ExprEngine.cpp revision d231d0130a95336610ab9a42eaeb2cdac19992f3
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 1667d9fbac82922ef5b6c9ba5ac4a07e80f9960292Anna Zaks#include "clang/Analysis/Support/SaveAndRestore.h" 1743dee220252ef0b42c5f8a3bb1eca97f84f2565fArgyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/CheckerManager.h" 189b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 209b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 21d1e5a89226da79f7e6f43d40facc46abda9e5245Jordy Rose#include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" 22199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2316f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2416f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 25c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 261b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2716f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 28e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek#include "clang/Basic/SourceManager.h" 290bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 30a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 316cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 324323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 330f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 340f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 37b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 389ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 39b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 40ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 41e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 4232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 4332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 4432c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 459c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 4632c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 4732c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 4832c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 4932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 5032c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 51bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 52bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 53bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 5417a38e2636a8b1ce473fc6504c4b16cb09db29f4Jordy RoseExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled) 5525e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 561d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 57d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis Engine(*this), 58d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 5950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek Builder(NULL), 60c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6350a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 64c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 658ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 668ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 67a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 68c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 69e1b364324b94e54c610a1681ab96df755ba766fdJordy Rose ObjCGCEnabled(gcEnabled), BR(mgr, *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, 2014e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks StmtNodeBuilder& Bldr, 2024e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 2039c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2063c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 2074e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Bldr, Pred); 2083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 2104e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), 2114e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Bldr, Pred); 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 2174e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Bldr, Pred); 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2199c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2209c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2219c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 2224e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, StmtNodeBuilder& builder, 2234e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 2246bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Use RAII to remove the unnecessary, tagged nodes. 2256bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks //RegisterCreatedNodes registerCreatedNodes(getGraph()); 2266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 227d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 228d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.reclaimRecentlyAllocatedNodes(); 22918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek // Recycle any unused states in the ProgramStateManager. 230e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek StateMgr.recycleUnusedStates(); 231e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek 2320a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2338ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmtIdx = builder.getIndex(); 2348ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentBuilderContext = &builder.getContext(); 2358ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks 2360bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2370a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2380bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2406bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 241ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 242e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Builder = &builder; 2434e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *EntryState = EntryNode->getState(); 2466bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2476bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks ExplodedNode *CleanedNode = 0; 2486bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 250bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 251882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 252c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 253d30952838421ddfb9f7e346b2ba8213889a5f789Anna Zaks if (AMgr.getPurgeMode() != PurgeNone) { 2546bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 255183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 256bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2576bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2586bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2596bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2606bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2616bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 262bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 263241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 26477d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 265031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 2666bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2676bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2686bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2696bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 2706bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedNode = 271ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Builder->generateNode(currentStmt, CleanedState, EntryNode, &cleanupTag); 2726bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks Tmp.Add(CleanedNode); 2731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2746bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 27577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 276b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek SaveOr OldHasGen(Builder->hasGeneratedNode); 277846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek 278331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek SaveAndRestore<bool> OldPurgeDeadSymbols(Builder->PurgingDeadSymbols); 279331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek Builder->PurgingDeadSymbols = true; 2801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2816bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2826bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 283fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 284fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 285183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 286183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 287fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 288fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 289fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 290fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 291fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 29218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CheckerState = (*I)->getState(); 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 2956bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3006bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3016bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3036bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3046bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3056bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 30718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CleanedCheckerSt = 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks ExplodedNode *CleanedNode = Builder->generateNode(currentStmt, 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedCheckerSt, *I, 311ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek &cleanupTag); 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks Tmp.Add(CleanedNode); 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 31477d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 316031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 3176bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Remove Dest set, it's no longer needed. 318031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Dst; 3191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 3200a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek Visit(currentStmt, *I, Dst); 32177d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 323e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 324846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 325846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3260a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 327e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Builder = NULL; 328e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 329e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 330d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 3314e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks StmtNodeBuilder &builder, 3324e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *pred) { 3330a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 334cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 335d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const StackFrameContext *stackFrame = cast<StackFrameContext>(pred->getLocationContext()); 336d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXConstructorDecl *decl = cast<CXXConstructorDecl>(stackFrame->getDecl()); 337d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 338d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 339d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal thisVal = pred->getState()->getSVal(thisReg); 3409dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 34100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3429dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu ExplodedNodeSet Dst; 3439dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3449dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 345d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu Visit(BMI->getInit(), pred, Dst); 3469dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3479dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu for (ExplodedNodeSet::iterator I = Dst.begin(), E = Dst.end(); I != E; ++I){ 3489dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu ExplodedNode *Pred = *I; 34918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 3509dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 35100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3529dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 353d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3549dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu SVal InitVal = state->getSVal(BMI->getInit()); 3559dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 3569dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3579dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 358d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 3599dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 3609dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 3619dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu builder.generateNode(PP, state, Pred); 3629dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 363d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu return; 3649dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 365d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 366d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu assert(BMI->isBaseInitializer()); 367d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 368d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu // Get the base class declaration. 369d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 370d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 371d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu // Create the base object region. 372d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal baseVal = 373d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 374d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const MemRegion *baseReg = baseVal.getAsRegion(); 375d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu assert(baseReg); 376d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu Builder = &builder; 377d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu ExplodedNodeSet dst; 378d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu VisitCXXConstructExpr(ctorExpr, baseReg, pred, dst); 3799c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 3809c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 381d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 3824e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks StmtNodeBuilder &builder, 3834e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 384b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu Builder = &builder; 385b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 3863c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 3874ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 3884e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), builder, Pred); 3894ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3904ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 3914ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessBaseDtor(cast<CFGBaseDtor>(D), builder); 3924ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3934ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 3944ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessMemberDtor(cast<CFGMemberDtor>(D), builder); 3954ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3964ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 3974ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), builder); 3984ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 3994ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4004ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4014ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 4024ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4034ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 404d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor dtor, 4054e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks StmtNodeBuilder &builder, 4064e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *pred) { 40718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = pred->getState(); 4082210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const VarDecl *varDecl = dtor.getVarDecl(); 4092210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4102210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4112210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4122210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4132210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4142210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4152210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4162210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4172210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 418b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4192210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu Loc dest = state->getLValue(varDecl, pred->getLocationContext()); 420b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4212210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu ExplodedNodeSet dstSet; 4222210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 4232210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu dtor.getTriggerStmt(), pred, dstSet); 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4254ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 426d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 427d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 430d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 431d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4334ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 434d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 435d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis StmtNodeBuilder &builder) { 4369c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4379c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4389c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4398ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks ExplodedNodeSet &Dst) { 4400bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4410bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4420bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4430bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 444f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 445f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 446892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 447f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 448e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 449e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 450e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4520a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) { 453e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); 454e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 455e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 4561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 457e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 458f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 459f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 4611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 4621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 4651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4679be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 468c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 469ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 4701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4726ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 47321ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 474552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4751b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 476c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 4776b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 478be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 479c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 48028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 48128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 48228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHFinallyStmtClass: 4831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek { 484c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 485c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek Builder->BuildSinks = true; 486db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks const ExplodedNode *node = MakeNode(Dst, S, Pred, Pred->getState()); 487422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek Engine.addAbortedBlock(node, Builder->getBlock()); 488c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 489c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 4905fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 4915fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 4925fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 49391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 4945fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek case Stmt::CXXDefaultArgExprClass: { 4955fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek Dst.Add(Pred); 4965fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 4975fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek } 4985fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 499f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 500f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 501f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 502f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 50946eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 512d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 514d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 519d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 520d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 5211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5221b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5231b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5248ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5258f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 52618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5278f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 5288f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose MakeNode(Dst, S, Pred, state); 5298ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5308ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5318ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5324beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 5334beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 5344beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5354beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 53614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 537f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 538f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek Dst.Add(Pred); 53914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 54014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 541f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 54218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 543f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 544f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 545f85e193739c953358c865005855253af4f68a497John McCall MakeNode(Dst, S, Pred, state->BindExpr(S, val)); 546f85e193739c953358c865005855253af4f68a497John McCall break; 547f85e193739c953358c865005855253af4f68a497John McCall } 548f85e193739c953358c865005855253af4f68a497John McCall 549f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ExprWithCleanupsClass: { 550f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 551f85e193739c953358c865005855253af4f68a497John McCall break; 552f85e193739c953358c865005855253af4f68a497John McCall } 553f85e193739c953358c865005855253af4f68a497John McCall 5541b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 561f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5661b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 5671b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5681b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5691b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 571e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 57256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 57361eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 574276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 5751b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 5761b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5771b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 5781b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 579bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 580bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 581bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 582477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 583bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 584f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 585e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 586e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); // No-op. Simply propagate the current state unchanged. 587e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 5881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 589540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 590892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 591540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 593e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 594e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 595e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 596b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 597892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 598892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 599892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 60067d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 601892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 603c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 604c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 605c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 606c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 607e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 60803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 609e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 610e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 611e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 612e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6132de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 61418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 6151397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek MakeNode(Dst, B, Pred, state->BindExpr(B, state->getSVal(B->getRHS()))); 616e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 617e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 61806fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 619b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 620bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 621031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 622892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6239c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 62448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 62548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 626892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 62748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 628e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 629e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 63006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 631b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 632b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 633b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 634b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 63506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 636e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 63706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 638744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6397ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6407ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6417ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6427ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 643892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 6447ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 6457ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 6467ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 647856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 64803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 649856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 650856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 651856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 652856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 6536b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 65403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 6556b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 6566b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 6576b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 658e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 659e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 6601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 661e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 6629c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 663e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 664e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 665e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 667e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 668892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 669e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 670f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 671f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 672892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 673f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 6741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 676e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 67756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 67856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 67956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 680e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 681e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 683bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 684bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 685bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 686bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 687892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 688892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 689892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 691892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 693e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 694e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 695e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6970835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 6980d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 6990d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7000d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7010d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7020d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 703f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 704f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 7059c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 706f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 707f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 708f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 709f85e193739c953358c865005855253af4f68a497John McCall 710f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 711f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 712f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 713f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 714f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 715f85e193739c953358c865005855253af4f68a497John McCall } 716f85e193739c953358c865005855253af4f68a497John McCall 717f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 718f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 719e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 720e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 721b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 72203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 72303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 72403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 72503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 726eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 72703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 72803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 72903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 73003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 73103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 732c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 733c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 734c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 7351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 73697ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 737892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 738469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 73997ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 740892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 74197ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 742af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 743af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 744af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 745af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 7461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74738ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 7484410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 749e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 751bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 752bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 753bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 754bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek SaveAndRestore<bool> OldSink(Builder->BuildSinks); 755bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek Builder->BuildSinks = true; 756db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks MakeNode(Dst, S, Pred, Pred->getState()); 757bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 758bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 7591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 7611b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 7621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 7631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7648ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 7658ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 7668ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 7678ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 768f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 769f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 770f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 771e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 773e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 7749c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 775a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 776a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 777a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 778a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 779a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 780a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek Dst.Add(Pred); 781a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 782a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 7831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7849c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 78518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 7861397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek MakeNode(Dst, SE, Pred, state->BindExpr(SE, state->getSVal(LastExpr))); 787a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 788e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek else 789e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek Dst.Add(Pred); 7901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 791e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 792e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7936987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 794892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 79518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 796892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 797892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek MakeNode(Dst, S, Pred, state->BindExpr(S, V)); 798892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 799892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 800b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 80172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 80203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 8032de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (AMgr.shouldEagerlyAssume()&&(U->getOpcode() == UO_LNot)) { 804031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 805892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 8069c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 80772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 80872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 809892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 8101b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 81172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 8121b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 8131b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 8141b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 815e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 816e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Block entrance. (Update counters). 817e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 818e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 81927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekvoid ExprEngine::processCFGBlockEntrance(ExplodedNodeSet &dstNodes, 82027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek GenericNodeBuilder<BlockEntrance> &nodeBuilder){ 82127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 82227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 82327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek const CFGBlock *block = nodeBuilder.getProgramPoint().getBlock(); 82427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ExplodedNode *pred = nodeBuilder.getPredecessor(); 82527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 82627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek if (nodeBuilder.getBlockCounter().getNumVisited( 82727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek pred->getLocationContext()->getCurrentStackFrame(), 82827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek block->getBlockID()) >= AMgr.getMaxVisit()) { 829ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 830b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 83127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 832e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 833e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 834e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 8351670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek// Generic node creation. 8361670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek//===----------------------------------------------------------------------===// 8371670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek 8389c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *ExprEngine::MakeNode(ExplodedNodeSet &Dst, const Stmt *S, 83918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, const ProgramState *St, 840ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek ProgramPoint::Kind K, 841ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 842d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis assert (Builder && "StmtNodeBuilder not present."); 843ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek SaveAndRestore<const ProgramPointTag*> OldTag(Builder->Tag); 8441670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek Builder->Tag = tag; 8451670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek return Builder->MakeNode(Dst, S, Pred, St, K); 8461670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek} 8471670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek 8481670e403c48f3af4fceff3f6773a0e1cfc6c4eb3Ted Kremenek//===----------------------------------------------------------------------===// 849e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 850e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 851e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 85218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 8539c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 85403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 85705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 858a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 8591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 8611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 86305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 8641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8652de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 8661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 86805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 86905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 87005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 87105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 8721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8739c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 8742de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 87503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8778e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 87805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 8791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 88105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 88256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 88356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 8841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 88605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 8871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8889c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 8891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 89156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 89205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 89356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 8941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8958e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 89605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 8991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9009c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 9011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9029c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 9038e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 90405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 90505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 90605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 90705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9086ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9096ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9106ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9126ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 913294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 914294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 915294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 916294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 9176ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 91803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 9196ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 9206ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9216ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 9236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 9266ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 9276ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 9296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 9326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 9336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 9346ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 9356ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 9386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 9396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9406ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 9416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 9426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 9446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 9451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9461397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 9476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 9486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 9499c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 950a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 951ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 9521aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 953a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 954a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 955b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 9571aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 958a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 9594e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 960b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 961b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 9621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 96421028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 96521028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 9660fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 9671aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet TmpCheckersOut; 9681aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks NodeBuilder CheckerBldr(Pred, TmpCheckersOut, BldCtx); 969cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckerBldr, 9704e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 9718ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 9728ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks if (TmpCheckersOut.empty()) 9738ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9751aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder builder(CheckerBldr.getResults(), Dst, BldCtx, DstT, DstF); 9761aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks for (NodeBuilder::iterator I = CheckerBldr.begin(), 9771aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks E = CheckerBldr.end(); E != I; ++I) { 978cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 979cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 980cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 981cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 982cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 9834e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks const ProgramState *PrevState = Pred->getState(); 984cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal X = PrevState->getSVal(Condition); 985cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 986cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 987cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 988cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 989cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 990cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 991cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 992cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 993cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 994cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 995cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 996cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 997cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 998cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 999cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1000cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10010835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1002b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 10030835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 10040835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 100573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 10064e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, true), true, PredI); 10074e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, false), false, PredI); 1008cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 10091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1011cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 10120835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1013cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1014cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 1015cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, true)) 10164e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, true), true, PredI); 1017cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1018cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1019cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1021cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1022cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 1023cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, false)) 10244e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, false), false, PredI); 1025cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1026cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1027cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1028cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1029f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1030f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1031e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1032754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1033ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1034754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 103518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10361397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 10371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1038754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1039754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1040754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 10414a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1042754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1043754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 10441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1045d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1046754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10471c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1048ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 10491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1050ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 105124f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1052a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1053754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1054754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1055754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1057b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1058754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1059754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 10601c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1061754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 10622055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 10632055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 10642055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1065754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1066754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 10671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1068754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1069b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 10701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1071754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1072a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1073754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1074f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1075d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 107673099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1077e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndOfFunction(EndOfFunctionNodeBuilder& builder) { 107873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek StateMgr.EndPath(builder.getState()); 1079af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis getCheckerManager().runCheckersForEndPath(builder, *this); 108073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 108173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1082d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1083daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1084e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1085d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 108618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 10879c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 10881397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1089daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 10905b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 10912055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1092b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 10932055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 10942055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1095daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1096daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 10975b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1098692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 109918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 110034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 110134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 110234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1105e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1106e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1107e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1108e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 11099c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 111072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 111172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 111285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 111385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 11141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1115daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 111685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 111785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 111885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 111914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 112014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 11211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1122daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1123daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1124aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 11251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 112785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 11289c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 112948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1130b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 11311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 113218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1133a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 11341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1135daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1136daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1137daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 11381c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1139daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1140daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1142daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1143daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 114448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 114518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 114648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 114748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 114848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 114948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 115048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 115148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 115248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 11535014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1154b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 115514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 115685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 115714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 11581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 116085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 11611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 116214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1163daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11654d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 11664d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11674d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11684d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 11694d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 11704d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 11714d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 11724d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 11734d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 11744d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 11754d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 11764d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 11774d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 11784d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 11794d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 11804d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 11814d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 11824d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1183daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1184daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1185e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1186ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1187e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1188d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1189d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1190d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1191d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 119218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 11936d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 11949c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1195892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1196d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1197a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1198892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1199892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1200892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1201892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1202892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1203892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1204892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1205852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 12066d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1207892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V), 1208892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek ProgramPoint::PostLValueKind); 1209852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1210892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12119c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1212892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1213c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 12148e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V)); 12156d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1216892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12179c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1218c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 12198e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, V), 12207090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek ProgramPoint::PostLValueKind); 12216d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 12221b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 12236d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 12246d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 12253271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 12263271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1227540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 12289c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 12299c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 12309c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 12311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12329c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 12339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1234892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12368f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 12378f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 12388f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 12398f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 12408f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 124118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 12428f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 12438f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 12448f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 12458f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek MakeNode(Dst, A, *it, state->BindExpr(A, V), ProgramPoint::PostLValueKind); 12461b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1247540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1248540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1249469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 12509c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 12519c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 12521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12535bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 12545bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 12555bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 12565bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 12575bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 12585bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 12595bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 12605bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1261892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 126286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 126386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1264e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 126518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1266e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1267e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1268e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1269e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1270e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1271e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1272e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1273e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek MakeNode(Dst, M, Pred, state->BindExpr(M, UnknownVal())); 1274e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1275e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1276892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1277e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1278e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1279e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1280d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1281e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1282e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1283e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1284e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek MakeNode(Dst, M, Pred, state->BindExpr(M, L), ProgramPoint::PostLValueKind); 1285e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek else 1286e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1287469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1288469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 12899c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 12909c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 12919c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 129293bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 129393bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose SVal location, SVal Val, bool atDeclInit) { 1294b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1295b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1296fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1297fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1298fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose StoreE, *this); 1299b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1300d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 13016b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 13026b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Builder->takeNodes(CheckedSet); 13036b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks PureStmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 13046b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1305b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1306b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 130793bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1308a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1309b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1310b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1311b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1312f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1313fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1314fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1315fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1316f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 13171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13186b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Bldr.generateNode(StoreE, *I, state); 1319b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 13206b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Builder->addNodes(TmpDst); 13216b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1322a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1323a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 13249c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1325a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1326e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1327e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1328e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1329a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1330a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1331a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 13329c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 13339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 13349c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 133518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1336ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 13371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1338d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis assert(Builder && "StmtNodeBuilder must be defined."); 13391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 134114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 134214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 134314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 134414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 134514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 134614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 13474410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 134814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 134914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 13501b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1351b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 13529c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 13531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1354b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 13551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1356b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 135773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 135873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1359a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1360b4b817d704287836b52b34369009e682f208aa2bTed Kremenek SaveAndRestore<ProgramPoint::Kind> OldSPointKind(Builder->PointKind, 1361b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ProgramPoint::PostStoreKind); 1362b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1363b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 136493bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose evalBind(Dst, StoreE, *NI, location, Val); 13651b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 13661b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 13679c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 13689c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 136918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1370ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1371cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 13721b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 137314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 137414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 137514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 13764410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 137714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 137814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1379852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1380852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1381852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 13829697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 13839697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1384b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1385018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1386852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1387ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1388ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1389852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 13909c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1391852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1392852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1393852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1394852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1395db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 13961397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 13979c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1398b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1399852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1400852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1401852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1402b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14039c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1404852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1405852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 14069c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 14079c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 140818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1409ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1410b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1412b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14139c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 14141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1415b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14161b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1417b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 141873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 141973c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1420b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1421b4b817d704287836b52b34369009e682f208aa2bTed Kremenek SaveAndRestore<ProgramPoint::Kind> OldSPointKind(Builder->PointKind); 14221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14231b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1424b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1425db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 142696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1427b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1428b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1429b4b817d704287836b52b34369009e682f208aa2bTed Kremenek MakeNode(Dst, Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1430b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ProgramPoint::PostLoadKind, tag); 1431b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1432b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 143396ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 143496ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 143596ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 143696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek MakeNode(Dst, Ex, *NI, state->bindExprAndLocation(Ex, location, V), 143796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek ProgramPoint::PostLoadKind, tag); 1438b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1439d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 14401b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14411b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1442d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 14439c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 144418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1445ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 144600b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1447769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1448b4b817d704287836b52b34369009e682f208aa2bTed Kremenek Dst.Add(Pred); 1449b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1450b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1451b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14529c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 14530e89061a399bae32f0eca5b85658ad66a58c504dAnna Zaks if (Pred->getState() == state) { 1454eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis Src.Add(Pred); 1455eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis } else { 1456eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1457eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1458eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1459eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1460eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1461eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1462eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1463eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1464ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1465ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1466ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1467ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1468ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek ExplodedNode *N = Builder->generateNode(S, state, Pred, &etag); 1469eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis Src.Add(N ? N : Pred); 14700296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1471eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis getCheckerManager().runCheckersForLocation(Dst, Src, location, isLoad, S, 1472eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1473ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1474ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1475d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 14761c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1477b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1478b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1479b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1480b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1481b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1482b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1483b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1484b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1485b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 148618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 14871c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 14881c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 14891c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 14901c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 14911c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 14921c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 14931c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1494b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1495b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1496b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1497b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1498b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1499b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1500b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1501b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 15025f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1503b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1504b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1505b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1506b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1507b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1508b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1509b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1510b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1511b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1512b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1513b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1514b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1515b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1516b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1517c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1518c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 151919b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 15201d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AMgr.getStackFrame(AMgr.getAnalysisDeclContext(FD), 152119b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1522892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek CE, Builder->getBlock(), Builder->getIndex()); 1523c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 152419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1525c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1526c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1527c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1528c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1529c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 15301c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1531c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1532c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 15331d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *C = AMgr.getAnalysisDeclContextInAnotherTU(FD); 1534c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1535c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 153619b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 153719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1538892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek CE, Builder->getBlock(), Builder->getIndex()); 153919b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1540c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 15411c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1542c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1543c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1544b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1545b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1546c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1547c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1548b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 15491c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 15501c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15516c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 15526c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 15536c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 15546c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 15556c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 15566c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 15576c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 15586c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1559d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 156003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex) { 156186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 156286b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1563031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1564031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 15651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1566b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1567b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1568b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 15691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1570b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 15711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Dst.Add(Pred); 1572b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 15731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1574b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 157518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 15761397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 15775b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 15786c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 15796c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 15806c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 158148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 15826c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 158386b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 15846c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 15856c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek Dst.Add(Builder->generateNode(Ex, StateTrue, Pred, tags.first)); 158648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 15871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 158848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 15896c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 159086b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 15916c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 15926c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek Dst.Add(Builder->generateNode(Ex, StateFalse, Pred, tags.second)); 159348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 159448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 159548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 159648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek Dst.Add(Pred); 159748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 159848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 159948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 16009c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 16019c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1602ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 16031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1604ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16059c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 160603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 160703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 16089c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1609ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1610ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1611ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1612ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1614031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1615892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1616ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1618bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1619ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1620ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1621ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16229c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 162303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 162403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 16259c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16269c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1627ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 16281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1629ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 16301c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 16311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1632ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1633ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1634ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 16351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 163618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 163803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1639ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 16401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16411397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 16421c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 16431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16441c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 16453ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1646ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1648a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek MakeNode(Dst, A, Pred, state); 1649ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1650ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1652031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1653ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 16541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1655ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1657e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1658ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1659ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1660ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1661094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1662094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1663e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1664ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1665ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1666aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1667d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1668e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 16693b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1670aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1671aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 167247491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1673aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1674006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1675006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1676006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1677d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1678ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 16799c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 16801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 168210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 168310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1684a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 16859dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 16864a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 16874a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 16884a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 16895e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 16902ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 16912ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1692a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 16931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16948cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 16958cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 16962055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1697a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1698a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 16991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17009c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 17011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 170253ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 170353ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1704803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1705803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1706aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 17071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1708aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1709aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 17101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1711aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1712aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1714aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1715aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1716aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1718102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1719102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1720102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1721102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1722102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1723102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1724102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1725102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1726aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 17275f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 17289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 17298c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 17308c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1732e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1733e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 17341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 17368c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1737642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17387da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1739a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 17407da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 17418c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17435f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 17441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 17455f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 17467090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 17477090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 17487090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 17497090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 17507090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 17511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 175310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 175410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 17558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 17568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 17578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 17588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 17598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 17608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 17618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 17628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 17638c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 17648c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 17658c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 17668c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 17678c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 17688c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 17698c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 17708c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 177110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17738c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 17748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 17758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 17769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1777aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1778aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17809c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 17811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1782e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1784b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1785e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1786e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 17871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17889b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 17899b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1790642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 17917da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1792a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 17939b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 17941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1795daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 17969c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 17971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 17999c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1800daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1801e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1802e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 18031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18049c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1805daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1806e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1807daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1809daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1810daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1811daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1812daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1813daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1814daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1815daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1817daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1818daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1819daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1820b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1821b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1822b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1823b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1824b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1825b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1826b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1828b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1830b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1831b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 183310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 183410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 183510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18364a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 18374a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 18383b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 183910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1840aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1841aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 184318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 18448673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 18458673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1846c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1847ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1848ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1849ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1850ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1851ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1852ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1853ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1854aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1855aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1856aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 18571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1858aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1859aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1860ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 18617ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 18629c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 18637ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1864031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1865031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1866031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 18677ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 18687ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1869ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1870ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1871d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 18721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1873ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1874031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1875940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1876940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1877940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1878940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1879940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1880940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1881940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1882404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1883404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1884404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1885404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1886404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1887404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1888940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 18891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18907ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1891ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1892493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1893493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1894493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1895ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1896d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 18971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1898493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1899493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1900493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1901493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1902493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1903493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1904d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1905493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1906493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1907493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 19081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1909031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1910493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1911cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 19126cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1913cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1914d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19163b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1917e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 1918e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 1919ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 1920