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17638bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 176486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17655eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1766ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 176748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17708bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 177186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 177448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 177848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 17799c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1780a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1781a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1782a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1783a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 17841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1785a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1786a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1787a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1789a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 17901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1791a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1792a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1793a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1794a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1796a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1797a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1798ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1800a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1801ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1802ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1803094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1804e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1805ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1806ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1807aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1808d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1809e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18103b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1811aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1812aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 181347491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1814aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1815006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1816006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1817006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1818d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1819ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18209c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 182310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 182410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1825a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18269dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18274a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18284a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18294a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18305e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18312ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18322ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1833a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18358cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18368cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18372055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1838a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1839a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18419c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 184353ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 184453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1845803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1846803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1847aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1849aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1850aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 18511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1852aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1853aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1855aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1856aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1857aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1859102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1860102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1861102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1862102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1863102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1864102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1865102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1866102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18675903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 18685903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 18695903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 18705903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1871aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 18725f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 18739c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 18748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 18758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1877e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1878e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 18791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 18818c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1882642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18837da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1884a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 18857da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 18868c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18885f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 18891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 18905f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 18917090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 18927090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 18937090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 18947090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 18957090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 18961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 189710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 189810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 189910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19038c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19058c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19068c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19088c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19098c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19108c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19118c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19128c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19138c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19158c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 191610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19188c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19198c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19208c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19219c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1922aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1923aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19259c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1927e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1929b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1930e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1931e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19339b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19349b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1935642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19367da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1937a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19389b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1940daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19419c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19449c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1945daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1946e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1947e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19499c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1950daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1951e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1952daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1954daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1955daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1956daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1957daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1958daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1959daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1960daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1962daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1963daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1964daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1965b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1966b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1967b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1968b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1969b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1970b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1971b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 19721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1973b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1975b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1976b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 197810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 197910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 198010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19814a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 19824a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 19833b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 198410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1985aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1986aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 19871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19888bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 1989a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 19908673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 19915eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 1992ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1993ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1994ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1995ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1996ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1997ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1998ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1999aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2000aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2001aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2003aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2004aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2005ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20067ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20079c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20087ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2009031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2010031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2011031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20127ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20137ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2014ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2015ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2016d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2018ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2019031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2020940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2021940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2022940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2023940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2024940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2025940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2026940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2027404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2028404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 20294a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2030404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2031940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20337ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2034ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2035493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2036493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2037493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2038ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2039d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2041493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2042493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2043493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2044493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2045493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2046493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2047d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2048493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2049493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2050493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2052031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2053493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2054cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 20556cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2056cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2057d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 20581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20593b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2060e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2061e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2062ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2063