ExprEngine.cpp revision f236b6503a4dbc44c1fccb8756bd57c9d0efdf05
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()), 59c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6032a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6250a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 63c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 648ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 658ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 66a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 67c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 68e1b364324b94e54c610a1681ab96df755ba766fdJordy Rose ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 69d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 70d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 71d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 72d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 73d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 74c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 7550a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 76d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 77cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 78e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 7950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8050a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 81e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 82e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 83e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 84e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 8518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::getInitialState(const LocationContext *InitLoc) { 8618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = StateMgr.getInitialState(InitLoc); 871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 89cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek 9052e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9152e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 925974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 93b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek const Decl *D = InitLoc->getDecl(); 945974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 955974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 965974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 975974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 985974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 105b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 109b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1101397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1119c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 112c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 117b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 120b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *newState = state->assume(*Constraint, true)) 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 123b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 12552e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 1265974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 127b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // method. 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 1315974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 1321397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 133b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1345974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 1355974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Assume that the pointer value in 'self' is non-null. 13628f47b92e760ccf641ac91cb0fe1c12d9ca89795Ted Kremenek state = state->assume(*LV, true); 1375974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek assert(state && "'self' cannot be null"); 1385974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 139cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 1405974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } while (0); 141b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14252e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 143e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 144e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 145e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenekbool 146e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed KremenekExprEngine::doesInvalidateGlobals(const CallOrObjCMessage &callOrMessage) const 147e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek{ 148e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (callOrMessage.isFunctionCall() && !callOrMessage.isCXXCall()) { 149e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek SVal calleeV = callOrMessage.getFunctionCallee(); 150e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const FunctionTextRegion *codeR = 1515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<FunctionTextRegion>(calleeV.getAsRegion())) { 152e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 153e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek const FunctionDecl *fd = codeR->getDecl(); 154e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (const IdentifierInfo *ii = fd->getIdentifier()) { 1555f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fname = ii->getName(); 156e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek if (fname == "strlen") 157e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return false; 158e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 159e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 160e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek } 161e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 162e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek // The conservative answer: invalidates globals. 163e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek return true; 164e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek} 165e5cfd52a3a5d4bb46f77323fa8fa0b973fcde7bcTed Kremenek 166e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 167e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 168e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 169e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1709c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17132a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 172294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekconst ProgramState *ExprEngine::processAssume(const ProgramState *state, 173fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 174fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17532a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 17718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(const ProgramState *state) { 178183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 179c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 180c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 18118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState * 18218c66fdc3c4008d335885695fe36fb5353c5f672Ted KremenekExprEngine::processRegionChanges(const ProgramState *state, 18335bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 184537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 185537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Regions) { 18635bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 187537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose Explicits, Regions); 188c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 189c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 190dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rosevoid ExprEngine::printState(raw_ostream &Out, const ProgramState *State, 191dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 192dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 193dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 194dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 195e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 19630726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 197ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 198ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 199ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 200ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 201ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 202ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 203ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2049c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2063c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2073c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 208ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 211ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 217ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2199c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 220f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentStmtIdx = 0; 221f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 2229c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2239c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 224ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksconst Stmt *ExprEngine::getStmt() const { 225f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks const CFGStmt *CS = (*currentBuilderContext->getBlock())[currentStmtIdx] 226f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks .getAs<CFGStmt>(); 227ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return CS ? CS->getStmt() : 0; 228ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks} 229ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 230ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks// TODO: Adding nodes to the worklist shoudl be a function inside CoreEngine. 231ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::GenerateAutoTransition(ExplodedNode *N) { 232ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks assert (!N->isSink()); 233ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const CFGBlock *Block = currentBuilderContext->getBlock(); 234ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned Idx = currentStmtIdx; 235ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 236ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Check if this node entered a callee. 237ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (isa<CallEnter>(N->getLocation())) { 238ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Still use the index of the CallExpr. It's needed to create the callee 239ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // StackFrameContext. 240ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx); 241ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 242ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 243ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 244ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Do not create extra nodes. Move to the next CFG element. 245ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (isa<PostInitializer>(N->getLocation())) { 246ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx+1); 247ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 248ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 249ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 250ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks PostStmt Loc(getStmt(), N->getLocationContext()); 251ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 252ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Loc == N->getLocation()) { 253ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Note: 'N' should be a fresh node because otherwise it shouldn't be 254ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // a member of Deferred. 255ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx+1); 256ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 257ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 258ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 259ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks bool IsNew; 260ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Succ = Engine.G->getNode(Loc, N->getState(), &IsNew); 261ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Succ->addPredecessor(N, *Engine.G); 262ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 263ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (IsNew) 264ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(Succ, Block, Idx+1); 265ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks} 266ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 267ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 268ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2694e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 2706bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Use RAII to remove the unnecessary, tagged nodes. 2716bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks //RegisterCreatedNodes registerCreatedNodes(getGraph()); 2726bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 273d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 274d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.reclaimRecentlyAllocatedNodes(); 27518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek // Recycle any unused states in the ProgramStateManager. 276e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek StateMgr.recycleUnusedStates(); 277e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek 2780a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2790bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2800a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2810bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2834e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 28518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *EntryState = EntryNode->getState(); 2866bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 289bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 290882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 291c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 292d30952838421ddfb9f7e346b2ba8213889a5f789Anna Zaks if (AMgr.getPurgeMode() != PurgeNone) { 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 294183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 295bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 3006bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 301bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 302241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 30377d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 304031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 305f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 306f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 307f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 312aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 313f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 3141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3156bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3166bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3176bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 318fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 319fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 320183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 321183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 322fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 323fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 324fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 325aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 326fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 327fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 32818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CheckerState = (*I)->getState(); 3296bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3306bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3316bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3326bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3336bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 3356bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3366bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3386bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3396bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3406bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3426bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 34318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CleanedCheckerSt = 3446bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 345f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 346f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3476bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 34877d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 350ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet AllDst; 351031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 352031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Dst; 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 3540a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek Visit(currentStmt, *I, Dst); 355ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks AllDst.insert(Dst); 356ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 357ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 358ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks for (ExplodedNodeSet::iterator I = AllDst.begin(), 359ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks E = AllDst.end(); I != E; ++I) { 360ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks assert(!(*I)->isSink()); 361ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 36277d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 364e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 365846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 366846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3670a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 368e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 369e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 370d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 371056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 372ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 373ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3740a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 375cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 376056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 377056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 378056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 379056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 380d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 381d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 382056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3839dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 38400eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 385056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet AfterEval; 3869dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3879dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 388056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Visit(BMI->getInit(), Pred, AfterEval); 3899dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 390aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(AfterEval, Dst, *currentBuilderContext); 391056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = AfterEval.begin(), 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = AfterEval.end(); I != E; ++I){ 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *P = *I; 394056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = P->getState(); 3959dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 39600eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3979dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 398d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3999dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu SVal InitVal = state->getSVal(BMI->getInit()); 4009dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 4019dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 4029dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 403d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 4049dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 4059dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 406056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Bldr.generateNode(PP, P, state); 4079dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 408056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 409056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 410056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 411056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 412056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 413056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 414056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 415056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 416056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 417056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 419d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 422056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = Dst.begin(), 423056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = Dst.end(); I != E; ++I) { 424ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 425ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 4269c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4279c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 428d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 429ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 430ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4313c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 433056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4344ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4354ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 436056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4374ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4384ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 439056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4404ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4414ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 442056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4434ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4444ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4454ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4464ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 447ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 448ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks for (ExplodedNodeSet::iterator I = Dst.begin(), 449ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks E = Dst.end(); I != E; ++I) { 450ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 451ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 4524ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4534ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 454056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 455056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 456056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 457056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = Pred->getState(); 458056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4592210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4602210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4612210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4622210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4632210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4642210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4652210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4662210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4672210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 468b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 469056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 470b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4712210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 472056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4734ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4744ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 475d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 476056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4774ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 478d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 479056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4804ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 481d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 482056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 483056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4849c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4859c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4868ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks ExplodedNodeSet &Dst) { 4870bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4880bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4890bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 490aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 4910bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 492f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 493f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 494892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 495f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 496e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 497e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 498e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 500ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 501e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 5021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 503e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 504f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 505f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 5111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5139be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 514c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 515ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 5161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5186ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 51921ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 520552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 522c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5236b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 524be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 525c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 52628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 52728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 528ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 529ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState()); 530ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 531c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 532c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5335fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5345fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5355fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 53691a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 537ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5385fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5395fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 540f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 541f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 542f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 543f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5461b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5471b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 55046eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 553d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5541b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 555d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5581b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 560d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 561d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 562ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5631b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5641b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5651b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5668ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5678f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 56818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5698f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 570ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5718ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5728ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5738ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5744beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 575ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5764beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 577ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5784beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5794beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 58014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 581f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 58214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 58314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 584f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 58518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 586f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 587f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 588ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, val)); 589f85e193739c953358c865005855253af4f68a497John McCall break; 590f85e193739c953358c865005855253af4f68a497John McCall } 591f85e193739c953358c865005855253af4f68a497John McCall 592ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 593ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 594f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 595ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 596f85e193739c953358c865005855253af4f68a497John McCall break; 597f85e193739c953358c865005855253af4f68a497John McCall 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 6011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 6021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 6031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 605f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 6061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 6071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 6081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 615e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 61656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 61761eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 618276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 6191b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 6201b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6221b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 623bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 624bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 625bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 626477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 627bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 628f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 629e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 630ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // No-op. Simply propagate the current state unchanged. 631e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 6321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 633540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 634ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 635892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 636ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 637540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 639e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 640ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 641e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 642ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 643e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 644b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 645892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 646ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 647892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 648892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 649ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 65067d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 651892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 653c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 654ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 655c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 656ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 657c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 658c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 659e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 66003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 661e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 662ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 663e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 664ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 665e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 666e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6672de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 66818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 669ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 670ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(B, state->getSVal(B->getRHS()))); 671e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 672e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 67306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 674ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 675ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 676b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 677bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 678031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 679892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6809c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 68148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 68248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 683892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 68448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 685ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 686e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 687e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 68806fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 689b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 690b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 691b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 692ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 693b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 694ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 69506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 696e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 69706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 698744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6997ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7007ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7017ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7027ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 703ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 704892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 705ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7067ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7077ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7087ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 709856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 710ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 71103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 712856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 713ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 714856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 715856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 716856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7176b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 718ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 71903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7206b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 721ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7226b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7236b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 724e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 725e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 727e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 728ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7299c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 730e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 731ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 732e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 733e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 735e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 736ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 737892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 738ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 739e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 740f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 741f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 742ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 743892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 744ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 745f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 748e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 749ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 75156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 75256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 753ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 754e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 755e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 757bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 758ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 759bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 760ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 761bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 762bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 763892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 764ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 765892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 766892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 767ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 768e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 769892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 771e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 773e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 775e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7770835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 7780d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 7790d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7800d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7810d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7820d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 783f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 784f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 785ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 787f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 788f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 789f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 790f85e193739c953358c865005855253af4f68a497John McCall 791f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 792f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 793f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 794f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 795f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 796f85e193739c953358c865005855253af4f68a497John McCall } 797f85e193739c953358c865005855253af4f68a497John McCall 798f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 799f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 800ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 801e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 802e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 803b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 80403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 805ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 80603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 80703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 80803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 809eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 81003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 81103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 812ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 81303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 81403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 81503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 816c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 817ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 818c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 820c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 824892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 825ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 826469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 827ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 82897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 829ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 830892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 831ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 83297ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 833af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 834af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 835ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 836af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 837ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 838af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84038ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 841ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8424410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 843ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 844e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 846bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 847bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 848bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 849ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 850bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 851bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 8521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8531b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 854ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8551b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 856ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8571b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 860ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8618ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 862ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8638ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 8648ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 865f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 866ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 867f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 868f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 869ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 870e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 872e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 8739c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 874a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 875a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 876a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 877a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 878a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 879a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 880a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8829c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 88318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 884ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 885ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(SE, state->getSVal(LastExpr))); 886a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 887e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 888e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8896987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 890892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 89118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 892892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 893ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, V)); 894892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 895892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 896b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 89772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 898ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 89903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 900ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 901031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 902892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9039c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 90472374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 90572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 906892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 907ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 90972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9101b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9111b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9121b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 913e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 914e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Block entrance. (Update counters). 915e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 916e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 91727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekvoid ExprEngine::processCFGBlockEntrance(ExplodedNodeSet &dstNodes, 91827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek GenericNodeBuilder<BlockEntrance> &nodeBuilder){ 91927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 92027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 92127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek const CFGBlock *block = nodeBuilder.getProgramPoint().getBlock(); 92227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ExplodedNode *pred = nodeBuilder.getPredecessor(); 92327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 92427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek if (nodeBuilder.getBlockCounter().getNumVisited( 92527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek pred->getLocationContext()->getCurrentStackFrame(), 92627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek block->getBlockID()) >= AMgr.getMaxVisit()) { 927ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 928b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 92927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 930e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 931e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 932e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 933e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 934e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 935e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 93618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 9379c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 93803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 9391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 94105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 942a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 9431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 9451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 94705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 9481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9492de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 9501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 95205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 95305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 95405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 95505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9579c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 9582de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 95903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 9601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9618e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 96205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 96505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 96656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 96756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 9681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 97005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 9711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9729c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 9731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 97556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 97605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 97756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 9781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9798e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 98005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 9831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9849c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 9878e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 98805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 98905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 99005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 99105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9926ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9936ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9946ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9956ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9966ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 997294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 998294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 999294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 1000294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 10016ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 100203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 10036ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 10046ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10056ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10066ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 10076ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 10081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 100903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 10106ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 10116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10126ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 10136ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10156ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 10166ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 10176ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 10186ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 10196ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10216ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 10226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10246ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 10256ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 10266ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10276ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 10286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10301397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 10316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 10326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10339c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1034a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1035ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 10361aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1037a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1038a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1039f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1040f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1041b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 10421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 10431aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1044a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 10454e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1046b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1047b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 10481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 105021028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 105121028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 10520fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1053f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1054f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 10554e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 10568ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1057f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 10588ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 10591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1060f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1061f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1062f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1063cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1064cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1065cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1066cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1067cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 10684e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks const ProgramState *PrevState = Pred->getState(); 1069cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal X = PrevState->getSVal(Condition); 1070cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1071cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1072cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1073cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1074cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1075cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1076cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1077cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1078cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1079cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1080cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 1081cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1082cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1083cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1084cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1085cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10860835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1087b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 10880835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 10890835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 109073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 10914e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, true), true, PredI); 10924e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, false), false, PredI); 1093cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 10941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1096cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 10970835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1098cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1099cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 1100cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, true)) 11014e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, true), true, PredI); 1102cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1103cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1104cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 11051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1106cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1107cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 1108cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, false)) 11094e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, false), false, PredI); 1110cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1111cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1112cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1113cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1114f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1115f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1116f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1117e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1118754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1119ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1120754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 112118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 11221397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 11231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1124754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1125754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1126754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 11274a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1128754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1129754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1131d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1132754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11331c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1134ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 11351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1136ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 113724f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1138a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1139754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1140754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1141754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1143b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1144754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1145754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11461c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1147754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 11482055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 11492055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 11502055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1151754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1152754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1154754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1155b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 11561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1157754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1158a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1159754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1160f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1161af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks// TODO: The next two functions should be moved into CoreEngine. 1162af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::GenerateCallExitNode(ExplodedNode *N) { 1163af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks // Create a CallExit node and enqueue it. 1164af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks const StackFrameContext *LocCtx 1165af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks = cast<StackFrameContext>(N->getLocationContext()); 1166af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks const Stmt *CE = LocCtx->getCallSite(); 1167af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks 1168af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks // Use the the callee location context. 1169af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks CallExit Loc(CE, LocCtx); 1170af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks 1171af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks bool isNew; 1172af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNode *Node = Engine.G->getNode(Loc, N->getState(), &isNew); 1173af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Node->addPredecessor(N, *Engine.G); 1174af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks 1175af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks if (isNew) 1176af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Engine.WList->enqueue(Node); 1177af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks} 1178af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks 1179af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::enqueueEndOfPath(ExplodedNodeSet &S) { 1180af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks for (ExplodedNodeSet::iterator I = S.begin(), E = S.end(); I != E; ++I) { 1181af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNode *N = *I; 1182af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks // If we are in an inlined call, generate CallExit node. 1183af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks if (N->getLocationContext()->getParent()) 1184af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks GenerateCallExitNode(N); 1185af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks else 1186af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Engine.G->addEndOfPath(N); 1187af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks } 1188af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks} 1189af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks 1190d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 119173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1192af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1193af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1194af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1195af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 1196af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks enqueueEndOfPath(Dst); 119773099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 119873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1199d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1200daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1201e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1202d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 120318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 12049c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 12051397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1206daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 12075b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 12082055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1209b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 12102055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 12112055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1212daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1213daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12145b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1215692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 121618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 121734feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 121834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 121934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 12201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 122134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1222e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1223e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1224e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1225e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 12269c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 122772afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 122872afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 122985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 123085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 12311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1232daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 123385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 123485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 123585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 123614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 123714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 12381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1239daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1240daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1241aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 124485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 12459c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 124648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1247b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 124918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1250a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1252daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1253daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1254daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 12551c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1256daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1257daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1259daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1260daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 126148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 126218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 126348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 126448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 126548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 126648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 126748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 126848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 126948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 12705014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1271b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 127214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 127385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 127414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 12751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 127785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 12781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1280daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12824d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 12834d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12844d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12854d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 12864d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 12874d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 12884d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 12894d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 12904d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 12914d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 12924d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 12934d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 12944d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 12954d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 12964d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12974d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 12984d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1300daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1301daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1302e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1303ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1304e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1305d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1306d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1307d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1308d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1309aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1310ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 131118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 13126d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 13139c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1314892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1315d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1316a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1317892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1318892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1319892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1320892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1321892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1322892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1323892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1324852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 13256d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1326ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1327ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1328852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1329892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 13309c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1331892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1332c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 1333ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V)); 13346d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1335892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 13369c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1337c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1338ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1339ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 13406d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 13411b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 13426d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 13436d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 13443271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 13453271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1346540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 13479c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 13489c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 13499c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 13501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13519c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 13529c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1353892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 13541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13558f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 13568f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 13578f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1358aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1359ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13608f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 13618f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 136218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 13638f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 13648f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 13658f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 1366ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, *it, state->BindExpr(A, V), 1367ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 13681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1369540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1370540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1371469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 13729c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 13739c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1375aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 13765bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 13775bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 13785bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1379ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 13805bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1381ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 13825bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 13835bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 13845bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 13855bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1386892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 138786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 138886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1389e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 139018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1391e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1392e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1393e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1394e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1395e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1396e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1397e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1398ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, UnknownVal())); 1399e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1400e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1401892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1402e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1403e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1404e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1405d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1406e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1407e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1408e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1409ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, L), false, 0, 1410ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1411ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1412ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1413e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1414ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1415ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1416469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1417469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 14189c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 14199c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 14209c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 142193bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 1422ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks SVal location, SVal Val, bool atDeclInit, 1423ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::Kind PointKind) { 1424b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1425b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1426fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1427fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1428ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks StoreE, *this, PointKind); 1429b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1430d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 14316b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1432aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 14336b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1434b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1435b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 143693bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1437a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1438b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1439b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1440b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1441f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1442fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1443fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1444fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1445f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 14461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1447ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(StoreE, *I, state, false, 0, PointKind); 1448b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1449ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14506b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1451a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1452a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 14539c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1454a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1455e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1456e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1457e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1458a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1459a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1460a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 14619c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 14629c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 14639c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 146418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1465ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 146614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 146714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 146814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 146914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 147014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 147114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 147214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 14734410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 147414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 147514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 14761b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1477b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14789c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1480b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1482b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 148373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 148473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1485a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1486b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 1487ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false, 1488ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostStoreKind); 14891b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14901b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 14919c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 14929c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 149318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1494ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1495cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 14961b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 149714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 149814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 149914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 15004410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 150114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 150214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1503852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1504852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1505852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 15069697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 15079697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1508b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1509018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1510852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1511ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1512ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1513852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 15149c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1515852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1516852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1517852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1518852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1519db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 15201397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 15219c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1522b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1523852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1524852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1525852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1526b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15279c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1528852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1529852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 15309c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 15319c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 153218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1533ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1534b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1536b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 15379c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1538b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 15391b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1540b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1541aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 154273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 154373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1544b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15451b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1546b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1547db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 154896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1549b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1550b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1552ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1553b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1554b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 155596ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 155696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 155796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1558ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, location, V), 1559ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1560b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1561d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 15621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 15631b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1564d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 15659c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 156618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1567ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1568aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 156900b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1570769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1571b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1572b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1573b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15749c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1575ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1576aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1577ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1578eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1579eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1580eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1581eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1582eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1583eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1584eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1585eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1586ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1587ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1588ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1589ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1590ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 15910296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1592ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1593ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1594eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1595ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1596ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1597ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1598d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 15991c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1600b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1601b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1602b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1603b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1604b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1605b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1606b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1607b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1608b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 160918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16101c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 16111c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 16121c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 16131c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 16141c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 16151c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 16161c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1617b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1618b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1619b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1620b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1621b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1622b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1623b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1624b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 16255f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1626b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1627b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1628b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1629b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1630b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1631b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1632b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1633b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1634b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1635b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1636b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1637b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1638b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1639b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1640c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1641c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 164219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 16431d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AMgr.getStackFrame(AMgr.getAnalysisDeclContext(FD), 164419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1645056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 1646c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 164719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1648c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1649c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1650c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1651c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1652c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 16531c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1654c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1655c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 16561d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *C = AMgr.getAnalysisDeclContextInAnotherTU(FD); 1657c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1658c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 165919b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 166019b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1661056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 166219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1663c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 16641c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1665c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1666c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1667b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1668b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1669c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1670c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1671b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 16721c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 16731c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 16746c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 16756c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 16766c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 16776c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 16786c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 16796c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 16806c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 16816c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1682d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 168303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex) { 1684aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 168586b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1686031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1687031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1688b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1689b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1690b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 16911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1692b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1693b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 16941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1695b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 169618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16971397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 16985b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 16996c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17006c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17016c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 170248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17036c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 170486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17056c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 1706ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 170748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 170948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17106c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 171186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17126c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 1713ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 171448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 171548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 171648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 171748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 171848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 17199c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 17209c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1721ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 17221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1723ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 17249c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 172503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 172603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 17279c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1728ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1729ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1730ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1731ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1733031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1734892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1735ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 17361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1737bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1738ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1739ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1740ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 17419c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 174203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 174303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 17449c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 17459c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1746ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1747aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1748ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 17491c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 17501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1751ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1752ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1753ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 17541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 17561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1758ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 17591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17601397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 17611c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 17621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17631c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 17643ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1765ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1767ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, Pred, state); 1768ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1769ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1771031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1772ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 17731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1774ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1776e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1777ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1778ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1779ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1780094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1781094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1782e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1783ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1784ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1785aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1786d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1787e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 17883b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1789aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1790aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 179147491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1792aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1793006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1794006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1795006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1796d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1797ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 17989c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 17991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 180010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 180110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 180210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1803a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18049dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18054a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18064a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18074a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18085e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18092ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18102ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1811a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18138cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18148cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18152055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1816a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1817a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18199c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182153ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 182253ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1823803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1824803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1825aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1827aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1828aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 18291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1830aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1831aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1833aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1834aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1835aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1837102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1838102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1839102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1840102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1841102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1842102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1843102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1844102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1845aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 18465f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 18479c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 18488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 18498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1851e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1852e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 18531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 18558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1856642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18577da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1858a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 18597da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 18608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18625f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 18631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 18645f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 18657090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 18667090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 18677090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 18687090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 18697090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 18701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 187210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 187310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 18758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 18768c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 18778c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 18788c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 18798c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 18808c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 18818c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 18828c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 18838c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 18848c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 18858c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 18868c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 18878c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 18888c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 18898c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 189010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 18911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18928c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 18938c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18948c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18959c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1896aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1897aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 18981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18999c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1901e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1903b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1904e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1905e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19079b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19089b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1909642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19107da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1911a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19129b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1914daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19159c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19189c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1919daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1920e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1921e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19239c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1924daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1925e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1926daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1928daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1929daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1930daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1931daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1932daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1933daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1934daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1936daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1937daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1938daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1939b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1940b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1941b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1942b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1943b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1944b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1945b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 19461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1947b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1949b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1950b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 195210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 195310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 195410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19554a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 19564a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 19573b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 195810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1959aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1960aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 19611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 196218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 19638673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 19648673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1965c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1966ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1967ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1968ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1969ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1970ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1971ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1972ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1973aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1974aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1975aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 19761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1977aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1978aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1979ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 19807ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 19819c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 19827ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1983031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1984031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1985031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 19867ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 19877ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1988ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1989ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1990d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 19911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1992ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1993031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1994940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1995940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1996940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1997940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1998940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1999940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2000940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2001404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2002404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 2003404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 2004404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 2005404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 2006404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2007940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20097ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2010ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2011493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2012493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2013493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2014ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2015d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2017493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2018493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2019493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2020493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2021493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2022493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2023d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2024493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2025493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2026493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2028031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2029493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2030cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 20316cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2032cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2033d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 20341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20353b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2036e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2037e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2038ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2039