ExprEngine.cpp revision fa06f0464a04bb7fce1fcfb3780d151bb029e00c
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 16c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#define DEBUG_TYPE "ExprEngine" 17c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks 1843dee220252ef0b42c5f8a3bb1eca97f84f2565fArgyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/CheckerManager.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 209b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" 21f540c54701e3eeb34cb619a3a4eb18f1ac70ef2dJordan Rose#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h" 229b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 23199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2416f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 26337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 271b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2816f0049415ec596504891259e2a83e19871c0d52Chris Lattner#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" 32c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 334323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 340f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 38b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 399ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 40b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 41ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 42c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 43c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 44749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 45749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 46749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 47749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 48749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 49749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 505903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 515903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 53e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 54bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 55bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 56bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 573fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 586a86082f3a06a2dcceaaf63f78a0e52d64bcbaa3Anna Zaks SetOfConstDecls *VisitedCallees, 593bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks FunctionSummariesTy *FS) 6025e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 611d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 62e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine(*this, VisitedCallees, FS), 63d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 64c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6532a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 68c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 698ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 708ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 71a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 72c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 73e62f048960645b79363408fdead53fec2a063c52Anna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 74d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 75d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 76d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 77d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 78d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 79c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 8050a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 81d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 82cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 83e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 8450a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8550a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 86e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 87e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 88e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 89e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 908bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 918bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 92a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 9552e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 975974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 98a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1005974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 110b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1115974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 114b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1151397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1169c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 117c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 122b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1245974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 125b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1268bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1275974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 12852e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 129a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 130a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 131a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 132a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 133a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 134a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 135a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 136a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 137a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 138a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1465974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 15410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek loc::MemRegionVal L = svalBuilder.getCXXThis(MD, SFC); 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 156a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1605974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 161cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 162a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 16452e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 165e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 166e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 167e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 168e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 169e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 170e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1719c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1738bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 174fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 175fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1788bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 179183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 180c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 181c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1828bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1838bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 18435bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 185537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 18666c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 187740d490593e0de8732a697c9f77b90ddd463863bJordan Rose const CallEvent *Call) { 18835bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 18966c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 190c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 191c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 193dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 194dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 195dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 196dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 197e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 19830726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 199ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 200ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 201ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 202ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 203ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 204ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 205ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2069c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2073c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 210ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 213ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2153c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 219ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2203c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2219c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentBuilderContext = 0; 2239c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2249c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 225ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 226ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 227ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 228ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 229ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 230ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 231ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 232ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 233ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 234ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2359e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 236ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 237ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 238ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 239ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 241ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 242ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 24385d7e01cf639b257d70f8a129709a2d7594d7b22Jordan Rose if (CallEvent::mayBeInlined(S.getStmt())) 244ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 245ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 246ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 2520b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 2530b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 2540b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const LocationContext *LC, 2550b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 2560b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 2570b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 2580b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ReferenceStmt == 0) && "PreStmt is not generally supported by " 2590b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "the SymbolReaper yet"); 2600b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 2610b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = Pred->getState(); 2620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks SymbolReaper SymReaper(LC, ReferenceStmt, SymMgr, getStoreManager()); 2630b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2640b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 2650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 2670b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 2680b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 2690b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2700b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 271241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 27277d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 273f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 274f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 2756bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2766bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2776bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2786bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 2790b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(Pred, Out, *currentBuilderContext); 280fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, &cleanupTag, K); 2811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2826bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 2836bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 285fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 2860b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 2870b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 288183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 289fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 290fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 291fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 2920b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Out, *currentBuilderContext); 293fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 294fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 2958bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 2966bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2976bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3006bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3036bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3056bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3108bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 312fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, &cleanupTag, K); 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 31477d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3160b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3170b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3180b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3190b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3200b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 3210b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt = S.getStmt(); 3230b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 3240b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt->getLocStart(), 3250b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 3261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3270b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 3280b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks EntryNode = Pred; 3290b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 3300b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (shouldRemoveDeadBindings(AMgr, S, Pred, EntryNode->getLocationContext())){ 3310b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks removeDead(EntryNode, CleanedStates, currentStmt, 3320b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Pred->getLocationContext(), currentStmt); 3330b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 3340b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedStates.Add(EntryNode); 3350b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 337dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 3380b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 3390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 340dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 342dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 343dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 344ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 345ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 346dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 347dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 349e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 350846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 351846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3520a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 353e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 354e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 355d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 356056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 357ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 358888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose NodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 359ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3603a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 3613a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 362cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 363563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 364563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 365563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose BMI->getSourceLocation(), 366563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose "Error evaluating initializer"); 367563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose 368563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose // We don't set EntryNode and currentStmt. And we don't clean up state. 369056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 370056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 371056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 3733a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal thisVal = State->getSVal(svalBuilder.getCXXThis(decl, stackFrame)); 3749dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 3753a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Evaluate the initializer, if necessary 37600eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3773a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Constructors build the object directly in the field, 3783a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // but non-objects must be copied in from the initializer. 3793a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose if (!isa<CXXConstructExpr>(BMI->getInit())) { 3803a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal FieldLoc; 3813a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose if (BMI->isIndirectMemberInitializer()) 3823a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getIndirectMember(), thisVal); 3833a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose else 3843a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose FieldLoc = State->getLValue(BMI->getMember(), thisVal); 3853a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 3863a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal InitVal = State->getSVal(BMI->getInit(), stackFrame); 3873a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose State = State->bindLoc(FieldLoc, InitVal); 3883a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose } 389056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 390563ea2335d7d0df44bbfe8941f64523e8af1fc14Jordan Rose assert(BMI->isBaseInitializer() || BMI->isDelegatingInitializer()); 391888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // We already did all the work when visiting the CXXConstructExpr. 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 393dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 3943a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Construct a PostInitializer node whether the state changed or not, 3953a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // so that the diagnostics don't get confused. 3963a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose PostInitializer PP(BMI, stackFrame); 3973a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // Builder automatically add the generated node to the deferred set, 3983a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose // which are processed in the builder's dtor. 3993a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Bldr.generateNode(PP, State, Pred); 4003a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 401dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 402dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4039c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4049c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 405d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 406ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 407ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4094ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 410056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4114ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4124ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 413056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4144ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4154ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 416056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4174ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4184ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 419056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4214ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 424ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 425dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 426dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 429056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 430056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 431056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4328bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 433056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4342210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4352210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4362210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4372210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4382210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4392210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 440056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 441b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 442888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXDestructor(varType, cast<loc::MemRegionVal>(dest).getRegion(), 443056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4444ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4454ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 446d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 447888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 448888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 449888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose ProgramStateRef State = Pred->getState(); 450888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 451888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 452888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose Loc ThisPtr = getSValBuilder().getCXXThis(CurDtor, 453888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose LCtx->getCurrentStackFrame()); 454888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal ThisVal = Pred->getState()->getSVal(ThisPtr); 455888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 456888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose // Create the base object region. 457888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose QualType BaseTy = D.getBaseSpecifier()->getType(); 458888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose SVal BaseVal = getStoreManager().evalDerivedToBase(ThisVal, BaseTy); 459888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose 460888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXDestructor(BaseTy, cast<loc::MemRegionVal>(BaseVal).getRegion(), 461888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose CurDtor->getBody(), Pred, Dst); 462888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose} 4634ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 464d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 4653a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ExplodedNode *Pred, ExplodedNodeSet &Dst) { 4663a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const FieldDecl *Member = D.getFieldDecl(); 4673a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose ProgramStateRef State = Pred->getState(); 4683a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const LocationContext *LCtx = Pred->getLocationContext(); 4693a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 4703a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose const CXXDestructorDecl *CurDtor = cast<CXXDestructorDecl>(LCtx->getDecl()); 4713a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose Loc ThisVal = getSValBuilder().getCXXThis(CurDtor, 4723a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose LCtx->getCurrentStackFrame()); 4733a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose SVal FieldVal = State->getLValue(Member, cast<Loc>(State->getSVal(ThisVal))); 4743a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose 4753a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose VisitCXXDestructor(Member->getType(), 4763a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose cast<loc::MemRegionVal>(FieldVal).getRegion(), 4773a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose CurDtor->getBody(), Pred, Dst); 4783a0a9e3e8bbaa45f3ca22b1e20b3beaac0f5861eJordan Rose} 4794ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 480d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 481056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 482056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4839c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 48448b6247804eacc262cc5508e0fbb74ed819fbb6eJordan Rosevoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4856889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4860bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4870bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4880bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4896889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4906889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4910bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 492f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 493f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 494892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 495f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 496e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 497e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 498e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 500ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 501e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 5021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 503e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 504f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 505f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 5071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 5081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 5091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 5109be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 511c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 5121b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5131b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5146ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5154ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 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: 52501d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 526ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 527fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose const ExplodedNode *node = Bldr.generateSink(S, Pred, Pred->getState()); 528ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 529c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 530c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5315fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5325fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5335fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 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: 555534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5561b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5571b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 558d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 559d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 560ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5611b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5621b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5634ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCSubscriptRefExprClass: 5644ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose case Stmt::ObjCPropertyRefExprClass: 5654ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose llvm_unreachable("These are handled by PseudoObjectExpr"); 5664ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48Jordan Rose 5678ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5688f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5698bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5705eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5715eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 572ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5738ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5748ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5758ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5764beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 577ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5784beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 579ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5804beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5814beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 582ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 583e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 584f85e193739c953358c865005855253af4f68a497John McCall break; 585f85e193739c953358c865005855253af4f68a497John McCall 5861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 593f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 602e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 60356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 60461eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 605276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 606337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6071b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 6081b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6091b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 610bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 611bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 612bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 613c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 614c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 615477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6161a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 617bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 618f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 619e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 620e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 621cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 62269a0e5021c5c49a34aa25cd89b1e613a52097e65Jordan Rose case Stmt::SubstNonTypeTemplateParmExprClass: 623bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 624bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 625bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 626bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 627bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 628bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 629e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 630bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6321a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 63370fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 63470fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 63570fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 63670fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 6371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 64570fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 64670fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 64770fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6521a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6541a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6551a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6561a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6571a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6621a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6631a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 664540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 665ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 666892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 667ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 668540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 670e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 671ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 672e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 673ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 675b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 6768cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 6778cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 6788cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 6798cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 6808cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 6818cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 682c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 683ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 684c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 685ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 686c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 687c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 688e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 68903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 691ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 692e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 694e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 695e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6962de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6978bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 698ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 7005eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 7015eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 702e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 703e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 70406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 705ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 706ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 707b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 708bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 709031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 710892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7119c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 71248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 71348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 714892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 71548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 716ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 717e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 718e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 71906fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 720b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 721b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7229fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7239fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 725b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 726ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 72706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 728e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 729337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 730337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 731337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 732337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 733337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 734337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 735337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 73606fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 737744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 738888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose case Stmt::CXXConstructExprClass: { 739ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 740888c90ac0ef6baf7d47e86cf5cc4715707d223b1Jordan Rose VisitCXXConstructExpr(cast<CXXConstructExpr>(S), Pred, Dst); 741ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7427ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7437ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7447ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 745856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 746ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 748856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 749ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 750856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 751856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 752856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7536b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 754ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7566b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 757ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7586b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7596b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 760e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 761e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 763e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 764ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7659c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 766e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 767ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 768e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 771e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 772ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 773892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 774ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 775e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 776f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 777f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 778ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 779892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 780ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 781f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 784e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 785ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 78756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 78856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 789ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 790e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 791e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 793bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 794ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 795bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 796ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 797bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 798bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 799892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 800ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 801892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 802892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 803ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 804e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 805892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 807e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 808ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 809e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 810ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 811e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8130835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8140d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8150d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8160d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8170d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8180d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 819f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 820f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 821ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 823f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 824f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 825f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 826f85e193739c953358c865005855253af4f68a497John McCall 827f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 828f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 829f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 830f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 831f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 832f85e193739c953358c865005855253af4f68a497John McCall } 833f85e193739c953358c865005855253af4f68a497John McCall 834f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 835f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 836ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 837e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 838e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 839b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 84003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 841ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 84303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 844e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 845e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 84603e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 847e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 848ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 84903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 85003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 85103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 852c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 853ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 854c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 855ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 856c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 859ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 860892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 861ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 862469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 863ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 86497ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 865ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 866892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 867ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 86897ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 869af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 870af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 871ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 872af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 873ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 874af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 876d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose case Stmt::ObjCMessageExprClass: 877ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 878d563d3fb73879df7147b8a5302c3bf0e1402ba18Jordan Rose VisitObjCMessage(cast<ObjCMessageExpr>(S), Pred, Dst); 879ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 880e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 882c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::ObjCAtThrowStmtClass: 883c32a453e40b2c8878fed10512fb2f570b7aba576Jordan Rose case Stmt::CXXThrowExprClass: 884bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 885bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 886fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateSink(S, Pred, Pred->getState()); 887bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 8881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8891b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 890ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8911b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 892ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8931b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 8941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8958ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 896ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8978ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 898ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 8998ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9008ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 901f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 902ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 903f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 904f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 905ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 906e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 908e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9099c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 910a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 911a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 912a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 913a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 914a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 915a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 916a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9189c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9198bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 920ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9215eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9235eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 924a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 925e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 926e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9276987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 92872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 929ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 93003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 931ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 932031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 933892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9349c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 93572374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 93672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 937892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 938ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9391b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 94072374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9414b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9424b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9434b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9448bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9454b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9464b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9495eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9504b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9514b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9525eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9554b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9564b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9574b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9584b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9591b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9611b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9625903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9645903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9655903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9675903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 96828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose const Stmt *CE = CalleeSF->getCallSite(); 9695903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9705903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9715903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9725903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9735903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9745903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9755903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9765903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9775903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 9785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 98028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // processing the call. 9810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 9825903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 98328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (isa<PreImplicitCall>(&L)) 98428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose continue; 985852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose if (isa<CallEnter>(&L)) 986852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose continue; 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 98828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SP->getStmt() == CE) 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 993253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 99928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // Note that CE is permitted to be NULL! 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1010253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1011253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1012253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1013253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1014253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1024c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1025253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1026253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NodeBuilderWithSinks &nodeBuilder) { 102727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 102827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1029c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 103027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1031c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1032ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1033253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1034fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose nodeBuilder.generateSink(pred->getState(), pred, &tag); 1035749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1036749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1037749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10393bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10405903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10415903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10423bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1043e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10443bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 10455903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10465903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10475903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10485903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1049b47dbcbc12430fdf3e5a5b9f59cdec5480e89e75Anna Zaks if ((!AMgr.NoRetryExhausted && replayWithoutInlining(pred, CalleeLC))) 1050253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1051253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1053749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1054253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1055253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1056253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 105727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1058e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1059e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1060e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1061e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1062e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1063e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 10656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 10666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 10676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 10686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1069294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 10708bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1071294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 10725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1073294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 10746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 107503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 10766ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 10776ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10786ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10796ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 10806ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 10811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 10836ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 10846ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10856ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 10866ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 10871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10886ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 10896ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 10906ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 10916ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 10926ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10946ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 10956ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 10966ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 10976ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 10986ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 10996ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11006ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11016ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11035eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11046ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11056ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11063f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenekstatic const Stmt *ResolveCondition(const Stmt *Condition, 11073f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const CFGBlock *B) { 11083f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 11093f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 11103f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11113f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek const BinaryOperator *BO = dyn_cast<BinaryOperator>(Condition); 11123f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 11133f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11143f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11153f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // For logical operations, we still have the case where some branches 11163f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // use the traditional "merge" approach and others sink the branch 11173f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // directly into the basic blocks representing the logical operation. 11183f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // We need to distinguish between those two cases here. 11193f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11203f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // The invariants are still shifting, but it is possible that the 11213f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // last element in a CFGBlock is not a CFGStmt. Look for the last 11223f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // CFGStmt as the value of the condition. 11233f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend(); 11243f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek for (; I != E; ++I) { 11253f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGElement Elem = *I; 11263f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek CFGStmt *CS = dyn_cast<CFGStmt>(&Elem); 11273f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!CS) 11283f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek continue; 11293f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (CS->getStmt() != Condition) 11303f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek break; 11313f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11323f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 11333f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11343f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek assert(I != E); 11353f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11363f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek while (Condition) { 11373f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek BO = dyn_cast<BinaryOperator>(Condition); 11383f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (!BO || !BO->isLogicalOp()) 11393f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek return Condition; 11403f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = BO->getRHS()->IgnoreParens(); 11413f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek } 11423f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek llvm_unreachable("could not resolve condition"); 11433f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek} 11443f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11459c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1146a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1147ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11481aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1149a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1150a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1151f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1152f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1153b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11551aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1156a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11574e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1158b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1159b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11613f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11623f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek // Resolve the condition in the precense of nested '||' and '&&'. 11633f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek if (const Expr *Ex = dyn_cast<Expr>(Condition)) 11643f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = Ex->IgnoreParens(); 11653f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek 11663f635c08b2d0b2d5bafb38da09589cb238407faaTed Kremenek Condition = ResolveCondition(Condition, BldCtx.getBlock()); 116721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 116821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 116921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 11700fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1171f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1172f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 11734e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 11748ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1175f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 11768ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 11771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1178f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1179f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1180f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1181cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1182cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1183cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1184cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1185cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 11868bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 11875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1188cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1189cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1190cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1191cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1192cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1193cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1194cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1195cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1196cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1197cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1198cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 11995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1200cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1201cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1202cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1203cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1204cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12050835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1206b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12070835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12085eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12090835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 121073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 1211829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, true, PredI); 1212829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(PrevState, false, PredI); 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12170835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 1221829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(state, true, PredI); 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1226cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1227cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 1229829846b5002d7f8d6a54b9c58c3ecf7cac56d2ccTed Kremenek builder.generateNode(state, false, PredI); 1230cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1231cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1232cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1233cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1234f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1235f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1236f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1237e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1238754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1239ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1240754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12418bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12425eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1244754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1245754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1246754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12474a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1248754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1249754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1251d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1252754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12531c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1254ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1256ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 125724f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1258a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1259754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1260754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1261754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1263b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1264754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1265754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12661c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1267754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 12682055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 12692055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 12702055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1271754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1272754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1275b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 12761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1277754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1278a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1279754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1280f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1281d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 128273099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1283af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1284af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1285af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1286af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 12874d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 128873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 128973099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1290d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1291daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1292e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1293d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 12948bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12959c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 12965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1297daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 12985b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 12992055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1300b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13012055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13022055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1303daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1304daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13055b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1306692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13078bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 130834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 130934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 131034feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 131234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1313e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1314e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1315e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1316e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 131872afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 131972afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 132085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 132185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1323daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 132485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 132585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 132685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 132714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 132814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1330daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1331daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1332aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 133414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 133585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13369c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 133748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1338b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13408bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1341a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1343daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1344daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1345daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13461c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1347daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1348daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1350daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1351daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 135248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13538bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 135448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 135548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 135648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 135748569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 135848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 135948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 136048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13615014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1362b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 136314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 136485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 136514a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 13661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 136885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 13691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1371daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13734d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 13744d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 13754d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 13764d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 13774d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 13784d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 13794d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 13804d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 13814d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 13824d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 13834d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 13844d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 13854d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 13864d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 13874d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 13884d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 13894d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 13904d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1391daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1392daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1393e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1394ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1395e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1396d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1397d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1398d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1399d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1400aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1401ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14028bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14035eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14046d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14059c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1406591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1407d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1408a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1409892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1410892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1411892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1412892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1413892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1414892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1415892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1416852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14176d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 1418fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1419ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1420852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1421892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14229c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1423591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1424c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14255eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14266d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1427892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14289c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1429c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 1430fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), 0, 1431ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14326d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14331b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14345aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 1435fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose // FIXME: Compute lvalue of field pointers-to-member. 1436fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 0, 1437fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 14385aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14395aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14405aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 1441fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose llvm_unreachable("Support for this Decl not implemented."); 14423271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14433271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1444540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14459c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14469c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14479c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14499c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14509c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1451892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14538f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14548f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14558f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1456aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1457ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14588f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14598f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14605eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14625eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 14635eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 14645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1465591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 1466fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 0, 1467fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose ProgramPoint::PostLValueKind); 14681b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1469540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1470540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1471469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 14729c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 14736889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 14741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14756889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 14766889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 14775bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 147810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 14795bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 1480591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(M->isGLValue()); 1481ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 14825bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1483ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 14845bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 14855bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 148610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 148710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 148810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(member)) { 148910f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.takeNodes(Pred); 149010f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek SVal MDVal = svalBuilder.getFunctionPointer(MD); 149110f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek ProgramStateRef state = 149210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Pred->getState()->BindExpr(M, Pred->getLocationContext(), MDVal); 149310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.generateNode(M, Pred, state); 149410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek return; 149510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek } 149610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 149710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 14985bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1499892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 150086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 150186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1502e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15038bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15045eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15055eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1506e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1507e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1508e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1509e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1510e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1511e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15125eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1513e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1514e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1515892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1516e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1517e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1518e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1519d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1520e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1521e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 15226b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (M->isGLValue()) { 15236b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (field->getType()->isReferenceType()) { 15246b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose if (const MemRegion *R = L.getAsRegion()) 15256b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = state->getSVal(R); 15266b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose else 15276b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose L = UnknownVal(); 15286b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } 15296b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose 1530fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), 0, 1531ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 15326b4be2ef4ce49717ff972434975ce3c34c9a1c4cJordan Rose } else { 1533ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1534bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1535ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1536ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1537469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1538469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15399c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15409c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15419c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 154293bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15433d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1544b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1545b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1546fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1547fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15483d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15493d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1550b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15516b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1552aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15536b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15543d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1555b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1556b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15573d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15583d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1559a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1560b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1561b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1562b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1563f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1564fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1565fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1566fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1567f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15693d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15703d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15713d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 15723d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 15733d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 1574fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(L, state, PredI); 1575b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1576ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15776b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1578a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1579a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 15809c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1581a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 15822e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1583e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 15842e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1585a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1586a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1587a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 15889c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 15899c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 15909c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 15918bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1592ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 159314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 159414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 159514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 159614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 15971b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1598b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1599bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 16001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1601b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16021b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1603b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 160473c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 160573c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1606a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1607b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16083d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16091b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16101b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1611bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1612bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1613bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1614bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1615bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1616bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1617bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1618bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1619bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 1620cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 162114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16225b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1623852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1624852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16259697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16269697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1627b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1628018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1629852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1630ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1631ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1632852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1633bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1634bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1635852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1636852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1637852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1638852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1639db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1640bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1641bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1642b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1643852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1644852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1645852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1646b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1647bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1648852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1649852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1650bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1651bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1652bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1653bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1654bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1655bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1656bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1657bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1658bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1659bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 16601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1661b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1662bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1663b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16641b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1665b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1666aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 166773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 166873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1669b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16701b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1671b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1672db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 16735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 167496ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1675b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1676b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1677bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1678bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->BindExpr(BoundEx, LCtx, UnknownVal()), 1679fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose tag, ProgramPoint::PostLoadKind); 1680b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1681b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 168296ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1683bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 168496ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1685bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1686bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->bindExprAndLocation(BoundEx, LCtx, location, V), 1687fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose tag, ProgramPoint::PostLoadKind); 1688b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1689d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 16901b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16911b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1692bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1693bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1694bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1695bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1696bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1697bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1698bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1699bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 1700aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 170100b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1702769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1703b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1704b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1705b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17069c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1707ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1708aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1709ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1710eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1711eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1712eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1713eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1714eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1715eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1716eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1717eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1718ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1719fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose static SimpleProgramPointTag tag("ExprEngine: Location"); 1720fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(NodeEx, Pred, state, &tag); 17210296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1722ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1723bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1724bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1725ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1726ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1727ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17286c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17296c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17306c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17316c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17326c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17336c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17346c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17356c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1736d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17376800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1738aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 173986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1740031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1741031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1742b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1743b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1744b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1746b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1747b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1749b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17508bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17515eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17525344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17535344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17546c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17556c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17566c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 175748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17588bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 175986b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17605eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1761fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateTrue, tags.first); 176248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17658bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 176686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1768fa06f0464a04bb7fce1fcfb3780d151bb029e00cJordan Rose Bldr.generateNode(Ex, Pred, StateFalse, tags.second); 176948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 177248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 177348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 17749c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1775a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1776a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1777a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1778a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1780a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1781a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1782a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1784a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 17851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1786a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1787a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1788a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1789a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 17901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1791a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1792a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1793ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 17941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1795a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1796ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1797ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 17988cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 17998cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 18008cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 18018cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 18028cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 18038cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 1804094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1805e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1806ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1807ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1808aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1809d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1810e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18113b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1812aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1813aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 181447491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1815aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1816006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1817006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1818006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1819d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1820ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18219c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 182410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 182510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1826a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18279dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18284a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18294a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18304a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18315e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18322ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18332ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1834a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18368cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18378cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18382055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1839a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1840a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 184228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose static void printLocation(llvm::raw_ostream &Out, SourceLocation SLoc) { 184328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose if (SLoc.isFileID()) { 184428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "\\lline=" 184528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 184628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << " col=" 184728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 184828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose << "\\l"; 184928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 185028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 185128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 18529c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 185453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 185553ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1856803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1857803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1858aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1860aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 18610b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 18621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1863aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 18640b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 18650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 18660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 18670b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 18680b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 18690b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 1870aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18710b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 18721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1873aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1874aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1875aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1877102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1878102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1879102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1880102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 18820b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 18830b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 18840b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 18850b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 18860b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 18870b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 18880b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 18890b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 18900b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 18910b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 18920b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 18930b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 18940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 1895102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1896102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 18985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 18995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 19005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 190128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PreImplicitCallKind: { 190228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 190328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PreCall: "; 190428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 190528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 190628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 190728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 190828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 190928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 191028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 191128038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose case ProgramPoint::PostImplicitCallKind: { 191228038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose ImplicitCallPoint *PC = cast<ImplicitCallPoint>(&Loc); 191328038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose Out << "PostCall: "; 191428038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 191528038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose // FIXME: Get proper printing options. 191628038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose PC->getDecl()->print(Out, LangOptions()); 191728038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, PC->getLocation()); 191828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose break; 191928038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose } 192028038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose 1921aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 19225f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 19239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 19248c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1926e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1927e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 192828038f33aa2db4833881fea757a1f0daf85ac02bJordan Rose printLocation(Out, S->getLocStart()); 19291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19305f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 19325f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 19337090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 19347090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 19357090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 19367090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 19377090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 193910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 194010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 194110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19428c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19438c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19448c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19458c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19468c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19478c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19508c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19518c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19528c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19538c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19548c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 195810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19639c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1964aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1965aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19679c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1969e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1971b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1972e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1973e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19759b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19769b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1977642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19787da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1979a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19809b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1982daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19839c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19869c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1987daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1988e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1989e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19919c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1992daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1993e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1994daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1996daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1997daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1998daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1999daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2000daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2001daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2002daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2004daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2005daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2006daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2007b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2008b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2009b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2010b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2011b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2012b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2013b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 20141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2015b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2017b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2018b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 202110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 202210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 20234a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 20244a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 20253b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 202610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2027aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2028aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 20291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 2031a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 20328673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 20335eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2034ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2035ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2036ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2037ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2038ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2039ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2040ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2041aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2042aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2043aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2045aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2046aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2047ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20487ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20499c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20507ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2051031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2052031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2053031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20547ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20557ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2056ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2057ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2058d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2060ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2061031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2062940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2063940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2064940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2065940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2066940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2067940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2068940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2069404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2070404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 20714a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2072404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2073940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20757ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2076ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2077493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2078493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2079493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2080ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2081d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2083493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2084493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2085493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2086493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2087493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2088493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2089d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2090493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2091493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2092493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2094031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2095493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2096cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 20976cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2098cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2099d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 21001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21013b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2102e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2103e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2104ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2105