ExprEngine.cpp revision c2994283aa7538b7420c8e398cde7afa328d7042
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" 26c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 271b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2816f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 290bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 30a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 316cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 32c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 334323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 340f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 38b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 399ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 40b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 41ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 42c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 43c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 44c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindingsSkipped, 45c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is skipped"); 46c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks 47e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 4832c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 4932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 5032c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 519c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 5232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 5332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 5432c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 5532c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 5632c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 57bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 58bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 59bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 6017a38e2636a8b1ce473fc6504c4b16cb09db29f4Jordy RoseExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled) 6125e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 621d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 63d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis Engine(*this), 64d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 65c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6850a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 69c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 708ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 718ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 72a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 73c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 74e1b364324b94e54c610a1681ab96df755ba766fdJordy Rose ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 75d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 76d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 77d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 78d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 79d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 80c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 8150a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 82d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 83cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 84e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 8550a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 87e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 88e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 89e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 90e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 918bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 93a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 9652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 985974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 99a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1105974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 111b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 115b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1161397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1179c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 118c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 123b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 126b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1278bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 12952e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 130a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 131a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 132a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 133a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 134a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 135a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 136a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 137a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 138a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1475974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek loc::MemRegionVal L(getCXXThisRegion(MD, SFC)); 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1615974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 162cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 16552e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 166e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 167e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 168e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 169e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 170e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 171e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1729c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17332a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1748bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 175fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 176fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1798bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 180183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 181c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 182c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1838bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1848bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 18535bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 186537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 18766c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 18866c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks const CallOrObjCMessage *Call) { 18935bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 19066c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 191c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 192c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 194dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 195dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 196dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 197dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 198e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 19930726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 200ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 201ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 202ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 203ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 204ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 205ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 206ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2079c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 211ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 214ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2193c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 220ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2213c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2229c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2239c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2249c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 225ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 226ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 227ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 228ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 229ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 230ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 231ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 232ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 233ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 234ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2359e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 236ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 237ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 238ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 239ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 241ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 242ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 243ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks if (isa<CallExpr>(S.getStmt())) 244ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 245ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 246ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 252ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2532ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek ExplodedNode *Pred) { 2542ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 2552ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek G.reclaimRecentlyAllocatedNodes(); 2562ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek 2570a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2580bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2590a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2600bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2624e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2648bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef EntryState = EntryNode->getState(); 2656bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2666bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 268bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 269882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 270c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 271ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (shouldRemoveDeadBindings(AMgr, S, Pred, LC)) { 272c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindings++; 2736bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 274183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 275bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2766bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2776bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2786bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2796bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2806bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 281c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks } else { 282c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks NumRemoveDeadBindingsSkipped++; 283bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 284241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 28577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 286031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 287f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 288f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 289f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 2906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2916bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 294aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 295f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 300fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 301fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 302183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 303183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 304fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 305fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 306fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 307aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 308fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 309fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3108bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3146bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3156bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3166bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 3176bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3186bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3196bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3206bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3216bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3226bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3236bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3246bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3258bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 327f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 328f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3296bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 33077d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 332dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 333031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 334dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 336dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 337dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 338ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 339ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 340dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 341dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 343e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 344846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 345846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3460a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 347e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 348e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 349d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 350056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 351ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 352ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3530a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 354cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 355056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 356056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 357056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 358056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 359d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 360d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 361056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3629dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 36300eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 364056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet AfterEval; 3659dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3669dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 367056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Visit(BMI->getInit(), Pred, AfterEval); 3689dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 369aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(AfterEval, Dst, *currentBuilderContext); 370056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = AfterEval.begin(), 371056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = AfterEval.end(); I != E; ++I){ 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *P = *I; 3738bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = P->getState(); 3749dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 37500eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3769dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 377d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 3799dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 3809dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3819dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 382d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 3839dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 3849dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 385056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Bldr.generateNode(PP, P, state); 3869dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 387056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 388056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 389056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 390056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 391056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 394056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 395056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 396056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 398d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 399056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 401dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 402dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 403dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4049c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4059c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 406d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 407ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 408ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4104ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 411056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4124ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4134ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 414056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4154ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4164ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 417056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4184ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4194ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4214ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 425ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 426dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 427dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 430056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 431056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 432056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4338bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 434056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4352210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4362210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4372210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4382210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4392210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4402210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4412210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4422210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4432210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 444b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 445056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 446b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4472210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 448056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4494ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4504ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 451d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 452056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4534ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 454d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 455056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4564ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 457d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 458056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 459056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4609c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4619c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4626889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4630bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4640bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4650bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4666889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4676889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4680bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 469f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 470f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 471892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 472f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 473e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 474e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 475e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 477ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 478e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 480e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 481f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 482f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 4841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 4851b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 4881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4909be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 491c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 492ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4956ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 4964ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 49721ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 498552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 500c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5016b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 502be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 503c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 50428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 50528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 50601d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 507ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState()); 509ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 510c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 511c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5125fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5135fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5145fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 51591a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 516ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5175fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5185fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 519f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 520f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 521f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 522f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5231b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5241b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5251b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5261b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5271b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5281b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 52946eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 532d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 534d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5351b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5381b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 539d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 540d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 541ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5431b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5448ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5458f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5468bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 549ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5508ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5518ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5528ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5534beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 554ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5554beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 556ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5574beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5584beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 55914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 560f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 56114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 56214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 563f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 5648bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 565f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 566f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 5675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, state->BindExpr(S, Pred->getLocationContext(), 5685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek val)); 569f85e193739c953358c865005855253af4f68a497John McCall break; 570f85e193739c953358c865005855253af4f68a497John McCall } 571f85e193739c953358c865005855253af4f68a497John McCall 572ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 573ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 574f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 575ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 576f85e193739c953358c865005855253af4f68a497John McCall break; 577f85e193739c953358c865005855253af4f68a497John McCall 5781b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5791b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5801b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5811b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5821b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 585f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 594e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 59556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 59661eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 597276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 602bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 603bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 604bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 605477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 606bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 607f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 608e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 609e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 610bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 611bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 612bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 613bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 614bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 615bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 616e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 617bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 619540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 620ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 621892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 622ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 623540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 625e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 626ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 627e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 628ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 629e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 630b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 631892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 632ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 633892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 634892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 635ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 63667d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 637892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 639c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 640ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 641c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 642ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 643c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 644c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 645e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 64603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 647e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 648ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 649e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 650ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 651e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 652e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6532de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6548bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 655ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6575eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6585eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 659e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 660e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 66106fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 662ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 663ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 664b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 665bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 666031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 667892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6689c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 66948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 67048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 671892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 67248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 673ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 675e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 67606fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 677b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 678b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 679b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 680ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 681b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 682ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 68306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 684e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 68506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 686744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6877ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6887ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6897ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6907ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 691ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 692892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6947ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 6957ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 6967ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 697856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 698ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 69903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 700856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 701ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 702856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 703856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 704856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7056b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 706ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 70703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7086b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 709ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7106b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7116b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 712e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 713e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 715e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 716ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 718e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 719ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 720e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 721e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 723e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 725892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 726ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 727e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 728f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 729f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 730ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 731892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 732ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 733f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 73556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 736e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 737ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 73856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 73956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 74056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 741ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 742e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 743e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 745bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 746ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 747bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 749bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 750bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 751892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 752ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 753892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 754892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 756e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 757892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 759e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 760ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 761e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 762ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 763e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7650835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 7660d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 7670d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7680d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7690d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7700d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 771f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 772f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7749c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 775f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 776f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 777f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 778f85e193739c953358c865005855253af4f68a497John McCall 779f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 780f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 781f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 782f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 783f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 784f85e193739c953358c865005855253af4f68a497John McCall } 785f85e193739c953358c865005855253af4f68a497John McCall 786f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 787f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 788ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 789e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 790e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 791b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 79203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 793ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 79403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 79503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 79603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 797eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 79803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 79903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 800ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 80103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 80203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 80303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 804c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 805ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 806c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 807ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 808c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 81097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 811ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 812892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 813ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 814469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 815ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 81697ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 817ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 818892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 82097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 821af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 822af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 824af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 825ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 826af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 828b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 829ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 830b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 831b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 832b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 833b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 834b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 835b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 836b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 837b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 838b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 839b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 840b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 841b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 842b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 843b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 844b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 845b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 846b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 847b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 848b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 849b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 850b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 851b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 852ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 853e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 854b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 856bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 857bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 858bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 859ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 860bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 861bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 8621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8631b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 864ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8651b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 866ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8671b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8698ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 870ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8718ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 872ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8738ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 8748ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 875f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 876ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 877f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 878f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 879ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 880e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 882e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 8839c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 884a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 885a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 886a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 887a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 888a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 889a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 890a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8929c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 8938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 894ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 8955eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 8965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 8975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 898a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 899e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 900e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9016987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 90272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 903ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 90403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 905ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 906031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 907892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9089c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 90972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 91072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 911892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 912ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9131b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 91472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9154b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9164b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9174b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9188bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9194b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9204b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9244b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9254b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9275eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9285eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9294b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9304b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9314b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9324b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9331b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9341b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9351b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 936c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 937c03a39e16762627b421247b12a2658be630a3300Anna Zaksvoid ExprEngine::processCFGBlockEntrance(NodeBuilderWithSinks &nodeBuilder) { 93827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 93927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 940c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 94127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 942c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 943ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 944b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 94527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 946e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 947e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 948e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 949e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 950e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 951e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 9528bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 9535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 9545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 9555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 95805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 959a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 9601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 9621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 96405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 9651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9662de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 9671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 96905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 97005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 97105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 97205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 9731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9749c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 9752de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 97603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 9771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 97905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 98205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 98356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 98456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 98705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 9881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9899c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 9901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 99256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 99305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 99456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 9951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 99705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 10001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10019c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 10021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10039c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 10045eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 100505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 100605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 100705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 100805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 10096ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 10106ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 10116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 10126ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 10136ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1014294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 10158bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1016294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 10175eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1018294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 10196ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 102003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 10216ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 10226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10246ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 10256ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 10261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 102703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 10286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 10296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10306ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 10316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 10346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 10356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 10366ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 10376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 10406ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 10436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 10446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 10466ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 10496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 10506ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10519c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1052a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1053ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 10541aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1055a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1056a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1057f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1058f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1059b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 10601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 10611aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1062a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 10634e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1064b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1065b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 10661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 106821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 106921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 10700fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1071f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1072f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 10734e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 10748ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1075f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 10768ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 10771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1078f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1079f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1080f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1081cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1082cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1083cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1084cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1085cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 10868bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 10875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1088cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1089cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1090cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1091cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1092cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1093cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1094cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1095cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1096cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1097cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1098cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 10995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1100cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1101cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1102cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1103cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1104cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 11050835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1106b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 11070835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 11085eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 11095eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 11105eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 11110835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 111273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 11135eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 11145eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 11155eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 11165eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1117cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 11191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1120cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 11210835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1122cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1123cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 11248bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 11255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 11265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1127cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1128cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1129cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1131cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1132cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 11338bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 11345eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 11355eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1136cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1137cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1138cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1139cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1140f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1141f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1142f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1143e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1144754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1145ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1146754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11478bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 11485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 11491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1150754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1151754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1152754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 11534a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1154754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1155754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 11561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1157d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1158754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11591c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1160ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 11611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1162ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 116324f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1164a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1165754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1166754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1167754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1169b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1170754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1171754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1173754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 11742055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 11752055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 11762055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1177754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1178754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1180754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1181b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 11821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1183754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1184a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1185754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1186f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1187d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 118873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1189af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1190af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1191af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1192af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 11934d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 119473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 119573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1196d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1197daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1198e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1199d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 12008bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12019c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 12025eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1203daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 12045b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 12052055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1206b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 12072055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 12082055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1209daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1210daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12115b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1212692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 12138bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 121434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 121534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 121634feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 12171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 121834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1219e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1220e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1221e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1222e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 12239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 122472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 122572afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 122685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 122785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 12281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1229daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 123085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 123185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 123285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 123314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 123414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1236daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1237daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1238aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 124185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 12429c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 124348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1244b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 12468bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1247a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 12481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1249daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1250daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1251daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 12521c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1253daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1254daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1256daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1257daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 125848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 12598bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 126048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 126148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 126248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 126348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 126448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 126548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 126648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 12675014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1268b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 126914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 127085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 127114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 12721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 127485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 12751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1277daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12794d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 12804d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12814d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12824d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 12834d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 12844d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 12854d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 12864d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 12874d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 12884d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 12894d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 12904d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 12914d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 12924d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 12934d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12944d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 12954d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12964d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1297daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1298daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1299e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1300ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1301e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1302d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1303d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1304d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1305d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1306aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1307ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13088bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 13095eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 13106d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 13119c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1312892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1313d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1314a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1315892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1316892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1317892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1318892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1319892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1320892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1321892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1322852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 13236d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 13245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1325ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1326852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1327892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 13289c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1329892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1330c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 13315eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 13326d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1333892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 13349c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1335c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 13365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1337ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 13386d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 13391b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 13406d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 13416d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 13423271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 13433271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1344540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 13459c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 13469c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 13479c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 13481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13499c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 13509c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1351892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 13521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13538f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 13548f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 13558f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1356aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1357ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13588f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 13598f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 13605eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 13618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 13625eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 13635eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 13645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 13658f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 13665eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1367ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 13681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1369540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1370540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1371469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 13729c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 13736889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13756889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 13766889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 13775bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 13785bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 13795bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1380ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 13815bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1382ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 13835bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 13845bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 13855bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 13865bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1387892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 138886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 138986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1390e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 13918bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 13925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 13935eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1394e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1395e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1396e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1397e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1398e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1399e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 14005eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1401e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1402e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1403892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1404e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1405e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1406e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1407d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1408e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1409e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1410e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 14115eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1412ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1413ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1414ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1415e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1416ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1417ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1418469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1419469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 14209c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 14219c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 14229c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 142393bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 1424ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks SVal location, SVal Val, bool atDeclInit, 1425ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::Kind PointKind) { 1426b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1427b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1428fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1429fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1430ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks StoreE, *this, PointKind); 1431b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1432d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 14336b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1434aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 14356b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1436b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1437b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 14388bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*I)->getState(); 1439a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1440b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1441b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1442b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1443f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1444fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1445fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1446fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1447f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 14481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1449ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(StoreE, *I, state, false, 0, PointKind); 1450b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1451ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14526b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1453a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1454a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 14559c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1456a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1457e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1458e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1459e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1460a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1461a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1462a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 14639c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 14649c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 14659c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14668bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1467ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 146814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 146914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 147014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 147114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 147214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1473b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 147414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 147514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 14761b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1477b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14789c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1480b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1482b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 148373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 148473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1485a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1486b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 1487ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false, 1488ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostStoreKind); 14891b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14901b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 14919c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 14929c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1494ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1495cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 14961b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 149714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1498b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 149914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 150014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1501852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1502852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1503852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 15049697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 15059697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1506b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1507018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1508852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1509ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1510ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1511852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 15129c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1513852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1514852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1515852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1516852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1517db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 15185eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location = state->getSVal(Ex, (*I)->getLocationContext()); 15199c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1520b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1521852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1522852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1523852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1524b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15259c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1526852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1527852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 15289c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 15299c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1531ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1532b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1534b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 15359c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1536b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 15371b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1538b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1539aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 154073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 154173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1542b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15431b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1544b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1545db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 15465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 154796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1548b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1549b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 15505eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, LCtx, UnknownVal()), 1551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1552b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1553b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 155496ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 155596ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 155696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 15575eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, LCtx, 15585eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek location, V), 1559ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1560b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1561d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 15621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 15631b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1564d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 15659c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15668bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, 1567ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1568aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 156900b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1570769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1571b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1572b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1573b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15749c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1575ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1576aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1577ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1578eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1579eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1580eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1581eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1582eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1583eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1584eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1585eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1586ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1587ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1588ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1589ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1590ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 15910296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1592ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1593ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1594eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1595ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1596ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1597ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 15986c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 15996c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 16006c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 16016c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 16026c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 16036c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 16046c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 16056c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1606d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 16076800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1608aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 160986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1610031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1611031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1612b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1613b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1614b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 16151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1616b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1617b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 16181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1619b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 16208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 16215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 16225344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 16235344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 16246c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 16256c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 16266c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 162748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 16288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 162986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 16305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1631ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 163248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 16331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 163448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 16358bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 163686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 16375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1638ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 163948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 164048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 164148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 164248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 164348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 16449c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 16459c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1646ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 16471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1648ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16499c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 165003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 165103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 16529c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1653ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1654ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1655ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1656ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1658031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1659892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1660ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1662bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1663ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1664ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1665ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16669c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 166703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 166803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 16699c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16709c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1671ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1672aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1673ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 16741c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 16751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1676ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1677ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1678ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16808bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1683ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 16841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16855eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = state->getSVal(*OI, Pred->getLocationContext()); 16861c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 16871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16881c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 16893ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1690ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1692ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, Pred, state); 1693ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1694ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1696031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1697ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 16981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1699ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 17001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1701e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1702ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1703ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1704ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1705094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1706094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1707e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1708ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1709ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1710aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1711d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1712e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 17133b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1714aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1715aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 171647491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1717aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1718006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1719006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1720006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1721d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1722ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 17239c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 17241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 172510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 172610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 172710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1728a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 17299dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 17304a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 17314a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 17324a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 17335e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 17342ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 17352ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1736a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 17371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17388cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 17398cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 17402055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1741a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1742a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 17431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17449c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 174653ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 174753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1748803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1749803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1750aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 17511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1752aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1753aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 17541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1755aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1756aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1758aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1759aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1760aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1762102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1763102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1764102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1765102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1766102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1767102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1768102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1769102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1770aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 17715f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 17729c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 17738c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 17748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1776e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1777e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 17781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 17808c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1781642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17827da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1783a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 17847da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 17858c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17875f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 17895f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 17907090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 17917090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 17927090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 17937090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 17947090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 179710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 179810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 17998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 18008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 18018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 18028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 18038c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 18048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 18058c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 18068c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 18078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 18088c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 18098c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 18108c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 18118c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 18128c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 18138c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 18148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 181510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18178c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 18188c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18198c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18209c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1821aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1822aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 18231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18249c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1826e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1828b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1829e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1830e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 18311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18329b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 18339b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1834642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18357da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1836a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 18379b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 18381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1839daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 18409c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 18411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 18439c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1844daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1845e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1846e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 18471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18489c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1849daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1850e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1851daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1853daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1854daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1855daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1856daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1857daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1858daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1859daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1861daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1862daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1863daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1864b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1865b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1866b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1867b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1868b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1869b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1870b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 18711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1872b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1874b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1875b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 187810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 187910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18804a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 18814a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 18823b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 188310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1884aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1885aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 18861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18878bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 1888a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 18898673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 18905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 1891ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1892ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1893ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1894ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1895ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1896ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1897ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1898aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1899aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1900aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 19011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1902aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1903aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1904ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 19057ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 19069c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 19077ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1908031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1909031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1910031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 19117ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 19127ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1913ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1914ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1915d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 19161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1917ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1918031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1919940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1920940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1921940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1922940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1923940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1924940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1925940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1926404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1927404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1928404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1929404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1930404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1931404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1932940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 19331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19347ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1935ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1936493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1937493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1938493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1939ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1940d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 19411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1942493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1943493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1944493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1945493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1946493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1947493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1948d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1949493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1950493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1951493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 19521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1953031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1954493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1955cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 19566cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1957cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1958d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19603b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1961e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 1962e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 1963ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 1964