ExprEngine.cpp revision 6800ba622e4edf287801ac69c42c61e7e294b06b
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 1643dee220252ef0b42c5f8a3bb1eca97f84f2565fArgyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/CheckerManager.h" 179b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 189b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 20d1e5a89226da79f7e6f43d40facc46abda9e5245Jordy Rose#include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" 21199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2216f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2316f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 24c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 251b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2616f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 27e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek#include "clang/Basic/SourceManager.h" 280bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 29a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 306cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 314323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 320f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 330f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 340f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 36b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 379ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 38b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 39ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 40e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 4132c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 4232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 4332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 449c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 4532c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 4632c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 4732c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 4832c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 4932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 50bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 51bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 52bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 5317a38e2636a8b1ce473fc6504c4b16cb09db29f4Jordy RoseExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled) 5425e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 551d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 56d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis Engine(*this), 57d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 58c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 5932a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6150a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 62c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 638ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 648ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 65a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 66c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 67e1b364324b94e54c610a1681ab96df755ba766fdJordy Rose ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 68d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 69d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 70d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 71d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 72d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 73c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 7450a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 75d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 76cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 77e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 7850a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 7950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 80e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 81e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 82e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 83e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 8418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::getInitialState(const LocationContext *InitLoc) { 8518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = StateMgr.getInitialState(InitLoc); 861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 88cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek 8952e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9052e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 915974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 92b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek const Decl *D = InitLoc->getDecl(); 935974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 945974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 955974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 965974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 975974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 985974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 104b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 108b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1091397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1109c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 111c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 116b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1175974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 119b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *newState = state->assume(*Constraint, true)) 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 122b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 12452e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 126b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 1275974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // method. 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 1311397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 132b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1335974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 1345974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Assume that the pointer value in 'self' is non-null. 13528f47b92e760ccf641ac91cb0fe1c12d9ca89795Ted Kremenek state = state->assume(*LV, true); 1365974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek assert(state && "'self' cannot be null"); 1375974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 138cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 1395974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } while (0); 140b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14152e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 142e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 143e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 144e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenekbool 145e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed KremenekExprEngine::doesInvalidateGlobals(const CallOrObjCMessage &callOrMessage) const 146e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek{ 147e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (callOrMessage.isFunctionCall() && !callOrMessage.isCXXCall()) { 148e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek SVal calleeV = callOrMessage.getFunctionCallee(); 149e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const FunctionTextRegion *codeR = 1505f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<FunctionTextRegion>(calleeV.getAsRegion())) { 151e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 152e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek const FunctionDecl *fd = codeR->getDecl(); 153e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const IdentifierInfo *ii = fd->getIdentifier()) { 1545f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fname = ii->getName(); 155e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (fname == "strlen") 156e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return false; 157e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 158e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 159e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 160e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 161e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek // The conservative answer: invalidates globals. 162e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return true; 163e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek} 164e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 165e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 166e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 167e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 168e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1699c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 171294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekconst ProgramState *ExprEngine::processAssume(const ProgramState *state, 172fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 173fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17432a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17532a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 17618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(const ProgramState *state) { 177183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 178c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 179c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 18018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState * 18118c66fdc3c4008d335885695fe36fb5353c5f672Ted KremenekExprEngine::processRegionChanges(const ProgramState *state, 18235bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 183537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 184537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Regions) { 18535bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 186537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose Explicits, Regions); 187c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 188c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 189dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rosevoid ExprEngine::printState(raw_ostream &Out, const ProgramState *State, 190dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 191dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 192dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 193dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 194e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 19530726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 196ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 197ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 198ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 199ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 200ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 201ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 202ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2039c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2063c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 207ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 210ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 216ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2189c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 219f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentStmtIdx = 0; 220f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 2219c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2229c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 223ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2244e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 2256bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Use RAII to remove the unnecessary, tagged nodes. 2266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks //RegisterCreatedNodes registerCreatedNodes(getGraph()); 2276bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 228d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 229d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.reclaimRecentlyAllocatedNodes(); 23018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek // Recycle any unused states in the ProgramStateManager. 231e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek StateMgr.recycleUnusedStates(); 232e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek 2330a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2340bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2350a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2360bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2384e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *EntryState = EntryNode->getState(); 2416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2426bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 244bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 245882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 246c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 247d30952838421ddfb9f7e346b2ba8213889a5f789Anna Zaks if (AMgr.getPurgeMode() != PurgeNone) { 2486bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 249183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 250bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2516bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2526bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2536bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2546bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2556bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 256bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 257241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 25877d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 259031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 260f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 261f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 262f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 2636bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2646bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2656bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2666bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 267aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 268f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 2691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2706bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 2716bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2726bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 273fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 274fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 275183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 276183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 277fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 278fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 279fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 280aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 281fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 282fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 28318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CheckerState = (*I)->getState(); 2846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2856bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 2866bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 2876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 2886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2896bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 2906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 2916bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 2926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 2956bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 29818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CleanedCheckerSt = 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 300f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 301f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 30377d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 305dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 306031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 307dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 309dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 310dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 311ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 312ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 313dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 314dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 316e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 317846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 318846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3190a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 320e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 321e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 322d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 323056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 324ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 325ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3260a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 327cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 328056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 329056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 330056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 331056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 332d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 333d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 334056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3359dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 33600eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 337056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet AfterEval; 3389dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3399dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 340056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Visit(BMI->getInit(), Pred, AfterEval); 3419dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 342aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(AfterEval, Dst, *currentBuilderContext); 343056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = AfterEval.begin(), 344056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = AfterEval.end(); I != E; ++I){ 345056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *P = *I; 346056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = P->getState(); 3479dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 34800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3499dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 350d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3519dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu SVal InitVal = state->getSVal(BMI->getInit()); 3529dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 3539dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3549dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 355d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 3569dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 3579dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 358056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Bldr.generateNode(PP, P, state); 3599dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 360056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 361056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 362056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 363056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 364056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 365056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 366056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 367056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 368056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 369056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 370056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 371d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 373056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 374dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 375dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 376dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3779c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 3789c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 379d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 380ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 381ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 3823c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 3834ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 384056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 3854ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3864ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 387056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 3884ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3894ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 390056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 3914ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3924ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 3944ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3954ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 3964ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 3974ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 398ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 399dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 400dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4014ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4024ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 404056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 405056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 406056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = Pred->getState(); 407056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4082210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4092210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4102210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4112210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4122210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4132210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4142210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4152210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4162210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 417b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 419b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4202210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 424d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 425056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4264ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 427d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 428056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 430d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 431056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 432056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4339c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4349c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4356889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4360bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4370bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4380bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4396889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4406889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4410bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 442f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 443f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 444892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 445f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 446e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 447e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 448e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 450ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 451e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 453e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 454f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 455f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 4571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 4581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 4611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4639be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 464c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 465ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4671b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4686ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 46921ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 470552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 472c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 4736b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 474be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 475c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 47628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 47728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 478ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 479ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState()); 480ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 481c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 482c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 4835fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 4845fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 4855fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 48691a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 487ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 4885fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 4895fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 490f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 491f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 492f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 493f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 4951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 4961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 4971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 4981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 4991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 50046eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 503d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 505d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 510d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 511d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 512ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5168ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5178f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 51818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5198f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 520ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5218ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5228ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5238ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5244beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 525ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5264beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 527ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5284beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5294beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 53014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 531f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 53214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 53314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 534f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 53518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 536f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 537f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 538ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, val)); 539f85e193739c953358c865005855253af4f68a497John McCall break; 540f85e193739c953358c865005855253af4f68a497John McCall } 541f85e193739c953358c865005855253af4f68a497John McCall 542ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 543ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 544f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 545ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 546f85e193739c953358c865005855253af4f68a497John McCall break; 547f85e193739c953358c865005855253af4f68a497John McCall 5481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5531b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5541b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 555f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 565e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 56656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 56761eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 568276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 5691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 5701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 5721b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 573bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 574bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 575bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 576477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 577bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 578f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 579e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 580ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // No-op. Simply propagate the current state unchanged. 581e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 5821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 583540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 584ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 585892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 586ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 587540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 5881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 589e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 590ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 591e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 592ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 593e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 594b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 595892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 596ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 597892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 598892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 599ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 60067d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 601892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 603c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 604ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 605c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 606ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 607c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 608c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 609e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 61003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 611e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 612ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 613e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 614ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 615e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 616e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6172de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 61818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 619ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 620ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(B, state->getSVal(B->getRHS()))); 621e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 622e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 62306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 624ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 625ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 626b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 627bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 628031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 629892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6309c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 63148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 63248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 633892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 63448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 635ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 636e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 637e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 63806fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 639b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 640b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 641b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 642ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 643b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 644ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 64506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 646e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 64706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 648744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6497ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6507ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6517ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6527ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 653ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 654892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 655ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6567ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 6577ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 6587ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 659856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 660ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 66103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 662856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 663ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 664856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 665856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 666856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 6676b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 668ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 66903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 6706b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 671ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6726b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 6736b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 675e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 6761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 677e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 678ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 6799c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 680e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 681ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 682e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 683e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 685e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 686ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 687892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 688ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 689e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 690f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 691f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 692ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 693892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 694ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 695f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 69756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 698e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 699ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 70056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 70156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 70256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 703ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 704e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 705e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 707bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 708ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 709bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 710ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 711bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 712bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 713892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 714ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 715892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 716892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 717ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 718e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 719892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 721e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 722ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 723e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 725e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7270835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 7280d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 7290d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7300d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7310d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7320d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 733f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 734f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 735ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7369c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 737f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 738f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 739f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 740f85e193739c953358c865005855253af4f68a497John McCall 741f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 742f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 743f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 744f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 745f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 746f85e193739c953358c865005855253af4f68a497John McCall } 747f85e193739c953358c865005855253af4f68a497John McCall 748f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 749f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 750ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 751e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 752e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 753b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 75403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 75703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 75803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 759eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 76003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 76103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 762ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 76303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 76403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 76503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 766c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 767ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 768c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 769ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 770c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 7711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 774892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 775ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 776469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 777ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 77897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 780892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 781ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 78297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 783af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 784af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 785ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 786af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 787ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 788af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 7891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 79038ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 791ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7924410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 793ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 794e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 796bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 797bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 798bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 799ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 800bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 801bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 8021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8031b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 804ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8051b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 806ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8071b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8098ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 810ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8118ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 812ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 8148ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 815f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 816ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 817f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 818f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 820e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 822e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 8239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 824a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 825a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 826a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 827a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 828a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 829a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 830a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 8311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8329c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 83318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 834ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 835ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(SE, state->getSVal(LastExpr))); 836a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 837e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 838e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8396987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 840892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 84118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 842892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 843ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, V)); 844892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 845892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 846b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 84772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 848ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 850ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 851031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 852892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 8539c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 85472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 85572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 856892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 857ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8581b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 85972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 8601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 8611b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 8621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 863c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 864c03a39e16762627b421247b12a2658be630a3300Anna Zaksvoid ExprEngine::processCFGBlockEntrance(NodeBuilderWithSinks &nodeBuilder) { 86527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 86627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 867c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 86827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 869c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 870ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 871b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 87227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 873e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 874e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 875e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 876e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 877e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 878e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 87918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 8809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 88103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 8821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 88405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 885a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 8861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 89005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8922de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 8931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 89505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 89605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 89705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 89805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 8991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9009c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 9012de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 90203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 9031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9048e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 90505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 90756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 90805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 90956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 91056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 9111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 91305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 9141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9159c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 9161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 91856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 91905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 92056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 9211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9228e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 92305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 9261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9279c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 9281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9299c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 9308e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 93105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 93205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 93305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 93405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9366ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 940294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 941294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 942294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 943294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 9446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 94503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 9466ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 9476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 9506ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 9536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 9546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 9566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 9596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 9606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 9616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 9626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 9656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 9686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 9696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 9716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9731397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 9746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 9756ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9769c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 977a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 978ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 9791aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 980a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 981a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 982f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 983f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 984b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 9861aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 987a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 9884e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 989b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 990b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 9911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 99321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 99421028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 9950fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 996f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 997f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 9984e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 9998ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1000f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 10018ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 10021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1003f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1004f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1005f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1006cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1007cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1008cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1009cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1010cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 10114e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks const ProgramState *PrevState = Pred->getState(); 1012cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal X = PrevState->getSVal(Condition); 1013cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1014cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1015cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1016cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1017cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1018cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1019cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1020cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1021cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1022cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1023cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 1024cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1025cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1026cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1027cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1028cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10290835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1030b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 10310835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 10320835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 103373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 10344e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, true), true, PredI); 10354e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, false), false, PredI); 1036cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 10371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1039cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 10400835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1041cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1042cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 1043cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, true)) 10444e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, true), true, PredI); 1045cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1046cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1047cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1049cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1050cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 1051cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, false)) 10524e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, false), false, PredI); 1053cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1054cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1055cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1056cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1057f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1058f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1059f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1060e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1061754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1062ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1063754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 106418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10651397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 10661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1067754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1068754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1069754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 10704a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1071754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1072754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 10731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1074d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1075754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10761c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1077ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 10781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1079ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 108024f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1081a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1082754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1083754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1084754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1086b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1087754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1088754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10891c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1090754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 10912055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 10922055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 10932055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1094754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1095754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1097754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1098b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 10991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1100754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1101a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1102754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1103f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1104d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 110573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1106af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1107af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1108af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1109af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 11104d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 111173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 111273099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1113d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1114daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1115e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1116d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 111718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 11189c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 11191397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1120daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 11215b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 11222055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1123b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 11242055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 11252055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1126daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1127daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11285b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1129692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 113018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 113134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 113234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 113334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 11341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1136e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1137e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1138e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1139e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 11409c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 114172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 114272afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 114385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 114485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 11451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1146daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 114785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 114885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 114985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 115014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 115114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 11521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1153daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1154daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1155aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 11561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 115885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 11599c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 116048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1161b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 11621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 116318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1164a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 11651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1166daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1167daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1168daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 11691c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1170daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1171daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1173daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1174daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 117548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 117618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 117748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 117848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 117948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 118048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 118148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 118248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 118348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 11845014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1185b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 118614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 118785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 118814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 11891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 119185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 11921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1194daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11964d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 11974d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 12004d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 12014d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 12024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 12034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 12044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 12054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 12064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 12074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 12084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 12094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 12104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 12124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1214daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1215daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1216e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1217ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1218e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1219d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1220d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1221d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1222d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1223aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1224ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 122518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 12266d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 12279c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1228892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1229d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1230a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1231892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1232892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1233892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1234892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1235892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1236892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1237892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1238852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 12396d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1240ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1241ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1242852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1243892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12449c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1245892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1246c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 1247ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V)); 12486d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1249892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12509c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1251c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1252ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1253ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 12546d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 12551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 12566d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 12576d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 12583271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 12593271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1260540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 12619c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 12629c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 12639c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 12641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12659c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 12669c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1267892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12698f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 12708f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 12718f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1272aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1273ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 12748f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 12758f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 127618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 12778f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 12788f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 12798f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 1280ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, *it, state->BindExpr(A, V), 1281ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 12821b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1283540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1284540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1285469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 12869c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 12876889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 12881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12896889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 12906889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 12915bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 12925bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 12935bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1294ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 12955bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1296ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 12975bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 12985bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 12995bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 13005bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1301892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 130286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 130386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1304e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 130518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1306e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1307e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1308e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1309e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1310e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1311e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1312e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1313ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, UnknownVal())); 1314e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1315e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1316892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1317e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1318e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1319e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1320d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1321e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1322e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1323e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1324ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, L), false, 0, 1325ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1326ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1327ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1328e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1329ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1330ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1331469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1332469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 13339c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 13349c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 13359c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 133693bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 1337ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks SVal location, SVal Val, bool atDeclInit, 1338ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::Kind PointKind) { 1339b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1340b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1341fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1342fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1343ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks StoreE, *this, PointKind); 1344b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1345d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 13466b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1347aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 13486b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1349b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1350b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 135193bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1352a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1353b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1354b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1355b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1356f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1357fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1358fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1359fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1360f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 13611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1362ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(StoreE, *I, state, false, 0, PointKind); 1363b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1364ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13656b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1366a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1367a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 13689c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1369a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1370e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1371e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1372e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1373a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1374a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1375a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 13769c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 13779c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 13789c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 137918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1380ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 138114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 138214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 138314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 138414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 138514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 138614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 138714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 13884410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 138914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 139014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 13911b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1392b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 13939c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 13941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1395b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 13961b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1397b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 139873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 139973c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1400a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1401b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 1402ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false, 1403ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostStoreKind); 14041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14051b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 14069c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 14079c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 140818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1409ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1410cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 14111b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 141214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 141314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 141414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 14154410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 141614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 141714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1418852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1419852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1420852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 14219697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 14229697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1423b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1424018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1425852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1426ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1427ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1428852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 14299c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1430852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1431852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1432852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1433852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1434db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 14351397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 14369c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1437b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1438852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1439852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1440852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1441b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14429c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1443852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1444852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 14459c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 14469c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 144718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1448ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1449b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1451b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14529c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1453b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14541b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1455b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1456aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 145773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 145873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1459b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1461b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1462db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 146396ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1464b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1465b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1466ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1467ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1468b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1469b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 147096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 147196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 147296ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1473ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, location, V), 1474ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1475b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1476d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 14771b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14781b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1479d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 14809c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 148118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1482ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1483aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 148400b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1485769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1486b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1487b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1488b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14899c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1490ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1491aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1492ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1493eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1494eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1495eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1496eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1497eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1498eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1499eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1500eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1501ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1502ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1503ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1504ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1505ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 15060296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1507ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1509eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1510ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1511ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1512ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1513d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 15141c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1515b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1516b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1517b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1518b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1519b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1520b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1521b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1522b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1523b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 152418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 15251c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 15261c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 15271c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15281c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 15291c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 15301c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 15311c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1532b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1533b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1534b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1535b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1536b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1537b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1538b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1539b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 15405f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1541b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1542b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1543b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1544b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1545b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1546b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1547b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1548b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1549b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1550b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1551b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1552b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1553b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1554b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1555c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1556c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 155719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 15581d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AMgr.getStackFrame(AMgr.getAnalysisDeclContext(FD), 155919b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1560056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 1561c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 156219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1563c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1564c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1565c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1566c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1567c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 15681c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1569c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1570c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 15711d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *C = AMgr.getAnalysisDeclContextInAnotherTU(FD); 1572c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1573c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 157419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 157519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1576056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 157719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1578c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 15791c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1580c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1581c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1582b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1583b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1584c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1585c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1586b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 15871c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 15881c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15896c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 15906c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 15916c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 15926c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 15936c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 15946c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 15956c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 15966c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1597d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 15986800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1599aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 160086b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1601031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1602031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1603b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1604b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1605b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 16061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1607b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1608b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 16091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1610b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 161118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16121397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 16135b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 16146c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 16156c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 16166c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 161748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 16186c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 161986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 16206c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 1621ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 162248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 16231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 16256c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 162686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 16276c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 1628ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 162948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 163048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 163148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 163248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 163348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 16349c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 16359c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1636ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1638ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16399c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 164003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 164103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 16429c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1643ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1644ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1645ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1646ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1648031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1649892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1650ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1652bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1653ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1654ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1655ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16569c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 165703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 165803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 16599c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16609c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1661ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1662aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1663ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 16641c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 16651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1666ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1667ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1668ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 16691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1673ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16751397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 16761c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 16771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16781c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 16793ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1680ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1682ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, Pred, state); 1683ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1684ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1686031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1687ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 16881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1689ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1691e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1692ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1693ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1694ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1695094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1696094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1697e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1698ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1699ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1700aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1701d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1702e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 17033b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1704aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1705aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 170647491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1707aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1708006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1709006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1710006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1711d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1712ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 17139c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 17141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 171610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 171710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1718a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 17199dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 17204a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 17214a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 17224a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 17235e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 17242ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 17252ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1726a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 17271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17288cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 17298cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 17302055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1731a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1732a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 17331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17349c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 17351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173653ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 173753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1738803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1739803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1740aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 17411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1742aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1743aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 17441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1745aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1746aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1748aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1749aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1750aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1752102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1753102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1754102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1755102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1756102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1757102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1758102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1759102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1760aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 17615f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 17629c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 17638c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 17648c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1766e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1767e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 17681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 17708c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1771642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17727da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1773a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 17747da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 17758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17775f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 17781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 17795f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 17807090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 17817090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 17827090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 17837090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 17847090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 17851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 178710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 178810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 17898c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 17908c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 17918c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 17928c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 17938c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 17948c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 17958c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 17968c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 17978c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 17988c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 17998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 18008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 18018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 18028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 18038c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 18048c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 180510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 18061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 18088c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18098c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18109c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1811aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1812aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18149c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 18151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1816e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1818b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1819e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1820e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18229b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 18239b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1824642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18257da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1826a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 18279b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 18281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1829daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 18309c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 18311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 18339c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1834daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1835e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1836e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 18371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18389c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1839daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1840e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1841daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1843daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1844daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1845daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1846daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1847daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1848daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1849daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1851daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1852daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1853daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1854b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1855b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1856b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1857b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1858b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1859b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1860b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1862b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1864b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1865b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 186710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 186810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 186910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18704a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 18714a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 18723b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 187310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1874aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1875aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 18788673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 18798673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1880c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1881ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1882ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1883ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1884ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1885ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1886ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1887ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1888aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1889aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1890aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 18911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1892aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1893aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1894ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 18957ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 18969c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 18977ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1898031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1899031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1900031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 19017ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 19027ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1903ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1904ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1905d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 19061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1907ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1908031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1909940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1910940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1911940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1912940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1913940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1914940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1915940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1916404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1917404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1918404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1919404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1920404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1921404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1922940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 19231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19247ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1925ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1926493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1927493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1928493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1929ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1930d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1932493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1933493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1934493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1935493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1936493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1937493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1938d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1939493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1940493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1941493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 19421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1943031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1944493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1945cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 19466cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1947cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1948d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19503b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1951e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 1952e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 1953ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 1954