ExprEngine.cpp revision 85d7e01cf639b257d70f8a129709a2d7594d7b22
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" 2185d7e01cf639b257d70f8a129709a2d7594d7b22Jordan Rose#include "clang/StaticAnalyzer/Core/PathSensitive/Calls.h" 229b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 23d1e5a89226da79f7e6f43d40facc46abda9e5245Jordy Rose#include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" 24199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2616f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 27337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 28c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 291b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 3016f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 310bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 32a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 336cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 34c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 354323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 380f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 390f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 40b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 419ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 42b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 43ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 44c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 45c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 46749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 47749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 48749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 49749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 50749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 51749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 525903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 55e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 56bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 57bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 58bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 593fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 606a86082f3a06a2dcceaaf63f78a0e52d64bcbaa3Anna Zaks SetOfConstDecls *VisitedCallees, 613bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks FunctionSummariesTy *FS) 6225e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 631d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 64e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine(*this, VisitedCallees, FS), 65d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 66c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 6732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 6832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 6950a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 70c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 718ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 728ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 73a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 74c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 75e62f048960645b79363408fdead53fec2a063c52Anna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 76d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 77d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 78d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 79d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 80d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 81c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 8250a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 83d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 84cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 85e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 8650a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 8750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 88e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 89e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 90e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 91e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 928bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 94a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 9752e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 9852e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 995974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 100a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1015974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1025974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1035974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1045974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1055974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1065974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1085974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1105974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1115974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 112b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 116b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1171397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1189c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 119c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1205974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 124b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1255974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1265974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 127b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 13052e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 131a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 132a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 133a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 134a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 135a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 136a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 137a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 138a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1485974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 15610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek loc::MemRegionVal L = svalBuilder.getCXXThis(MD, SFC); 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 161a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1625974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 163cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 165a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 16652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 167e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 168e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 169e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 170e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 171e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 172e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1739c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 17432a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1758bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 176fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 177fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 17832a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 17932a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1808bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 181183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 182c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 183c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1848bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1858bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 18635bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 187537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 18866c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 189740d490593e0de8732a697c9f77b90ddd463863bJordan Rose const CallEvent *Call) { 19035bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 19166c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 192c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 193c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1948bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 195dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 196dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 197dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 198dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 199e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 20030726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 201ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 202ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 203ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 204ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 205ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 206ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 207ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2089c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 212ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2143c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 215ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2163c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2193c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2203c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 221ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2223c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2239c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2240b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentBuilderContext = 0; 2259c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2269c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 227ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 228ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 229ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 230ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 231ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 232ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 233ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 234ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 235ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 236ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2379e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 238ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 239ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 241ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 242ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 243ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 244ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 24585d7e01cf639b257d70f8a129709a2d7594d7b22Jordan Rose if (CallEvent::mayBeInlined(S.getStmt())) 246ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 247ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 251ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 252ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 253ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 2540b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 2550b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 2560b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const LocationContext *LC, 2570b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 2580b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 2590b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 2600b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ReferenceStmt == 0) && "PreStmt is not generally supported by " 2610b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "the SymbolReaper yet"); 2620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 2630b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = Pred->getState(); 2640b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks SymbolReaper SymReaper(LC, ReferenceStmt, SymMgr, getStoreManager()); 2650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 2670b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2680b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 2690b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 2700b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 2710b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2720b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 273241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 27477d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 275f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 276f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 2776bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2786bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2796bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2806bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 2810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(Pred, Out, *currentBuilderContext); 2820b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, false, &cleanupTag,K); 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2846bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 2856bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2866bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 287fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 2880b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 2890b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 290183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 291fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 292fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 293fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 2940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Out, *currentBuilderContext); 295fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 296fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 2978bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 2986bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 2996bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3006bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3016bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3026bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3046bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3056bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3116bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3128bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 3140b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, false, 3150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks &cleanupTag, K); 3166bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 31777d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3180b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3190b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3200b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3210b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3230b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 3240b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3250b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt = S.getStmt(); 3260b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 3270b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt->getLocStart(), 3280b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3300b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 3310b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks EntryNode = Pred; 3320b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 3330b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (shouldRemoveDeadBindings(AMgr, S, Pred, EntryNode->getLocationContext())){ 3340b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks removeDead(EntryNode, CleanedStates, currentStmt, 3350b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Pred->getLocationContext(), currentStmt); 3360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 3370b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedStates.Add(EntryNode); 3380b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 340dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 3410b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 3420b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 343dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 345dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 346dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 347ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 348ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 349dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 350dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 352e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 353846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 354846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3550a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 356e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 357e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 358d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 359056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 360ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 361ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3620a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 363cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 364056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 365056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 366056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 367056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 36810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek SVal thisVal = Pred->getState()->getSVal(svalBuilder.getCXXThis(decl, 36910f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek stackFrame)); 3709dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 37100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3729dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 3739dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 374e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 375e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen ProgramStateRef state = Pred->getState(); 3769dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 377e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen const FieldDecl *FD = BMI->getAnyMember(); 3789dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 379e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal FieldLoc = state->getLValue(FD, thisVal); 380e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 381e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen state = state->bindLoc(FieldLoc, InitVal); 3829dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 383e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Use a custom node building process. 384e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen PostInitializer PP(BMI, stackFrame); 385e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Builder automatically add the generated node to the deferred set, 386e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // which are processed in the builder's dtor. 387e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Bldr.generateNode(PP, Pred, state); 388056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 389056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 390056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 391056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 392056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 393056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 394056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 395056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 396056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 398056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 399d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 401056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 402dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 403dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 404dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4059c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4069c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 407d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 408ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 409ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4114ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 412056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4134ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4144ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 415056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4164ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4174ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 418056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4194ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4254ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 426ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 427dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 428dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4304ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 431056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 432056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 433056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4348bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 435056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4362210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4372210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4382210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4392210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4402210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4412210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4422210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4432210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4442210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 445b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 446056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 447b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4482210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 449056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4504ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4514ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 452d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 453056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4544ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 455d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 456056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4574ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 458d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 459056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 460056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4619c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4629c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4636889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4640bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4650bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4660bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4676889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4686889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4690bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 470f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 471f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 472892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 473f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 474e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 475e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 476e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 478ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 479e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 481e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 482f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 483f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4851b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4889be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 489c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 4901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 4926ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 4934ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 49421ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 495552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 4961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 497c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 4986b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 499be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 500c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 50128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 50228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 50301d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 504ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 505337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState(), 506337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek /* sink */ true); 507ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 508c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 509c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5105fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5115fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5125fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 51391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 514ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5155fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5165fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 517f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 518f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 519f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 520f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5211b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5221b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5231b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5241b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5251b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5261b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 52746eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5281b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 530d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 532d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5341b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 535534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 538d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 539d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 540ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5438ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5448f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5458bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 548ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5498ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5508ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5518ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5524beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 553ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5544beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 555ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5564beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5574beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 5581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME. 5591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCSubscriptRefExprClass: 5601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 5611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 56214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 563f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 56414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 56514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 566ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 567e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 568f85e193739c953358c865005855253af4f68a497John McCall break; 569f85e193739c953358c865005855253af4f68a497John McCall 5701b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5711b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5721b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5731b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5741b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5751b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5761b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 577f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5781b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5791b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5801b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5811b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5821b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5851b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 586e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 58756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 58861eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 589276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 590337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 592337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Currently all handling of 'throw' just falls to the CFG. We 593337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // can consider doing more if necessary. 594337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXThrowExprClass: 595337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 596337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 599bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 600bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 601bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 602c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 603c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 604477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6051a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 606bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 607f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 608e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 609e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 610cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 611bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 612bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 613bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 614bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 615bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 616bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 617e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 618bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6201a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 62170fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 62270fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 62370fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 62470fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 6251a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6261a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6271a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6281a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6291a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6301a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6311a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6321a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 63370fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 63470fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 63570fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 6361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6451a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6461a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6471a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 652540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 653ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 654892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 655ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 656540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 658e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 659ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 660e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 661ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 662e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 663b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 6648cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 6658cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 6668cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 6678cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 6688cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 6698cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 670c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 671ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 672c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 673ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 674c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 675c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 676e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 67703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 678e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 679ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 680e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 681ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 682e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 683e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6842de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6858bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 686ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6885eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 691e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 69206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 693ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 694ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 695b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 696bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 697031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 698892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 6999c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 70048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 70148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 702892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 70348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 704ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 705e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 706e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 70706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 708b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 709b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7109fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7119fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 712ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 713b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 714ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 71506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 716e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 717337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 718337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 719337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 720337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 721337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 722337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 723337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 72406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 725744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 7267ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7277ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7287ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7297ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 730ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 731892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 732ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7337ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7347ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7357ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 736856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 737ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 73803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 739856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 741856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 742856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 743856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7446b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 745ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7476b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7496b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7506b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 751e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 752e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 754e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7569c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 757e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 758ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 759e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 760e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 762e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 763ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 764892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 765ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 766e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 767f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 768f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 769ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 770892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 771ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 772f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 775e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 776ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 77756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 77856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 77956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 780ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 781e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 782e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 784bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 785ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 786bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 787ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 788bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 789bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 790892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 791ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 792892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 793892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 794ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 795e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 796892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 7971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 798e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 799ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 800e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 801ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 802e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8040835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8050d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8060d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8070d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8080d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8090d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 810f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 811f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 812ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8139c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 814f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 815f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 816f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 817f85e193739c953358c865005855253af4f68a497John McCall 818f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 819f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 820f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 821f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 822f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 823f85e193739c953358c865005855253af4f68a497John McCall } 824f85e193739c953358c865005855253af4f68a497John McCall 825f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 826f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 827ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 828e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 829e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 830b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 83103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 832ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 83303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 83403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 835e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 836e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 83703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 838e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 839ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 84003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 84103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 84203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 843c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 844ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 845c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 846ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 847c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84997ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 850ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 851892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 852ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 853469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 854ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 85597ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 856ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 857892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 858ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 85997ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 860af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 861af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 862ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 863af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 864ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 865af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 867b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 868ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 869b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 870b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 871b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 872b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 873b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 874b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 875b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 876b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 877b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 878b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 879b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 880b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 881b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 882b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 883b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 884b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 885b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 886b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 887b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 888b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 889b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 890b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 891ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 892e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 893b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 8941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 895bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 896bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 897bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 898ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 899bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 900bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 9011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9021b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 903ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9041b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 905ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9061b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9088ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 909ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9108ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 911ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9128ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9138ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 914f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 915ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 916f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 917f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 918ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 919e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 921e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 923a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 924a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 925a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 926a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 927a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 928a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 929a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9319c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9328bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 933ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9345eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9355eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 937a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 938e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 939e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9406987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 94172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 942ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 94303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 944ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 945031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 946892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9479c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 94872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 94972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 950892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 951ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9521b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 95372374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9544b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9554b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9564b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9578bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9584b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9594b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9605eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9615eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9625eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9634b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9644b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9655eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9665eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9675eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9684b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9694b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9704b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9714b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9721b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9731b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9741b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9755903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9765903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9775903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9785903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9795903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9805903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 9815903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9825903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9835903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // processing the CallExpr. 9930b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (SP->getStmt() == CalleeSF->getCallSite()) 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1001253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const Stmt *CE = CalleeSF->getCallSite(); 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1018253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1019253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1020253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1021253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1022253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10275903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10285903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10295903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10305903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1032c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1033253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1034253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NodeBuilderWithSinks &nodeBuilder) { 103527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 103627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1037c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 103827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1039c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1040ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1041253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1042253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 1043749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1044749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1045749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10465903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10473bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10485903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10495903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10503bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1051e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10523bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 10535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10555903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1057b47dbcbc12430fdf3e5a5b9f59cdec5480e89e75Anna Zaks if ((!AMgr.NoRetryExhausted && replayWithoutInlining(pred, CalleeLC))) 1058253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1059253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10605903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1061749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1062253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1063253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1064253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 106527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1066e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1067e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1068e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1069e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1070e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1071e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10728bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 10735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 10745eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 10755eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 10761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 107805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 1079a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 10801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 10821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 108405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10862de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 10871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 108905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 109005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 109105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 109205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 10931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10949c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 10952de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 109603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 10971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 109905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 110205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 110356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 110456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 11051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 110705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 11081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11099c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 11101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 111256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 111305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 111456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11165eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 111705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 11201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11219c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 11221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 11245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 112605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 112705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 112805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 11296ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11306ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11316ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11326ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11336ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1134294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11358bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1136294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1138294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 114003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11446ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11456ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 114703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11486ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11506ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11516ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11719c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1172a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1173ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11741aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1175a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1176a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1177f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1178f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1179b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11811aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1182a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11834e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1184b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1185b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 118821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 118921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 11900fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1191f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1192f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 11934e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 11948ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1195f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 11968ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1198f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1199f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1200f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1201cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1202cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1203cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1204cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1205cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12068bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12075eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1208cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1209cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1210cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1211cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1212cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1214cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1215cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1217cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12195eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1220cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1221cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12250835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1226b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12270835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12285eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 12305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12310835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 123273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 12335eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 12345eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 12355eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 12365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1237cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1240cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12410835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1242cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1243cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12448bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 12455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 12465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1247cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1248cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1249cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1251cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1252cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12538bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 12545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 12555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1256cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1257cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1258cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1260f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1261f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1262f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1263e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1264754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1265ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1266754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12678bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1270754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1271754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1272754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12734a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1275754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1277d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1278754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12791c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1280ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1282ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 128324f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1284a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1285754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1286754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1287754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1289b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1290754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1291754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12921c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1293754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 12942055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 12952055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 12962055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1297754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1298754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1300754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1301b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1303754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1304a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1305754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1306f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1307d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 130873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1309af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1310af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1311af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1312af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 13134d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 131473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 131573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1316d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1317daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1318e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1319d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13219c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13225eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1323daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13245b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13252055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1326b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13272055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13282055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1329daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1330daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13315b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1332692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13338bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 133434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 133534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 133634feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 133834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1339e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1340e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1341e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1342e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13439c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 134472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 134572afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 134685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 134785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1349daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 135085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 135185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 135285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 135314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 135414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1356daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1357daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1358aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 136185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13629c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 136348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1364b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13668bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1367a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1369daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1370daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1371daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1373daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1374daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1376daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1377daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 137848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13798bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 138048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 138148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 138248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 138348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 138448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 138548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 138648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13875014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1388b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 138914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 139085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 139114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 13921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 139485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 139614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1397daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13994d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14004d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14014d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14024d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14034d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14044d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14054d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14064d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14164d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1417daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1418daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1419e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1420ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1421e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1422d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1423d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1424d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1425d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1426aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1427ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14306d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14319c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1432591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1433d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1434a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1435892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1436892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1437892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1438892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1439892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1440892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1441892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1442852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14436d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1445ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1446852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1447892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14489c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1449591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1450c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14515eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14526d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1453892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14549c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1455c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 14565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1457ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14586d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14591b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14605aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 14615aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek // FIXME: Compute lvalue of fields. 14625aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 14635aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek false, 0, ProgramPoint::PostLValueKind); 14645aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14655aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14665aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 14676d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 14686d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 14693271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14703271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1471540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14729c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14739c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14749c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14779c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1478892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14808f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14818f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14828f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1483aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1484ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14858f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14868f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14888bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14895eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 14905eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 14915eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1492591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 14935eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1494ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 14951b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1496540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1497540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1498469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 14999c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15006889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15026889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 15036889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 15045bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 150510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 15065bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 1507591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(M->isGLValue()); 1508ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 15095bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1510ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15115bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15125bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 151310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 151410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 151510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(member)) { 151610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.takeNodes(Pred); 151710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek SVal MDVal = svalBuilder.getFunctionPointer(MD); 151810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek ProgramStateRef state = 151910f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Pred->getState()->BindExpr(M, Pred->getLocationContext(), MDVal); 152010f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.generateNode(M, Pred, state); 152110f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek return; 152210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek } 152310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 152410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 15255bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1526892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 152786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 152886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1529e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15315eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1533e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1534e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1535e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1536e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1537e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1538e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1540e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1541e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1542892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1543e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1544e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1545e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1546d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1547e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1548e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1549719b429e3ed660cfd9cce88397b29c695a25fa50Anna Zaks if (M->isGLValue()) 15505eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1552ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1553ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1554bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1555ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1556ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1557469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1558469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15599c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15609c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15619c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 156293bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15633d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1564b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1565b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1566fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1567fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15683d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15693d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1570b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15716b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1572aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15736b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15743d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1575b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1576b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15773d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15783d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1579a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1580b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1581b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1582b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1583f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1584fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1585fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1586fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1587f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15893d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15903d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15913d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 15923d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 15933d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 15943d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks Bldr.generateNode(L, PredI, state, false); 1595b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1596ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15976b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1598a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1599a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 16009c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1601a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 16022e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1603e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 16042e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1605a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1606a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1607a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 16089c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 16099c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 16109c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16118bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1612ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 161314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 161414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 161514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 161614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 161714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1618b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 161914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 162014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16211b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1622b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1623bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 16241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1625b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16261b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1627b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 162873c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 162973c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1630a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1631b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16323d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16331b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16341b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1635bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1636bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1637bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1638bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1639bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1640bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1641bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1642bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1643bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 1644cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 1645bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(!isa<loc::ObjCPropRef>(location)); 164614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16475b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1648852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1649852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16509697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16519697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1652b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1653018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1654852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1655ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1656ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1657852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1658bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1659bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1660852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1661852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1662852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1663852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1664db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1665bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1666bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1667b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1668852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1669852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1670852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1671b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1672bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1673852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1674852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1675bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1676bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1677bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1678bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1679bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1680bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1681bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1682bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1683bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1684bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 16851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1686b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1687bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1688b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16891b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1690b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1691aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 169273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 169373c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1694b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16951b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1696b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1697db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 16985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 169996ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1700b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1701b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1702bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1703bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->BindExpr(BoundEx, LCtx, UnknownVal()), 1704bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek false, tag, 1705bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramPoint::PostLoadKind); 1706b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1707b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 170896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1709bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 171096ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1711bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1712bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->bindExprAndLocation(BoundEx, LCtx, location, V), 1713ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1714b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1715d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 17161b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 17171b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1718bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1719bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1720bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1721bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1722bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1723bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1724bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1725bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 1726aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 172700b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1728769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1729b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1730b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1731b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17329c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1733ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1734aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1735ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1736eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1737eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1738eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1739eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1740eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1741eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1742eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1743eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1744ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1745ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1746ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1747bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, Pred, state, false, &etag); 17480296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1749ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1750bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1751bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1752ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1753ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1754ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17556c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17566c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17576c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17586c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17596c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17606c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17616c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17626c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1763d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17646800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1765aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 176686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1767031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1768031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1769b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1770b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1771b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1773b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1774b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1776b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17778bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17795344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17805344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17816c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17826c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17836c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 178448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17858bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 178686b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17875eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1788ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 178948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17928bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 179386b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17945eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1795ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 179648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 180048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 18019c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1802a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1803a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1804a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1805a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 18061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1807a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1808a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1809a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 18101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1811a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 18121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1813a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1814a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1815a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1816a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1818a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1819a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1820ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1822a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1823ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1824ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 18258cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 18268cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 18278cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 18288cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 18298cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 18308cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 1831094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1832e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1833ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1834ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1835aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1836d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1837e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18383b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1839aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1840aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 184147491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1842aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1843006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1844006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1845006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1846d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1847ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18489c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 185010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 185110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 185210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1853a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18549dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18554a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18564a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18574a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18585e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18592ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18602ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1861a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18638cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18648cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18652055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1866a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1867a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18699c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187153ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 187253ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1873803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1874803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1875aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1877aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 18780b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 18791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1880aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 18810b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 18820b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 18830b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 18840b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 18850b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 18860b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 1887aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18880b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 18891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1890aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1891aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1892aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1894102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1895102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1896102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1897102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18980b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 18990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 19000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 19030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 19040b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19050b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 19070b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 19080b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19090b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19100b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 19110b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 1912102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1913102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 19155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 19165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 19175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1918aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 19195f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 19209c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 19218c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 19228c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1924e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1925e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 19261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 19288c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1929642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19307da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1931a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 19327da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 19338c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19355f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 19361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 19375f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 19387090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 19397090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 19407090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 19417090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 19427090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 19431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 194410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 194510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 194610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19478c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19508c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19518c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19528c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19538c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19548c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 196310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19658c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19668c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19678c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19689c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1969aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1970aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19729c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1974e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1976b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1977e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1978e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19809b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19819b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1982642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19837da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1984a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19859b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1987daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19889c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19919c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1992daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1993e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1994e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19969c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1997daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1998e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1999daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2001daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2002daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2003daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2004daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2005daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2006daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2007daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2009daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2010daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2011daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2012b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2013b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2014b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2015b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2016b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2017b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2018b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 20191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2020b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2022b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2023b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 202610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 202710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 20284a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 20294a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 20303b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 203110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2032aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2033aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 20341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20358bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 2036a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 20378673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 20385eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2039ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2040ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2041ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2042ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2043ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2044ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2045ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2046aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2047aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2048aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2050aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2051aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2052ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20537ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20549c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20557ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2056031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2057031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2058031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20597ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20607ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2061ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2062ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2063d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2065ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2066031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2067940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2068940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2069940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2070940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2071940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2072940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2073940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2074404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2075404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 20764a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2077404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2078940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20807ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2081ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2082493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2083493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2084493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2085ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2086d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2088493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2089493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2090493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2091493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2092493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2093493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2094d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2095493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2096493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2097493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2099031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2100493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2101cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 21026cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2103cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2104d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 21051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21063b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2107e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2108e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2109ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2110