ExprEngine.cpp revision dbd658e139b3e0bf084f75feaea8d844af9e319f
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" 209b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngineBuilders.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 53d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::ExprEngine(AnalysisManager &mgr, TransferFuncs *tf) 5425e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 55d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis Engine(*this), 56d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 5750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek Builder(NULL), 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()), 630a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek EntryNode(NULL), currentStmt(NULL), 64a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 65c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 6632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek BR(mgr, *this), TF(tf) { 67b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 6832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek // FIXME: Eventually remove the TF object entirely. 6932a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek TF->RegisterChecks(*this); 70d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 71d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 72d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 73d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 74d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 75c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 7650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 77d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 78cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 79e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 8050a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8150a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 82e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 83e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 84e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 85e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 8618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::getInitialState(const LocationContext *InitLoc) { 8718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = StateMgr.getInitialState(InitLoc); 881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 90cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek 9152e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9252e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 935974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 94b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek const Decl *D = InitLoc->getDecl(); 955974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 965974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 975974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 985974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 106b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 110b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1111397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1129c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 113c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1175974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 118b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 121b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *newState = state->assume(*Constraint, true)) 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 124b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 12652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 1275974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 128b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // method. 1315974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 1325974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 1331397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 134b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1355974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 1365974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Assume that the pointer value in 'self' is non-null. 13728f47b92e760ccf641ac91cb0fe1c12d9ca89795Ted Kremenek state = state->assume(*LV, true); 1385974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek assert(state && "'self' cannot be null"); 1395974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 140cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 1415974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } while (0); 142b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14352e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 144e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 145e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 146e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenekbool 147e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed KremenekExprEngine::doesInvalidateGlobals(const CallOrObjCMessage &callOrMessage) const 148e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek{ 149e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (callOrMessage.isFunctionCall() && !callOrMessage.isCXXCall()) { 150e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek SVal calleeV = callOrMessage.getFunctionCallee(); 151e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const FunctionTextRegion *codeR = 1525f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<FunctionTextRegion>(calleeV.getAsRegion())) { 153e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 154e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek const FunctionDecl *fd = codeR->getDecl(); 155e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const IdentifierInfo *ii = fd->getIdentifier()) { 1565f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fname = ii->getName(); 157e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (fname == "strlen") 158e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return false; 159e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 160e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 161e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 162e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 163e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek // The conservative answer: invalidates globals. 164e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return true; 165e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek} 166e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 167e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 168e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 169e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 170e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1719c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 173294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekconst ProgramState *ExprEngine::processAssume(const ProgramState *state, 174fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 175fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 17818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(const ProgramState *state) { 179183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 180c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 181c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 18218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState * 18318c66fdc3c4008d335885695fe36fb5353c5f672Ted KremenekExprEngine::processRegionChanges(const ProgramState *state, 18435bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 185537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 186537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Regions) { 18735bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 188537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose Explicits, Regions); 189c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 190c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 191dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rosevoid ExprEngine::printState(raw_ostream &Out, const ProgramState *State, 192dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 193dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 194dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 195dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 196e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 19730726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 198ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 199ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 200e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processCFGElement(const CFGElement E, 201d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder& builder) { 2029c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2033c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 206f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), builder); 2073c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), builder); 2103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), builder); 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2179c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2189c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2199c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 220d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessStmt(const CFGStmt S, StmtNodeBuilder& builder) { 2216bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Use RAII to remove the unnecessary, tagged nodes. 2226bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks //RegisterCreatedNodes registerCreatedNodes(getGraph()); 2236bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 224d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 225d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.reclaimRecentlyAllocatedNodes(); 22618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek // Recycle any unused states in the ProgramStateManager. 227e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek StateMgr.recycleUnusedStates(); 228e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek 2290a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2300bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2310a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2320bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 235ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 236e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Builder = &builder; 237b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek EntryNode = builder.getPredecessor(); 2381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *EntryState = EntryNode->getState(); 2406bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks ExplodedNode *CleanedNode = 0; 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 247bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose if (AMgr.shouldPurgeDead()) { 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; 2606bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2616bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2626bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2636bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 2646bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedNode = 265ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Builder->generateNode(currentStmt, CleanedState, EntryNode, &cleanupTag); 2666bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks Tmp.Add(CleanedNode); 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2686bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 26977d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 270b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek SaveOr OldHasGen(Builder->hasGeneratedNode); 271846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek 272331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek SaveAndRestore<bool> OldPurgeDeadSymbols(Builder->PurgingDeadSymbols); 273331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek Builder->PurgingDeadSymbols = true; 2741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2756bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2766bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 277fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 278fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 279183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 280183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 281fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 282fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 283fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 284fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 285fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 28618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CheckerState = (*I)->getState(); 2876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 2896bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 2906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 2916bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 2956bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3006bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 30118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CleanedCheckerSt = 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 3036bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks ExplodedNode *CleanedNode = Builder->generateNode(currentStmt, 3046bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedCheckerSt, *I, 305ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek &cleanupTag); 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks Tmp.Add(CleanedNode); 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 30877d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 310031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Remove Dest set, it's no longer needed. 312031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Dst; 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 3140a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek Visit(currentStmt, *I, Dst); 31577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 317e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 318846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 319846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3200a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 321e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Builder = NULL; 322e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 323e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 324d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 325d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 3260a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 327cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 3289dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 329d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu ExplodedNode *pred = builder.getPredecessor(); 330d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 331d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const StackFrameContext *stackFrame = cast<StackFrameContext>(pred->getLocationContext()); 332d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXConstructorDecl *decl = cast<CXXConstructorDecl>(stackFrame->getDecl()); 333d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 334d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 335d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal thisVal = pred->getState()->getSVal(thisReg); 3369dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 33700eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3389dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu ExplodedNodeSet Dst; 3399dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3409dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 341d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu Visit(BMI->getInit(), pred, Dst); 3429dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3439dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu for (ExplodedNodeSet::iterator I = Dst.begin(), E = Dst.end(); I != E; ++I){ 3449dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu ExplodedNode *Pred = *I; 34518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 3469dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 34700eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3489dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 349d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3509dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu SVal InitVal = state->getSVal(BMI->getInit()); 3519dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 3529dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3539dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 354d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 3559dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 3569dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 3579dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu builder.generateNode(PP, state, Pred); 3589dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 359d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu return; 3609dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 361d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 362d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu assert(BMI->isBaseInitializer()); 363d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 364d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu // Get the base class declaration. 365d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 366d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 367d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu // Create the base object region. 368d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal baseVal = 369d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 370d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const MemRegion *baseReg = baseVal.getAsRegion(); 371d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu assert(baseReg); 372d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu Builder = &builder; 373d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu ExplodedNodeSet dst; 374d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu VisitCXXConstructExpr(ctorExpr, baseReg, pred, dst); 3759c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 3769c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 377d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 378d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 379b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu Builder = &builder; 380b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 3813c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 3824ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 3834ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), builder); 3844ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3854ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 3864ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessBaseDtor(cast<CFGBaseDtor>(D), builder); 3874ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3884ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 3894ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessMemberDtor(cast<CFGMemberDtor>(D), builder); 3904ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3914ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 3924ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), builder); 3934ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3944ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 3954ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 3964ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 3974ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 3984ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 399d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor dtor, 400d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 401b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek ExplodedNode *pred = builder.getPredecessor(); 40218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = pred->getState(); 4032210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const VarDecl *varDecl = dtor.getVarDecl(); 4042210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4052210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4062210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4072210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4082210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4092210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4102210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4112210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4122210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 413b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4142210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu Loc dest = state->getLValue(varDecl, pred->getLocationContext()); 415b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4162210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu ExplodedNodeSet dstSet; 4172210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 4182210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu dtor.getTriggerStmt(), pred, dstSet); 4194ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 421d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 422d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 425d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 426d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 429d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 430d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4319c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4329c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4339c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4349c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 4350bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4360bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4370bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4380bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 439f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 440f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 441892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 442f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 443e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 444e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 445e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4470a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) { 448e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); 449e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 450e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 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: 458ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith case Stmt::CXXForRangeStmtClass: 4591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 460c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 4611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 4621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4649be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 465c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 466ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4671b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4696ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 47021ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 471552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4721b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 473c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 4746b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 475be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 476c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 47728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 47828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 47928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHFinallyStmtClass: 4801b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek { 481c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 482c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek Builder->BuildSinks = true; 483db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks const ExplodedNode *node = MakeNode(Dst, S, Pred, Pred->getState()); 484422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek Engine.addAbortedBlock(node, Builder->getBlock()); 485c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 486c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 4875fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 4885fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 4895fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 49091a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 4915fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek case Stmt::CXXDefaultArgExprClass: { 4925fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek Dst.Add(Pred); 4935fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 4945fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek } 4955fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 496f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 497f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 498f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 499f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 508d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 510d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 515d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 516d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 5171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5191b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5208ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5218f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 52218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5238f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 5248f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose MakeNode(Dst, S, Pred, state); 5258ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5268ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5278ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5284beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 5294beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 5304beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5314beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 53214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 533f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 534f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek Dst.Add(Pred); 53514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 53614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 537f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 53818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 539f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 540f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 541f85e193739c953358c865005855253af4f68a497John McCall MakeNode(Dst, S, Pred, state->BindExpr(S, val)); 542f85e193739c953358c865005855253af4f68a497John McCall break; 543f85e193739c953358c865005855253af4f68a497John McCall } 544f85e193739c953358c865005855253af4f68a497John McCall 545f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ExprWithCleanupsClass: { 546f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 547f85e193739c953358c865005855253af4f68a497John McCall break; 548f85e193739c953358c865005855253af4f68a497John McCall } 549f85e193739c953358c865005855253af4f68a497John McCall 5501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5531b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5541b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 557f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 567e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 56856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 56961eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 5701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5721b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 5731b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 574bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 575bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 576bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 577477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 578bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 579f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 580e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 581e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); // No-op. Simply propagate the current state unchanged. 582e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 5831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 584540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 585892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 586540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 5871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 588e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 589e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 590e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 591b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 592892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 593892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 594892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 59567d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 596892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 5971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 598c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 599c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 600c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 601c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 602e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 60303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 604e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 605e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 606e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 607e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6082de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 60918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 6101397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek MakeNode(Dst, B, Pred, state->BindExpr(B, state->getSVal(B->getRHS()))); 611e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 612e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 61306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 614b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 615bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 616031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 617892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6189c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 61948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 62048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 621892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 62248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 623e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 624e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 62506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 626b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 627b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 628b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 629b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 63006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 631e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 63206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 6337ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6347ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6357ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6367ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 637892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 6387ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 6397ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 6407ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 641856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 64203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 643856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 644856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 645856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 646856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 6476b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 64803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 6496b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 6506b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 6516b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 652e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 653e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 6541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 655e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 6569c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 657e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 658e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 659e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 661e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 662892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 663e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 664f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 665f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 666892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 667f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 6681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 66956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 670e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 67156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 67256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 67356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 675e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 677bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 678bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 679bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 680bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 681892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 682892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 683892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 684e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 685892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 687e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 688e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 689e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 6901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6910835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 6920d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 6930d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 6940d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 6950d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 6960d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 697f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 698f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 6999c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 700f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 701f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 702f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 703f85e193739c953358c865005855253af4f68a497John McCall 704f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 705f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 706f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 707f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 708f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 709f85e193739c953358c865005855253af4f68a497John McCall } 710f85e193739c953358c865005855253af4f68a497John McCall 711f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 712f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 713e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 714e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 715b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 71603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 71703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 71803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 71903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 720eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 72103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 72203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 72303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 72403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 72503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 726c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 727c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 728c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 7291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 73097ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 731892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 732469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 73397ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 734892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 73597ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 736af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 737af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 738af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 739af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74138ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 7424410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 743e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 745bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 746bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 747bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 748bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 749bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek Builder->BuildSinks = true; 750db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks MakeNode(Dst, S, Pred, Pred->getState()); 751bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 752bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 7531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7541b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 7551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 7561b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 7571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7588ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 7598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 7608ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 7618ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 762f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 763f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 764f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 765e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 767e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 7689c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 769a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 770a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 771a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 772a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 773a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 774a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek Dst.Add(Pred); 775a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 776a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 7771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7789c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 77918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 7801397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek MakeNode(Dst, SE, Pred, state->BindExpr(SE, state->getSVal(LastExpr))); 781a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 782e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek else 783e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); 7841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 785e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 786e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7876987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 788892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 78918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 790892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 791892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek MakeNode(Dst, S, Pred, state->BindExpr(S, V)); 792892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 793892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 794b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 79572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 79603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 7972de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (AMgr.shouldEagerlyAssume()&&(U->getOpcode() == UO_LNot)) { 798031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 799892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 8009c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 80172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 80272374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 803892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 8041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 80572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 8061b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 8071b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 8081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 809e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 810e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Block entrance. (Update counters). 811e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 812e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 81327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekvoid ExprEngine::processCFGBlockEntrance(ExplodedNodeSet &dstNodes, 81427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek GenericNodeBuilder<BlockEntrance> &nodeBuilder){ 81527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 81627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 81727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek const CFGBlock *block = nodeBuilder.getProgramPoint().getBlock(); 81827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ExplodedNode *pred = nodeBuilder.getPredecessor(); 81927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 82027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek if (nodeBuilder.getBlockCounter().getNumVisited( 82127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek pred->getLocationContext()->getCurrentStackFrame(), 82227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek block->getBlockID()) >= AMgr.getMaxVisit()) { 823ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 824b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 82527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 826e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 827e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 828e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 8291670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek// Generic node creation. 8301670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek//===----------------------------------------------------------------------===// 8311670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek 8329c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *ExprEngine::MakeNode(ExplodedNodeSet &Dst, const Stmt *S, 83318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, const ProgramState *St, 834ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek ProgramPoint::Kind K, 835ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 836d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis assert (Builder && "StmtNodeBuilder not present."); 837ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek SaveAndRestore<const ProgramPointTag*> OldTag(Builder->Tag); 8381670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek Builder->Tag = tag; 8391670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek return Builder->MakeNode(Dst, S, Pred, St, K); 8401670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek} 8411670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek 8421670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek//===----------------------------------------------------------------------===// 843e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 844e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 845e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 84618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 8479c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 84803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 8491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 85105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 852a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 8531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 85705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 8581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8592de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 8601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 86205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 86305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 86405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 86505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 8661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8679c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 8682de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 86903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 8701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8718e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 87205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 8731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 87505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 87656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 87756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 8781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 88005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8829c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 88556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 88605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 88756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8898e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 89005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 8931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8949c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 8951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8969c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 8978e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 89805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 89905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 90005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 90105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9026ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9036ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9046ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9056ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9066ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 907294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 908294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 909294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 910294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 9116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 91203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 9136ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 9146ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9156ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9166ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 9176ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 9206ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 9216ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 9236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9256ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 9266ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 9276ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 9286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 9296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 9326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 9356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 9366ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 9386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9401397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 9416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 9426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9439c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 944d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis BranchNodeBuilder& builder) { 9451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 946b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 9471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 948b2331834a0515c80862ee51325c758a053829f15Ted Kremenek builder.markInfeasible(false); 949b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 950b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95221028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 95321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 95421028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 9550fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 956cc05d511b26ac6dc80fcbcc78ac305d2755aa0b9Argyrios Kyrtzidis getCheckerManager().runCheckersForBranchCondition(Condition, builder, *this); 957cc05d511b26ac6dc80fcbcc78ac305d2755aa0b9Argyrios Kyrtzidis 9580835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the branch condition is undefined, return; 9590835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu if (!builder.isFeasible(true) && !builder.isFeasible(false)) 9600835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu return; 9611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *PrevState = builder.getState(); 9631397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = PrevState->getSVal(Condition); 964b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek 96573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 9660835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // Give it a chance to recover from unknown. 9670835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 9680835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu if (Ex->getType()->isIntegerType()) { 9690835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // Try to recover some path-sensitivity. Right now casts of symbolic 9700835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // integers that promote their values are currently not tracked well. 9710835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If 'Condition' is such an expression, try and recover the 9720835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // underlying value and use that instead. 9730835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu SVal recovered = RecoverCastedSymbol(getStateManager(), 9740835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu builder.getState(), Condition, 9750835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu getContext()); 976b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 9770835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu if (!recovered.isUnknown()) { 9780835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu X = recovered; 9790835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 980b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 9810835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 9820835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 98373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 9840835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu builder.generateNode(MarkBranch(PrevState, Term, true), true); 9850835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu builder.generateNode(MarkBranch(PrevState, Term, false), false); 986b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek return; 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 988b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 9891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9900835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu DefinedSVal V = cast<DefinedSVal>(X); 9910835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 9926a6719a3a11087b48d9f1a4eb08b3bd43cb05a65Ted Kremenek // Process the true branch. 993520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek if (builder.isFeasible(true)) { 99418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *state = PrevState->assume(V, true)) 995520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek builder.generateNode(MarkBranch(state, Term, true), true); 996520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek else 997520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek builder.markInfeasible(true); 998520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek } 9991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Process the false branch. 1001520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek if (builder.isFeasible(false)) { 100218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *state = PrevState->assume(V, false)) 1003520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek builder.generateNode(MarkBranch(state, Term, false), false); 1004520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek else 1005520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek builder.markInfeasible(false); 1006520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek } 1007f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1008f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1009e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1010754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1011ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1012754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 101318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10141397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 10151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1016754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1017754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1018754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 10194a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1020754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1021754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 10221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1023d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1024754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10251c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1026ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 10271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1028ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 102924f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1030a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1031754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1032754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1033754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1035ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner assert(false && "No block with label."); 1036754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1037754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1038754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10391c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1040754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 10412055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 10422055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 10432055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1044754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1045754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1047754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1048b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 10491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1050754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1051a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1052754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1053f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1054d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 105573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1056e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndOfFunction(EndOfFunctionNodeBuilder& builder) { 105773099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek StateMgr.EndPath(builder.getState()); 1058af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis getCheckerManager().runCheckersForEndPath(builder, *this); 105973099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 106073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1061d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1062daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1063e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1064d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 106518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10669c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 10671397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1068daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 10695b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 10702055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1071b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 10722055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 10732055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1074daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1075daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 10765b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1077692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 107818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 107934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 108034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 108134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 10821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1084e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1085e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1086e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1087e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 10889c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 108972afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 109072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 109172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek Expr::EvalResult V1; 10921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool b = Case->getLHS()->Evaluate(V1, getContext()); 10931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Sanity checks. These go away in Release builds. 10951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(b && V1.Val.isInt() && !V1.HasSideEffects 109672afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek && "Case condition must evaluate to an integer constant."); 1097c6ed729f669044f5072a49d79041f455d971ece3Jeffrey Yasskin (void)b; // silence unused variable warning 10981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(V1.Val.getInt().getBitWidth() == 109972afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek getContext().getTypeSize(CondE->getType())); 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1101daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 110272afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek Expr::EvalResult V2; 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11049c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Expr *E = Case->getRHS()) { 110572afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek b = E->Evaluate(V2, getContext()); 11061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(b && V2.Val.isInt() && !V2.HasSideEffects 110772afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek && "Case condition must evaluate to an integer constant."); 1108c6ed729f669044f5072a49d79041f455d971ece3Jeffrey Yasskin (void)b; // silence unused variable warning 1109daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 111014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 111114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 11121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1113daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1114daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1115aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 11161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1.Val.getInt())); 11199c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 112048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1121b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 11221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 112318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1124a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 11251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1126daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1127daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1128daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 11291c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1130daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1131daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1133daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1134daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 113548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 113618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 113748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 113848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 113948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 114048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 114148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 114248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 114348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 11445014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1145b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 114614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 114772afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek if (V1.Val.getInt() == V2.Val.getInt()) 114814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 11491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek ++V1.Val.getInt(); 115172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek assert (V1.Val.getInt() <= V2.Val.getInt()); 11521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1154daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11564d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 11574d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11584d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11594d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 11604d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 11614d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 11624d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 11634d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 11644d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 11654d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 11664d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 11674d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 11684d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 11694d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 11704d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11714d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 11724d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11734d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1174daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1175daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1176e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1177ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1178e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1179d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1180d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1181d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1182d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 118318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 11846d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 11859c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1186892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1187d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1188a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1189892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1190892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1191892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1192892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1193892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1194892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1195892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1196852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 11976d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1198892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V), 1199892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek ProgramPoint::PostLValueKind); 1200852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1201892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12029c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1203892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1204c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 12058e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V)); 12066d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1207892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12089c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1209c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 12108e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V), 12117090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek ProgramPoint::PostLValueKind); 12126d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 12131b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 12146d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 12156d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 12163271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 12173271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1218540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 12199c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 12209c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 12219c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 12221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 12249c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1225892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 12261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12278f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 12288f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 12298f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 12308f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 12318f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 123218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 12338f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 12348f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 12358f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 12368f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek MakeNode(Dst, A, *it, state->BindExpr(A, V), ProgramPoint::PostLValueKind); 12371b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1238540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1239540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1240469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 12419c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 12429c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 12431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12445bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 12455bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 12465bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 12475bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 12485bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 12495bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 12505bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 12515bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1252892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 125386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 125486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1255e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 125618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1257e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1258e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1259e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1260e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1261e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1262e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1263e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1264e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek MakeNode(Dst, M, Pred, state->BindExpr(M, UnknownVal())); 1265e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1266e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1267892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1268e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1269e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1270e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1271d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1272e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1273e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1274e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1275e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek MakeNode(Dst, M, Pred, state->BindExpr(M, L), ProgramPoint::PostLValueKind); 1276e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek else 1277e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1278469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1279469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 12809c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 12819c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 12829c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 128393bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 128493bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose SVal location, SVal Val, bool atDeclInit) { 1285b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1286b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1287fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1288fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1289fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose StoreE, *this); 1290b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1291b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1292b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 1293b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 129493bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1295a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1296b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1297b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1298b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1299f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1300fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1301fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1302fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1303f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 13041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1305fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose MakeNode(Dst, StoreE, *I, state); 1306b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1307a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1308a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 13099c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1310a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1311e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1312e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1313e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1314a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1315a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1316a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 13179c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 13189c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 13199c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 132018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1321ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 13221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1323d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis assert(Builder && "StmtNodeBuilder must be defined."); 13241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 132514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 132614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 132714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 132814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 132914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 133014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 133114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 13324410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 133314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 133414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 13351b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1336b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 13379c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 13381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1339b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 13401b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1341b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 134273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 134373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1344a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1345b4b817d704287836b52b34369009e682f208aa2bTed Kremenek SaveAndRestore<ProgramPoint::Kind> OldSPointKind(Builder->PointKind, 1346b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ProgramPoint::PostStoreKind); 1347b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1348b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 134993bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose evalBind(Dst, StoreE, *NI, location, Val); 13501b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 13511b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 13529c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 13539c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 135418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1355ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1356cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 13571b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 135814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 135914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 136014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 13614410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 136214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 136314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1364852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1365852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1366852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 13679697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 13689697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1369b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1370018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1371852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1372ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1373ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1374852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 13759c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1376852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1377852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1378852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1379852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1380db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 13811397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 13829c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1383b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1384852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1385852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1386852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1387b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13889c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1389852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1390852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 13919c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 13929c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 139318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1394ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1395b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1397b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 13989c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 13991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1400b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14011b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1402b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 140373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 140473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1405b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1406b4b817d704287836b52b34369009e682f208aa2bTed Kremenek SaveAndRestore<ProgramPoint::Kind> OldSPointKind(Builder->PointKind); 14071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1409b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1410db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 141196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1412b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1413b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1414b4b817d704287836b52b34369009e682f208aa2bTed Kremenek MakeNode(Dst, Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1415b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ProgramPoint::PostLoadKind, tag); 1416b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1417b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 141896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 141996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 142096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 142196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek MakeNode(Dst, Ex, *NI, state->bindExprAndLocation(Ex, location, V), 142296ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek ProgramPoint::PostLoadKind, tag); 1423b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1424d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 14251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14261b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1427d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 14289c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 142918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1430ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 143100b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1432769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1433b4b817d704287836b52b34369009e682f208aa2bTed Kremenek Dst.Add(Pred); 1434b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1435b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1436b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14379c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 14380e89061a399bae32f0eca5b85658ad66a58c504dAnna Zaks if (Pred->getState() == state) { 1439eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis Src.Add(Pred); 1440eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis } else { 1441eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1442eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1443eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1444eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1445eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1446eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1447eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1448eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1449ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1450ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1451ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1452ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1453ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek ExplodedNode *N = Builder->generateNode(S, state, Pred, &etag); 1454eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis Src.Add(N ? N : Pred); 14550296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1456eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis getCheckerManager().runCheckersForLocation(Dst, Src, location, isLoad, S, 1457eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1458ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1459ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1460d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 14611c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1462b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1463b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1464b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1465b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1466b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1467b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1468b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1469b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1470b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 147118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 14721c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 14731c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 14741c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 14751c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 14761c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 14771c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 14781c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1479b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1480b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1481b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1482b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1483b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1484b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1485b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1486b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 14875f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1488b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1489b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1490b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1491b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1492b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1493b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1494b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1495b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1496b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1497b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1498b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1499b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1500b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1501b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1502c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1503c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 150419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 150519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(AMgr.getAnalysisContext(FD), 150619b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1507892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek CE, Builder->getBlock(), Builder->getIndex()); 1508c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 150919b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1510c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1511c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1512c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1513c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1514c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 15151c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1516c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1517c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 151819b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AnalysisContext *C = AMgr.getAnalysisContextInAnotherTU(FD); 1519c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1520c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 152119b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 152219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1523892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek CE, Builder->getBlock(), Builder->getIndex()); 152419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1525c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 15261c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1527c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1528c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1529b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1530b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1531c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1532c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1533b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 15341c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 15351c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15366c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 15376c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 15386c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 15396c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 15406c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 15416c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 15426c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 15436c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1544d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 154503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex) { 154686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 154786b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1548031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1549031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 15501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1551b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1552b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1553b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 15541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1555b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 15561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Dst.Add(Pred); 1557b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 15581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1559b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 156018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 15611397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 15625b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 15636c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 15646c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 15656c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 156648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 15676c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 156886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 15696c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 15706c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek Dst.Add(Builder->generateNode(Ex, StateTrue, Pred, tags.first)); 157148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 15721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 157348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 15746c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 157586b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 15766c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 15776c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek Dst.Add(Builder->generateNode(Ex, StateFalse, Pred, tags.second)); 157848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 157948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 158048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 158148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek Dst.Add(Pred); 158248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 158348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 158448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 15859c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 15869c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1587ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 15881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1589ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 15909c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 159103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 159203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 15939c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1594ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1595ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1596ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1597ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 15981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1599031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1600892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1601ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1603bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1604ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1605ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1606ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16079c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 160803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 160903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 16109c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16119c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1612ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 16131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1614ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 16151c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 16161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1617ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1618ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1619ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 16201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1624ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 16251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16261397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 16271c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 16281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16291c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 16303ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1631ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1633a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek MakeNode(Dst, A, Pred, state); 1634ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1635ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1637031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1638ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 16391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1640ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1642e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1643ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1644ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1645ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1646094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1647094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1648e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1649ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1650ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1651aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1652d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1653e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 16543b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1655aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1656aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 165747491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1658aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1659006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1660006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1661006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1662d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1663ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 16649c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 16651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 166710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 166810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1669a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 16709dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 16714a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 16724a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 16734a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 16745e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 16752ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 16762ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1677a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 16781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16798cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 16808cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 16812055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1682a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1683a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 16841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16859c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 16861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168753ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 168853ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1689803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1690803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1691aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 16921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1693aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1694aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 16951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1696aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1697aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 16981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1699aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1700aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1701aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1703102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1704102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1705102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1706102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1707102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1708102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1709102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1710102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1711aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 17125f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 17139c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 17148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 17158c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1717e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1718e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 17191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 17218c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1722642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17237da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1724a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 17257da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 17268c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17285f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 17291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 17305f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 17317090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 17327090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 17337090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 17347090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 17357090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 17361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 173810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 173910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 17408c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 17418c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 17428c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 17438c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 17448c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 17458c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 17468c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 17478c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 17488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 17498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 17508c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 17518c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 17528c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 17538c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 17548c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 17558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 175610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 17571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 17598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17619c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1762aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1763aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 17641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17659c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 17661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1767e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 17681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1769b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1770e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1771e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17739b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 17749b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1775642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17767da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1777a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 17789b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1780daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 17819c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 17821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 17849c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1785daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1786e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1787e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17899c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1790daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1791e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1792daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 17931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1794daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1795daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1796daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1797daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1798daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1799daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1800daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1802daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1803daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1804daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1805b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1806b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1807b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1808b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1809b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1810b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1811b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 18121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1813b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1815b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1816b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 181810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 181910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 182010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18214a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 18224a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 18233b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 182410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1825aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1826aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 18298673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 18308673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1831c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1832ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1833ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1834ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1835ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1836ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1837ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1838ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1839aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1840aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1841aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1843aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1844aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1845ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 18467ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 18479c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 18487ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1849031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1850031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1851031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 18527ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 18537ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1854ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1855ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1856d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 18571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1858ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1859031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1860940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1861940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1862940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1863940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1864940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1865940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1866940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1867404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1868404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1869404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1870404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1871404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1872404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1873940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 18741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18757ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1876ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1877493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1878493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1879493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1880ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1881d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 18821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1883493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1884493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1885493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1886493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1887493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1888493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1889d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1890493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1891493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1892493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 18931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1894031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1895493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1896cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 18976cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1898cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1899d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19013b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1902e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 1903e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 1904ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 1905