ExprEngine.cpp revision aa0aeb1cbe117db68d35700cb3a34aace0f99b99
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 } 2209c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2219c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 222ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksconst Stmt *ExprEngine::getStmt() const { 223ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const CFGStmt *CS = (*currentBuilderContext->getBlock())[currentStmtIdx].getAs<CFGStmt>(); 224ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return CS ? CS->getStmt() : 0; 225ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks} 226ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 227ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks// TODO: Adding nodes to the worklist shoudl be a function inside CoreEngine. 228ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::GenerateAutoTransition(ExplodedNode *N) { 229ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks assert (!N->isSink()); 230ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const CFGBlock *Block = currentBuilderContext->getBlock(); 231ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned Idx = currentStmtIdx; 232ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 233ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Check if this node entered a callee. 234ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (isa<CallEnter>(N->getLocation())) { 235ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Still use the index of the CallExpr. It's needed to create the callee 236ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // StackFrameContext. 237ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx); 238ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 239ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 240ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 241ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Do not create extra nodes. Move to the next CFG element. 242ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (isa<PostInitializer>(N->getLocation())) { 243ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx+1); 244ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 245ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 246ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 247ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks PostStmt Loc(getStmt(), N->getLocationContext()); 248ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 249ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Loc == N->getLocation()) { 250ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // Note: 'N' should be a fresh node because otherwise it shouldn't be 251ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // a member of Deferred. 252ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(N, Block, Idx+1); 253ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks return; 254ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 255ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 256ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks bool IsNew; 257ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Succ = Engine.G->getNode(Loc, N->getState(), &IsNew); 258ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Succ->addPredecessor(N, *Engine.G); 259ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 260ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (IsNew) 261ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.WList->enqueue(Succ, Block, Idx+1); 262ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks} 263ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 264ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 265ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 2664e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks ExplodedNode *Pred) { 2676bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // TODO: Use RAII to remove the unnecessary, tagged nodes. 2686bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks //RegisterCreatedNodes registerCreatedNodes(getGraph()); 2696bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 270d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Reclaim any unnecessary nodes in the ExplodedGraph. 271d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.reclaimRecentlyAllocatedNodes(); 27218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek // Recycle any unused states in the ProgramStateManager. 273e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek StateMgr.recycleUnusedStates(); 274e3115e257163321ecde429aeae75f1702f099d4cTed Kremenek 2750a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = S.getStmt(); 2760bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 2770a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt->getLocStart(), 2780bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 2791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2804e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks EntryNode = Pred; 2811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 28218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *EntryState = EntryNode->getState(); 2836bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = EntryState; 2846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Create the cleaned state. 286bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const LocationContext *LC = EntryNode->getLocationContext(); 287882998923889a2fcce9b49696506c499e22cf38fTed Kremenek SymbolReaper SymReaper(LC, currentStmt, SymMgr, getStoreManager()); 288c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu 289d30952838421ddfb9f7e346b2ba8213889a5f789Anna Zaks if (AMgr.getPurgeMode() != PurgeNone) { 2906bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 291183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 292bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state in which dead bindings are removed from the environment 2956bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // and the store. TODO: The function should just return new env and store, 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // not a new state. 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 298bd533aa4ff8895c676d4634d0d3de254962569d0Jordy Rose } 299241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 30077d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 301031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 302f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 303f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 304f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks 3056bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 309aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Tmp, *currentBuilderContext); 310f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, EntryNode, CleanedState, false, &cleanupTag); 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 3146bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 315fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 316fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForDeadSymbols(CheckedSet, EntryNode, 317183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis SymReaper, currentStmt, *this); 318183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 319fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 320fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 321fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 322aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Tmp, *currentBuilderContext); 323fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 324fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 32518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CheckerState = (*I)->getState(); 3266bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3276bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3286bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3296bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3306bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3316bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, EntryState) && 3326bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3336bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3346bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, EntryState) && 3356bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3366bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3376bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3386bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3396bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 34018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *CleanedCheckerSt = 3416bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 342f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks Bldr.generateNode(currentStmt, *I, CleanedCheckerSt, false, &cleanupTag, 343f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks ProgramPoint::PostPurgeDeadSymbolsKind); 3446bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 34577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 347ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet AllDst; 348031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) { 349031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Dst; 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 3510a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek Visit(currentStmt, *I, Dst); 352ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks AllDst.insert(Dst); 353ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 354ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 355ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks for (ExplodedNodeSet::iterator I = AllDst.begin(), 356ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks E = AllDst.end(); I != E; ++I) { 357ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks assert(!(*I)->isSink()); 358ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 35977d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 361e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 362846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 363846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3640a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 365e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 366e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 367d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 368056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 369ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 370ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3710a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 372cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 373056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 374056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 375056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 376056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 377d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 378d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 379056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3809dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 38100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 382056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet AfterEval; 3839dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3849dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 385056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Visit(BMI->getInit(), Pred, AfterEval); 3869dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 387aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(AfterEval, Dst, *currentBuilderContext); 388056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = AfterEval.begin(), 389056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = AfterEval.end(); I != E; ++I){ 390056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *P = *I; 391056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = P->getState(); 3929dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 39300eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const FieldDecl *FD = BMI->getAnyMember(); 3949dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 395d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu SVal FieldLoc = state->getLValue(FD, thisVal); 3969dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu SVal InitVal = state->getSVal(BMI->getInit()); 3979dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu state = state->bindLoc(FieldLoc, InitVal); 3989dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3999dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Use a custom node building process. 400d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu PostInitializer PP(BMI, stackFrame); 4019dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Builder automatically add the generated node to the deferred set, 4029dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // which are processed in the builder's dtor. 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Bldr.generateNode(PP, P, state); 4049dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu } 405056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 406056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 407056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 408056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 409056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 410056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 411056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 412056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 413056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 414056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 415056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 416d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 417056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 419056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks for (ExplodedNodeSet::iterator I = Dst.begin(), 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks E = Dst.end(); I != E; ++I) { 421ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 422ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 4239c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4249c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 425d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 426ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 427ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4283c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 430056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4314ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 433056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4344ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4354ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 436056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4374ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4384ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 439056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4404ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4414ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4424ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4434ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 444ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 445ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks for (ExplodedNodeSet::iterator I = Dst.begin(), 446ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks E = Dst.end(); I != E; ++I) { 447ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks GenerateAutoTransition(*I); 448ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 4494ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4504ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 451056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 452056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 453056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 454056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const ProgramState *state = Pred->getState(); 455056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4562210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4572210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4582210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4592210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4602210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4612210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4622210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4632210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4642210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 465b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 466056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 467b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4682210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 469056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4704ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4714ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 472d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 473056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4744ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 475d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 476056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4774ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 478d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 479056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 480056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4819c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4829c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4838ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks ExplodedNodeSet &Dst) { 4840bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4850bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4860bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 487aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 4880bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 489f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 490f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 491892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 492f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 493e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 494e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 495e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 497ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 498e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 500e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 501f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 502f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXBindTemporaryExprClass: 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXCatchStmtClass: 5051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXThrowExprClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5109be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 511c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 512ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5141b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5156ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 51621ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 517552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 519c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5206b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 521be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 522c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 52328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 52428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 525ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 526ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState()); 527ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 528c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 529c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5305fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5315fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5325fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 53391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 534ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5355fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5365fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 537f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 538f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 539f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 540f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5431b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5461b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 54746eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5481b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 550d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 552d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5531b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5541b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 5551b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 557d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 558d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 5591b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5601b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek break; 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5628ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5638f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 56418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 5658f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose state = state->BindExpr(S, svalBuilder.makeIntValWithPtrWidth(0, false)); 566ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5678ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5688ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5698ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5704beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 571ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5724beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 573ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5744beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5754beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 57614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 577f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 57814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 57914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 580f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 58118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 582f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 583f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 584ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, val)); 585f85e193739c953358c865005855253af4f68a497John McCall break; 586f85e193739c953358c865005855253af4f68a497John McCall } 587f85e193739c953358c865005855253af4f68a497John McCall 588ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 589ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 590f85e193739c953358c865005855253af4f68a497John McCall Visit(cast<ExprWithCleanups>(S)->getSubExpr(), Pred, Dst); 591ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 592f85e193739c953358c865005855253af4f68a497John McCall break; 593f85e193739c953358c865005855253af4f68a497John McCall 5941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 601f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 6021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 6031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 6041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 6061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCStringLiteralClass: 6071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6101b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 611e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 61256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 61361eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 614276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 6151b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Fall through. 6161b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 619bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 620bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 621bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 622477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 623bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 624f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 625e970c60dadaf22019743724bac879dbefbc4f5e3Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: 626ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks // No-op. Simply propagate the current state unchanged. 627e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 629540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 630ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 631892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 632ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 633540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 635e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 636ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 637e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 638ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 639e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 640b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 641892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::BlockDeclRefExprClass: { 642ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 643892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const BlockDeclRefExpr *BE = cast<BlockDeclRefExpr>(S); 644892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(BE, BE->getDecl(), Pred, Dst); 645ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 64667d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek break; 647892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 6481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 649c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 650ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 651c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 652ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 653c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 654c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 655e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 65603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 657e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 658ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 659e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 660ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 661e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 662e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6632de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 66418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 665ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 666ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(B, state->getSVal(B->getRHS()))); 667e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 668e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 66906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 670ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 671ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 672b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 673bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 674031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 675892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6769c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 67748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 67848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 679892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 68048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 681ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 682e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 683e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 68406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 685b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 686b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 687b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 688ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 689b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 690ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 69106fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 692e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 69306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 694744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 6957ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 6967ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 6977ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 6987ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 699ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 700892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 701ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7027ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7037ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7047ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 705856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 706ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 70703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 708856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 709ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 710856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 711856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 712856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7136b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 714ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 71503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7166b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 717ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7186b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7196b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 720e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 721e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 723e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7259c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 726e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 727ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 728e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 729e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 731e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 732ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 733892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 734ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 735e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 736f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 737f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 738ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 739892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 741f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 744e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 745ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 74756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 74856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 749ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 750e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 751e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 753bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 754ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 755bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 756ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 757bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 758bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 759892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 760ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 761892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 762892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 763ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 764e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 765892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 767e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 768ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 770ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 771e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 7721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7730835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 7740d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 7750d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 7760d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 7770d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 7780d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 779f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 780f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 781ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7829c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 783f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 784f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 785f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 786f85e193739c953358c865005855253af4f68a497John McCall 787f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 788f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 789f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 790f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 791f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 792f85e193739c953358c865005855253af4f68a497John McCall } 793f85e193739c953358c865005855253af4f68a497John McCall 794f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 795f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 796ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 797e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 798e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 799b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 80003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 801ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 80203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 80303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 80403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor if (!Materialize->getType()->isRecordType()) 805eea72a925f294225391ecec876a342771c09b635Ted Kremenek CreateCXXTemporaryObject(Materialize, Pred, Dst); 80603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 80703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Visit(Materialize->GetTemporaryExpr(), Pred, Dst); 808ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 80903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 81003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 81103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 812c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 813ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 814c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 815ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 816c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 81897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 819ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 820892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 821ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 822469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 823ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 82497ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 825ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 826892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 827ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 82897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 829af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 830af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 831ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 832af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 833ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 834af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 83638ac4f504bf8ed514520b5a82be538bdb0860687Ted Kremenek case Stmt::ObjCMessageExprClass: 837ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8384410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 839ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 840e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 842bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 843bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 844bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 845ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 846bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 847bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 8481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8491b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 850ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8511b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 852ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8531b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8558ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 856ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8578ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 858ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8598ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 8608ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 861f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 862ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 863f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 864f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 865ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 866e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 868e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 8699c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 870a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 871a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 872a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 873a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 874a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 875a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 876a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 8771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8789c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 87918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 880ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 881ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks state->BindExpr(SE, state->getSVal(LastExpr))); 882a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 883e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 884e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 8856987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 886892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::StringLiteralClass: { 88718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 888892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek SVal V = state->getLValue(cast<StringLiteral>(S)); 889ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state->BindExpr(S, V)); 890892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return; 891892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 892b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 89372374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 894ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 89503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 896ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 897031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 898892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 8999c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 90072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 90172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 902892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 903ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 90572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9061b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9071b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 909e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 910e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Block entrance. (Update counters). 911e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 912e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 91327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekvoid ExprEngine::processCFGBlockEntrance(ExplodedNodeSet &dstNodes, 91427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek GenericNodeBuilder<BlockEntrance> &nodeBuilder){ 91527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 91627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 91727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek const CFGBlock *block = nodeBuilder.getProgramPoint().getBlock(); 91827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ExplodedNode *pred = nodeBuilder.getPredecessor(); 91927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 92027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek if (nodeBuilder.getBlockCounter().getNumVisited( 92127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek pred->getLocationContext()->getCurrentStackFrame(), 92227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek block->getBlockID()) >= AMgr.getMaxVisit()) { 923ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 924b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 92527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 926e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 927e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 928e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 929e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 930e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 931e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 93218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekconst ProgramState *ExprEngine::MarkBranch(const ProgramState *state, 9339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Terminator, 93403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu bool branchTaken) { 9351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 93605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 93705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 938a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 9391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 9411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 94305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 9441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9452de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 9461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 94805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 94905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 95005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 95105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 9521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9539c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 9542de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 95503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 9561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9578e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(B, UndefinedVal(Ex)); 95805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 96105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 96256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 96356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 9641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 96605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 9671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9689c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 9691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 97156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 97205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 97356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9758e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 97605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 9771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 9791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 9811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9829c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 9838e0293406f9d62a293be6be3b1fb89d359f5ea40Ted Kremenek return state->BindExpr(C, UndefinedVal(Ex)); 98405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 98505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 98605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 98705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 9886ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 9896ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 9906ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 9916ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 9926ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 993294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 994294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const ProgramState *state, 995294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 996294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 9976ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 99803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 9996ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 10006ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10016ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10026ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 10036ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 100503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 10066ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 10076ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10086ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 10096ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10116ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 10126ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 10136ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 10146ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 10156ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10176ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 10186ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10196ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10206ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 10216ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 10226ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10236ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 10246ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10261397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek return state->getSVal(Ex); 10276ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 10286ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10299c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1030a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1031ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 10321aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1033a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1034a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1035b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 10361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 10371aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1038a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 10394e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1040b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1041b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 10421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104321028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 104421028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 104521028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 10460fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 10471aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet TmpCheckersOut; 10481aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks NodeBuilder CheckerBldr(Pred, TmpCheckersOut, BldCtx); 1049cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckerBldr, 10504e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 10518ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 10528ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks if (TmpCheckersOut.empty()) 10538ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10551aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder builder(CheckerBldr.getResults(), Dst, BldCtx, DstT, DstF); 10561aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks for (NodeBuilder::iterator I = CheckerBldr.begin(), 10571aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks E = CheckerBldr.end(); E != I; ++I) { 1058cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1059cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1060cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1061cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1062cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 10634e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks const ProgramState *PrevState = Pred->getState(); 1064cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal X = PrevState->getSVal(Condition); 1065cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1066cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1067cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1068cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1069cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1070cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1071cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1072cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1073cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1074cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1075cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 1076cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1077cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1078cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1079cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1080cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 10810835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1082b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 10830835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 10840835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 108573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 10864e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, true), true, PredI); 10874e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(PrevState, Term, false), false, PredI); 1088cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 10891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1091cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 10920835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1093cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1094cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 1095cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, true)) 10964e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, true), true, PredI); 1097cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1098cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1099cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1101cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1102cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 1103cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const ProgramState *state = PrevState->assume(V, false)) 11044e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks builder.generateNode(MarkBranch(state, Term, false), false, PredI); 1105cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1106cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1107cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1108cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1109f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1110f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1111e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1112754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1113ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1114754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 111518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 11161397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(builder.getTarget()); 11171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1118754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1119754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1120754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 11214a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1122754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1123754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 11241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1125d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1126754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11271c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1128ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 11291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1130ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 113124f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1132a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1133754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1134754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1135754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1137b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1138754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1139754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 11401c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1141754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 11422055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 11432055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 11442055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1145754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1146754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 11471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1148754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1149b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 11501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1151754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1152a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1153754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1154f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1155d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 115673099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1157e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndOfFunction(EndOfFunctionNodeBuilder& builder) { 115873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek StateMgr.EndPath(builder.getState()); 1159af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis getCheckerManager().runCheckersForEndPath(builder, *this); 116073099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 116173099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1162d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1163daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1164e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1165d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 116618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = builder.getState(); 11679c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 11681397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal CondV_untested = state->getSVal(CondE); 1169daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 11705b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 11712055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1172b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 11732055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 11742055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1175daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1176daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 11775b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1178692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 117918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *DefaultSt = state; 118034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 118134feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 118234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 11831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1185e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1186e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1187e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1188e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 11899c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 119072afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 119172afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 119285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 119385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1195daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 119685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 119785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 119885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 119914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 120014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 12011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1202daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1203daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1204aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 12051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 120614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 120785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 12089c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 120948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1210b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 12111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 121218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = state->assume(Res, true)) { 1213a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 12141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1215daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1216daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1217daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 12181c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1219daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1220daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1222daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1223daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 122448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 122518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek if (const ProgramState *stateNew = DefaultSt->assume(Res, false)) { 122648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 122748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 122848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 122948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 123048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 123148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 123248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 12335014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1234b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 123514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 123685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 123714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 12381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 123985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 124085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 12411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1243daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 12441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12454d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 12464d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12474d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12484d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 12494d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 12504d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 12514d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 12524d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 12534d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 12544d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 12554d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 12564d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 12574d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 12584d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 12594d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 12604d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 12614d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 12624d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1263daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1264daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1265e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1266ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1267e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1268d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1269d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1270d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1271d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1272aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1273ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 127418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 12756d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 12769c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1277892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1278d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1279a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1280892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1281892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1282892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1283892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1284892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1285892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1286892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1287852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 12886d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1289ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1290ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1291852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1292892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12939c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1294892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1295c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 1296ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V)); 12976d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1298892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 12999c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1300c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1301ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, V), false, 0, 1302ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 13036d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 13041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 13056d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 13066d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 13073271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 13083271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1309540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 13109c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 13119c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 13129c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 13131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13149c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 13159c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1316892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 13171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13188f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 13198f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 13208f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1321aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1322ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 13238f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 13248f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 132518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = (*it)->getState(); 13268f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek SVal V = state->getLValue(A->getType(), state->getSVal(Idx), 13278f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek state->getSVal(Base)); 13288f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 1329ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, *it, state->BindExpr(A, V), 1330ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 13311b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1332540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1333540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1334469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 13359c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 13369c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 13371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1338aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 13395bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 13405bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 13415bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1342ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 13435bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1344ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 13455bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 13465bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 13475bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 13485bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1349892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 135086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 135186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1352e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 135318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 1354e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr); 1355e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1356e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1357e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1358e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1359e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1360e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 1361ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, UnknownVal())); 1362e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1363e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1364892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1365e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1366e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1367e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1368d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1369e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1370e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1371e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 1372ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(M, Pred, state->BindExpr(M, L), false, 0, 1373ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1374ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1375ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1376e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek evalLoad(Dst, M, Pred, state, L); 1377ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1378ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1379469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1380469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 13819c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 13829c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 13839c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 138493bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 1385ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks SVal location, SVal Val, bool atDeclInit, 1386ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::Kind PointKind) { 1387b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1388b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1389fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1390fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 1391ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks StoreE, *this, PointKind); 1392b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1393d231d0130a95336610ab9a42eaeb2cdac19992f3Anna Zaks // TODO:AZ Remove TmpDst after NB refactoring is done. 13946b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1395aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 13966b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 1397b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1398b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 139993bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose const ProgramState *state = (*I)->getState(); 1400a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1401b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1402b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1403b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1404f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1405fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1406fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1407fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1408f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 14091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1410ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(StoreE, *I, state, false, 0, PointKind); 1411b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1412ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14136b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1414a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1415a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 14169c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1417a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1418e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1419e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1420e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1421a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1422a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1423a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 14249c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 14259c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 14269c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 142718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, SVal Val, 1428ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 142914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 143014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 143114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 143214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 143314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 143414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 143514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertySetter(prop.getPropRefExpr(), 14364410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek StoreE, Val), Pred, Dst); 143714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 143814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 14391b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1440b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 14419c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, LocationE, Pred, state, location, tag, false); 14421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1443b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 14441b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1445b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 144673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 144773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1448a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1449b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 1450ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false, 1451ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostStoreKind); 14521b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 14531b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 14549c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, const Expr *Ex, 14559c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 145618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1457ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1458cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 14591b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 146014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 146114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis loc::ObjCPropRef prop = cast<loc::ObjCPropRef>(location); 146214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return VisitObjCMessage(ObjCPropertyGetter(prop.getPropRefExpr(), Ex), 14634410a935e8d8ee3c903b858bbf74ca24fce629b5Ted Kremenek Pred, Dst); 146414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 146514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1466852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1467852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1468852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 14699697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 14709697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1471b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1472018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1473852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1474ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1475ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1476852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 14779c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Tmp, Ex, Pred, state, location, &loadReferenceTag, 1478852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1479852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1480852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1481852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1482db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 14831397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek location = state->getSVal(Ex); 14849c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, *I, state, location, tag, LoadTy); 1485b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1486852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1487852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1488852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1489b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14909c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLoadCommon(Dst, Ex, Pred, state, location, tag, LoadTy); 1491852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1492852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 14939c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, const Expr *Ex, 14949c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 149518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1496ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, QualType LoadTy) { 1497b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 14981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1499b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 15009c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalLocation(Tmp, Ex, Pred, state, location, tag, true); 1501b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 15021b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1503b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1504aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 150573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 150673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1507b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15081b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1509b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1510db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 151196ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1512b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1513b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1514ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->BindExpr(Ex, UnknownVal()), 1515ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1516b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1517b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 151896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 151996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek LoadTy = Ex->getType(); 152096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1521ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, *NI, state->bindExprAndLocation(Ex, location, V), 1522ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1523b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1524d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 15251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 15261b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1527d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, const Stmt *S, 15289c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 152918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state, SVal location, 1530ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool isLoad) { 1531aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 153200b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1533769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1534b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1535b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1536b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15379c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1538ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1539aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1540ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1541eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1542eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1543eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1544eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1545eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1546eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1547eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1548eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1549ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1550ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1551ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1552ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1553ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state, false, &etag); 15540296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1555ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1556ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, S, 1557eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis *this); 1558ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1559ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1560ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 1561d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisbool ExprEngine::InlineCall(ExplodedNodeSet &Dst, const CallExpr *CE, 15621c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu ExplodedNode *Pred) { 1563b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek return false; 1564b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1565b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Inlining isn't correct right now because we: 1566b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (a) don't generate CallExit nodes. 1567b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // (b) we need a way to postpone doing post-visits of CallExprs until 1568b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // the CallExit. This means we need CallExits for the non-inline 1569b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // cases as well. 1570b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1571b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#if 0 157218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 15731c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const Expr *Callee = CE->getCallee(); 15741c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu SVal L = state->getSVal(Callee); 15751c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 15761c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu const FunctionDecl *FD = L.getAsFunctionDecl(); 15771c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu if (!FD) 15781c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu return false; 15791c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1580b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Specially handle CXXMethods. 1581b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMethodDecl *methodDecl = 0; 1582b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1583b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek switch (CE->getStmtClass()) { 1584b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek default: break; 1585b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: { 1586b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXOperatorCallExpr *opCall = cast<CXXOperatorCallExpr>(CE); 1587b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = 15885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner dyn_cast_or_null<CXXMethodDecl>(opCall->getCalleeDecl()); 1589b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1590b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1591b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXMemberCallExprClass: { 1592b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const CXXMemberCallExpr *memberCall = cast<CXXMemberCallExpr>(CE); 1593b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek const MemberExpr *memberExpr = 1594b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek cast<MemberExpr>(memberCall->getCallee()->IgnoreParens()); 1595b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek methodDecl = cast<CXXMethodDecl>(memberExpr->getMemberDecl()); 1596b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek break; 1597b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1598b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek } 1599b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1600b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1601b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1602b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1603c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if the function definition is in the same translation unit. 1604c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (FD->hasBody(FD)) { 160519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 16061d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AMgr.getStackFrame(AMgr.getAnalysisDeclContext(FD), 160719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu Pred->getLocationContext(), 1608056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 1609c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Now we have the definition of the callee, create a CallEnter node. 161019b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1611c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1612c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 1613c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu Dst.Add(N); 1614c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1615c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 16161c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 1617c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // Check if we can find the function definition in other translation units. 1618c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (AMgr.hasIndexer()) { 16191d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *C = AMgr.getAnalysisDeclContextInAnotherTU(FD); 1620c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu if (C == 0) 1621c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 162219b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *stackFrame = 162319b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu AMgr.getStackFrame(C, Pred->getLocationContext(), 1624056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks CE, currentBuilderContext->getBlock(), currentStmtIdx); 162519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu CallEnter Loc(CE, stackFrame, Pred->getLocationContext()); 1626c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu ExplodedNode *N = Builder->generateNode(Loc, state, Pred); 16271c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu Dst.Add(N); 1628c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return true; 1629c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 1630b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek 1631b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek // Generate the CallExit node. 1632c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 1633c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return false; 1634b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek#endif 16351c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu} 16361c625f25055331bf76ab5479a8060d2b0f61e8b8Zhongxing Xu 16376c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 16386c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 16396c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 16406c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 16416c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 16426c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 16436c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 16446c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1645d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 164603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex) { 1647aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 164886b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1649031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1650031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1651b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1652b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1653b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 16541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1655b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1656b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 16571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1658b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 165918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 16601397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(Ex); 16615b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (nonloc::SymExprVal *SEV = dyn_cast<nonloc::SymExprVal>(&V)) { 16626c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 16636c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 16646c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 166548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 16666c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateTrue = state->assume(*SEV, true)) { 166786b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 16686c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Val); 1669ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 167048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 16736c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek if (const ProgramState *StateFalse = state->assume(*SEV, false)) { 167486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 16756c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Val); 1676ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 167748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 167848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 167948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 168048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 168148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 16829c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 16839c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1684ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, A->begin_outputs(), A->end_outputs(), Pred, Dst); 16851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1686ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 16879c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperOutputs(const AsmStmt *A, 168803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator I, 168903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_outputs_iterator E, 16909c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, ExplodedNodeSet &Dst) { 1691ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1692ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, A->begin_inputs(), A->end_inputs(), Pred, Dst); 1693ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1694ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 16951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1696031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1697892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Visit(*I, Pred, Tmp); 1698ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 16991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1700bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end();NI != NE;++NI) 1701ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperOutputs(A, I, E, *NI, Dst); 1702ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1703ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 17049c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmtHelperInputs(const AsmStmt *A, 170503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator I, 170603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu AsmStmt::const_inputs_iterator E, 17079c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 17089c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst) { 1709ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek if (I == E) { 1710aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1711ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // We have processed both the inputs and the outputs. All of the outputs 17121c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu // should evaluate to Locs. Nuke all of their values. 17131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1714ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // FIXME: Some day in the future it would be nice to allow a "plug-in" 1715ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // which interprets the inline asm and stores proper results in the 1716ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek // outputs. 17171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = Pred->getState(); 17191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 172003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1721ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek OE = A->end_outputs(); OI != OE; ++OI) { 17221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17231397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal X = state->getSVal(*OI); 17241c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 17251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17261c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<Loc>(X)) 17273ff12591494a3cb3d3a24427975df58714ac3b2fTed Kremenek state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1728ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1730ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(A, Pred, state); 1731ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek return; 1732ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1734031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 1735ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek Visit(*I, Pred, Tmp); 17361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1737ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek ++I; 17381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1739e1ccccff777f6bad6b25e9c6a762f98fd8003181Ted Kremenek for (ExplodedNodeSet::iterator NI = Tmp.begin(), NE = Tmp.end(); NI!=NE; ++NI) 1740ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek VisitAsmStmtHelperInputs(A, I, E, *NI, Dst); 1741ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1742ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1743094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek 1744094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1745e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1746ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1747ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1748aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1749d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1750e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 17513b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1752aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1753aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 175447491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1755aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1756006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1757006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1758006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1759d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1760ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 17619c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 17621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 176410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 176510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1766a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 17679dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 17684a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 17694a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 17704a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 17715e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 17722ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 17732ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1774a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17768cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 17778cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 17782055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1779a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1780a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 17811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17829c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 178553ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1786803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1787803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1788aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 17891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1790aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 1791aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockEntranceKind: 17921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1793aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 1794aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1796aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1797aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1798aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 17991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1800102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1801102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1802102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1803102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1804102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallExitKind: 1805102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallExit"; 1806102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1807102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 1808aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 18095f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 18109c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 18118c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 18128c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1814e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1815e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 18188c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1819642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18207da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1821a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 18227da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 18238c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18255f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 18261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 18275f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 18287090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 18297090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 18307090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 18317090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 18327090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 18331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 183410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 183510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 183610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 18378c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 18388c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 18398c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 18408c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 18418c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 18428c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 18438c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 18448c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 18458c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 18468c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 18478c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 18488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 18498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 18508c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 18518c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 18528c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 185310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 18568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 18578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 18589c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1859aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1860aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18629c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 18631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1864e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 18651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1866b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1867e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1868e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 18691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18709b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 18719b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1872642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 18737da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1874a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 18759b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1877daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 18789c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 18791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 18819c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1882daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1883e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1884e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 18851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18869c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1887daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1888e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1889daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1891daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1892daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1893daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1894daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1895daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1896daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1897daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 18981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 1899daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 1900daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1901daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 1902b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 1903b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 1904b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 1905b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 1906b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 1907b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 1908b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 19091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 1910b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1912b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 1913b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 19141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 191510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 191610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 191710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19184a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 19194a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 19203b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 192110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 1922aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1923aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 19241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 192518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *state = N->getState(); 19268673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek Out << "\\|StateID: " << (void*) state 19278673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 1928c179a7fbb294fe3ff6cf5479f6239a10f39628c7Zhongxing Xu state->printDOT(Out, *N->getLocationContext()->getCFG()); 1929ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1930ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1931ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1932ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 1933ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 1934ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 1935ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 1936aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 1937aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 1938aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 19391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 1940aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 1941aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 1942ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 19437ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 19449c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 19457ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 1946031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 1947031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 1948031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 19497ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 19507ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 1951ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 1952ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 1953d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 19541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 1955ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 1956031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 1957940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1958940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 1959940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 1960940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 1961940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 1962940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 1963940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 1964404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 1965404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 1966404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1967404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis const BugReport &R = **EQ.begin(); 1968404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis ExplodedNode *N = const_cast<ExplodedNode*>(R.getErrorNode()); 1969404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 1970940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 19711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19727ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 1973ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 1974493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 1975493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1976493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 1977ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 1978d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 19791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1980493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 1981493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 1982493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 1983493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 1984493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 1985493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1986d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 1987493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 1988493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 1989493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 19901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1991031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 1992493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 1993cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 19946cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 1995cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1996d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 19971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19983b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 1999e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2000e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2001ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2002