ExprEngine.cpp revision 4d2ae4a70336dc2aa11389b34946be152bb454c9
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, 4358ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks ExplodedNodeSet &Dst) { 4360bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4370bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4380bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 439aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 4400bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 441f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 442f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 443892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 444f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 445e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 446e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 447e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 449ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 450e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 452e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 453f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 454f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 4561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 4571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 4601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4629be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 463c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 464ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4676ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 46821ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 469552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 471c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 4726b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 473be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 474c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 47528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 47628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 477ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 478ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState()); 479ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 480c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 481c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 4825fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 4835fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 4845fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 48591a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 486ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 4875fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 4885fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 489f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 490f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 491f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 492f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 4931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 4951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 4961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 4971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 4981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 49946eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 502d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 504d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 509d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 510d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 511ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5158ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5168f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 51718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5188f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 519ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5208ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5218ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5228ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5234beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 524ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5254beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 526ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5274beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5284beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 52914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 530f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 53114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 53214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 533f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 53418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 535f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 536f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 537ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, val)); 538f85e193739c953358c865005855253af4f68a497John McCall break; 539f85e193739c953358c865005855253af4f68a497John McCall } 540f85e193739c953358c865005855253af4f68a497John McCall 541ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 542ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 543f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 544ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 545f85e193739c953358c865005855253af4f68a497John McCall break; 546f85e193739c953358c865005855253af4f68a497John McCall 5471b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5531b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 554f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 564e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 56556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 56661eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 567276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 5681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 5691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 572bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 573bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 574bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 575477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 576bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 577f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 578e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 579ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // No-op. Simply propagate the current state unchanged. 580e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 5811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 582540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 583ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 584892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 585ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 586540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 5871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 588e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 589ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 590e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 591ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 592e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 593b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 594892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 595ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 596892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 597892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 598ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 59967d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 600892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 602c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 603ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 604c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 605ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 606c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 607c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 608e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 60903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 610e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 611ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 612e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 613ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 614e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 615e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6162de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 61718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 618ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 619ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(B, state->getSVal(B->getRHS()))); 620e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 621e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 62206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 623ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 624ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 625b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 626bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 627031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 628892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6299c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 63048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 63148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 632892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 63348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 634ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 635e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 636e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 63706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 638b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 639b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 640b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 641ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 642b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 643ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 64406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 645e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 64606fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 647744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6487ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6497ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6507ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6517ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 652ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 653892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 654ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6557ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 6567ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 6577ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 658856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 659ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 66003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 661856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 662ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 663856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 664856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 665856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 6666b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 667ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 66803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 6696b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 670ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 6716b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 6726b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 673e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 6751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 676e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 677ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 6789c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 679e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 680ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 681e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 682e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 684e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 685ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 686892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 687ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 688e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 689f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 690f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 691ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 692892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 694f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 69656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 697e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 698ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 69956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 70056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 70156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 702ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 703e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 704e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 706bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 707ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 708bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 709ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 710bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 711bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 712892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 713ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 714892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 715892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 716ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 717e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 718892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 720e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 721ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 722e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 723ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 724e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7260835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 7270d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 7280d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7290d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7300d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7310d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 732f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 733f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 734ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7359c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 736f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 737f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 738f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 739f85e193739c953358c865005855253af4f68a497John McCall 740f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 741f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 742f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 743f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 744f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 745f85e193739c953358c865005855253af4f68a497John McCall } 746f85e193739c953358c865005855253af4f68a497John McCall 747f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 748f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 749ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 750e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 751e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 752b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 75303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 754ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 75603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 75703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 758eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 75903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 76003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 761ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 76203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 76303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 76403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 765c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 766ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 767c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 768ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 769c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 7701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77197ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 773892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 775469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 776ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 77797ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 778ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 779892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 780ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 78197ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 782af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 783af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 784ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 785af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 786ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 787af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 7881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78938ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 790ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7914410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 792ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 793e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 795bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 796bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 797bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 798ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 799bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 800bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 8011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8021b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 803ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 805ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8061b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8088ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 809ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8108ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 811ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 8138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 814f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 815ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 816f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 817f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 818ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 819e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 821e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 8229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 823a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 824a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 825a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 826a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 827a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 828a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 829a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 8301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8319c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 83218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 833ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 834ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(SE, state->getSVal(LastExpr))); 835a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 836e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 837e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8386987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 839892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 84018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 841892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 842ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, V)); 843892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 844892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 845b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 84672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 847ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 849ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 850031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 851892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 8529c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 85372374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 85472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 855892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 856ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8571b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 85872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 8591b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 8601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 8611b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 862c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 863c03a39e16762627b421247b12a2658be630a3300Anna Zaksvoid ExprEngine::processCFGBlockEntrance(NodeBuilderWithSinks &nodeBuilder) { 86427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 86527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 866c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 86727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 868c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 869ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 870b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 87127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 872e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 873e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 874e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 875e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 876e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 877e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 87818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 8799c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 88003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 88305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 884a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 8851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 8871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 88905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 8901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8912de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 8921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 89405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 89505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 89605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 89705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 8981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8999c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 9002de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 90103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 9021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9038e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 90405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 90656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 90705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 90856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 90956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 9101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 91205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 9131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9149c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 9151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 91756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 91805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 91956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 9201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9218e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 92205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 9251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9269c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 9271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 9298e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 93005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 93105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 93205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 93305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9366ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 939294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 940294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 941294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 942294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 9436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 94403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 9456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 9466ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 9496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 9501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 9526ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 9536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 9556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 9586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 9596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 9606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 9616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 9646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 9676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 9686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 9706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9721397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 9736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 9746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9759c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 976a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 977ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 9781aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 979a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 980a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 981f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 982f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 983b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 9841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 9851aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 986a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 9874e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 988b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 989b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 9901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99121028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 99221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 99321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 9940fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 995f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 996f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 9974e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 9988ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 999f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 10008ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 10011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1002f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1003f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1004f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1005cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1006cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1007cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1008cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1009cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 10104e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks const ProgramState *PrevState = Pred->getState(); 1011cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal X = PrevState->getSVal(Condition); 1012cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1013cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1014cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1015cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1016cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1017cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1018cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1019cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1020cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1021cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1022cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 1023cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1024cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1025cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1026cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1027cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10280835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1029b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 10300835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 10310835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 103273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 10334e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, true), true, PredI); 10344e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, false), false, PredI); 1035cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 10361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1038cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 10390835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1040cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1041cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 1042cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, true)) 10434e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, true), true, PredI); 1044cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1045cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1046cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1048cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1049cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 1050cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, false)) 10514e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, false), false, PredI); 1052cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1053cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1054cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1055cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1056f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1057f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1058f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1059e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1060754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1061ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1062754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 106318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10641397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 10651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1066754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1067754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1068754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 10694a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1070754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1071754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 10721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1073d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1074754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10751c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1076ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 10771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1078ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 107924f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1080a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1081754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1082754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1083754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1085b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1086754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1087754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10881c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1089754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 10902055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 10912055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 10922055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1093754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1094754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1096754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1097b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 10981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1099754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1100a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1101754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1102f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1103d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 110473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1105af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1106af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1107af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1108af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 11094d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 111073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 111173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1112d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1113daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1114e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1115d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 111618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 11179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 11181397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1119daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 11205b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 11212055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1122b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 11232055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 11242055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1125daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1126daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11275b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1128692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 112918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 113034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 113134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 113234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 11331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1135e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1136e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1137e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1138e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 11399c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 114072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 114172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 114285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 114385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 11441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1145daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 114685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 114785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 114885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 114914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 115014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 11511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1152daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1153daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1154aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 11551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 115785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 11589c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 115948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1160b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 11611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 116218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1163a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 11641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1165daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1166daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1167daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 11681c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1169daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1170daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1172daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1173daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 117448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 117518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 117648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 117748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 117848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 117948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 118048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 118148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 118248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 11835014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1184b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 118514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 118685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 118714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 119085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 11911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1193daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11954d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 11964d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11974d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 11994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 12004d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 12014d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 12024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 12034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 12044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 12054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 12064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 12074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 12084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 12094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 12114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1213daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1214daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1215e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1216ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1217e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1218d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1219d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1220d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1221d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1222aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1223ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 122418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 12256d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 12269c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1227892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1228d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1229a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1230892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1231892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1232892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1233892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1234892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1235892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1236892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1237852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 12386d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1239ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1240ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1241852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1242892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12439c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1244892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1245c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 1246ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V)); 12476d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1248892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12499c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1250c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1251ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1252ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 12536d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 12541b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 12556d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 12566d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 12573271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 12583271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1259540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 12609c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 12619c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 12629c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 12631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12649c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 12659c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1266892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 12671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12688f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 12698f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 12708f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1271aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1272ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 12738f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 12748f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 127518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 12768f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 12778f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 12788f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 1279ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, *it, state->BindExpr(A, V), 1280ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 12811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1282540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1283540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1284469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 12859c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 12869c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 12871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1288aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 12895bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 12905bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 12915bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1292ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 12935bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1294ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 12955bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 12965bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 12975bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 12985bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1299892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 130086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 130186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1302e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 130318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1304e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1305e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1306e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1307e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1308e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1309e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1310e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1311ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, UnknownVal())); 1312e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1313e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1314892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1315e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1316e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1317e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1318d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1319e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1320e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1321e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1322ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, L), false, 0, 1323ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1324ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1325ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1326e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1327ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1328ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1329469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1330469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 13319c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 13329c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 13339c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 133493bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 1335ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks SVal location, SVal Val, bool atDeclInit, 1336ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::Kind PointKind) { 1337b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1338b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1339fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1340fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1341ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks StoreE, *this, PointKind); 1342b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1343d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 13446b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1345aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 13466b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1347b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1348b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 134993bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1350a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1351b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1352b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1353b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1354f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1355fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1356fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1357fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1358f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 13591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1360ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(StoreE, *I, state, false, 0, PointKind); 1361b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1362ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13636b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1364a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1365a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 13669c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1367a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1368e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1369e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1370e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1371a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1372a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1373a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 13749c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 13759c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 13769c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 137718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1378ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 137914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 138014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 138114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 138214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 138314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 138414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 138514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 13864410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 138714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 138814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 13891b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1390b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 13919c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 13921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1393b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 13941b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1395b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 139673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 139773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1398a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1399b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 1400ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false, 1401ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostStoreKind); 14021b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14031b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 14049c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 14059c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 140618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1407ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1408cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 14091b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 141014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 141114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 141214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 14134410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 141414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 141514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1416852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1417852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1418852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 14199697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 14209697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1421b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1422018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1423852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1424ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1425ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1426852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 14279c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1428852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1429852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1430852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1431852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1432db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 14331397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 14349c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1435b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1436852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1437852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1438852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1439b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14409c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1441852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1442852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 14439c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 14449c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 144518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1446ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1447b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1449b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14509c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1451b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14521b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1453b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1454aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 145573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 145673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1457b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14581b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1459b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1460db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 146196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1462b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1463b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1464ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1465ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1466b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1467b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 146896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 146996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 147096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1471ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, location, V), 1472ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1473b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1474d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 14751b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14761b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1477d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 14789c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 147918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1480ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1481aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 148200b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1483769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1484b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1485b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1486b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14879c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1488ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1489aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1490ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1491eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1492eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1493eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1494eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1495eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1496eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1497eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1498eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1499ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1500ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1501ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1502ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1503ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 15040296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1505ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1506ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1507eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1509ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1510ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1511d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 15121c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1513b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1514b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1515b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1516b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1517b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1518b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1519b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1520b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1521b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 152218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 15231c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 15241c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 15251c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15261c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 15271c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 15281c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 15291c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1530b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1531b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1532b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1533b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1534b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1535b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1536b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1537b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 15385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1539b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1540b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1541b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1542b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1543b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1544b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1545b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1546b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1547b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1548b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1549b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1550b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1551b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1552b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1553c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1554c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 155519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 15561d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AMgr.getStackFrame(AMgr.getAnalysisDeclContext(FD), 155719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1558056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 1559c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 156019b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1561c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1562c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1563c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1564c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1565c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 15661c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1567c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1568c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 15691d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *C = AMgr.getAnalysisDeclContextInAnotherTU(FD); 1570c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1571c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 157219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 157319b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1574056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 157519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1576c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 15771c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1578c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1579c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1580b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1581b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1582c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1583c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1584b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 15851c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 15861c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15876c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 15886c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 15896c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 15906c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 15916c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 15926c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 15936c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 15946c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1595d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 159603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex) { 1597aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 159886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1599031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1600031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1601b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1602b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1603b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 16041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1605b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1606b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 16071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1608b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 160918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16101397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 16115b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 16126c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 16136c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 16146c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 161548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 16166c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 161786b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 16186c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 1619ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 162048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 16211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 16236c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 162486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 16256c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 1626ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 162748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 162848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 162948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 163048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 163148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 16329c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 16339c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1634ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 16351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1636ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16379c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 163803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 163903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 16409c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1641ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1642ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1643ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1644ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1646031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1647892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1648ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1650bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1651ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1652ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1653ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16549c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 165503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 165603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 16579c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16589c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1659ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1660aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1661ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 16621c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 16631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1664ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1665ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1666ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 16671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1671ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 16721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16731397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 16741c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 16751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16761c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 16773ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1678ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1680ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, Pred, state); 1681ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1682ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1684031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1685ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 16861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1687ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1689e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1690ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1691ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1692ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1693094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1694094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1695e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1696ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1697ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1698aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1699d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1700e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 17013b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1702aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1703aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 170447491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1705aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1706006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1707006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1708006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1709d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1710ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 17119c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 17121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 171410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 171510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1716a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 17179dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 17184a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 17194a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 17204a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 17215e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 17222ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 17232ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1724a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 17251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17268cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 17278cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 17282055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1729a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1730a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 17311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17329c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 17331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 173553ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1736803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1737803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1738aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 17391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1740aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1741aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 17421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1743aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1744aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1746aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1747aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1748aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1750102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1751102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1752102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1753102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1754102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1755102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1756102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1757102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1758aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 17595f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 17609c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 17618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 17628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1764e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1765e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 17661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 17688c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1769642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17707da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1771a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 17727da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 17738c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17755f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 17761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 17775f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 17787090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 17797090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 17807090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 17817090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 17827090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 178510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 178610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 17878c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 17888c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 17898c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 17908c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 17918c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 17928c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 17938c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 17948c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 17958c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 17968c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 17978c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 17988c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 17998c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 18008c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 18018c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 18028c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 180310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 18041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18058c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 18068c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18078c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18089c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1809aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1810aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 18111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18129c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1814e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 18151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1816b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1817e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1818e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 18191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18209b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 18219b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1822642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18237da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1824a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 18259b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 18261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1827daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 18289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 18291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 18319c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1832daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1833e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1834e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 18351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18369c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1837daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1838e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1839daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1841daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1842daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1843daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1844daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1845daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1846daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1847daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1849daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1850daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1851daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1852b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1853b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1854b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1855b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1856b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1857b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1858b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 18591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1860b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1862b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1863b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 186510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 186610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 186710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18684a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 18694a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 18703b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 187110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1872aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1873aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 18741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 18768673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 18778673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1878c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1879ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1880ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1881ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1882ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1883ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1884ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1885ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1886aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1887aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1888aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 18891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1890aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1891aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1892ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 18937ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 18949c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 18957ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1896031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1897031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1898031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 18997ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 19007ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1901ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1902ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1903d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 19041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1905ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1906031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1907940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1908940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1909940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1910940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1911940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1912940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1913940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1914404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1915404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1916404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1917404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1918404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1919404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1920940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 19211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19227ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1923ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1924493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1925493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1926493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1927ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1928d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 19291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1930493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1931493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1932493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1933493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1934493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1935493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1936d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1937493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1938493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1939493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 19401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1941031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1942493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1943cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 19446cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1945cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1946d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19483b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1949e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 1950e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 1951ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 1952