ExprEngine.cpp revision 10f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2
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" 219b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 22d1e5a89226da79f7e6f43d40facc46abda9e5245Jordy Rose#include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" 23199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 2416f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/ParentMap.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 26337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek#include "clang/AST/StmtCXX.h" 27c506357c3778092c2a3251243f12524e8eb89274Zhongxing Xu#include "clang/AST/DeclCXX.h" 281b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 2916f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 300bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek#include "clang/Basic/PrettyStackTrace.h" 31a95d3750441ac8ad03e36af8e6e74039c9a3109dTed Kremenek#include "llvm/Support/raw_ostream.h" 326cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer#include "llvm/ADT/ImmutableList.h" 33c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks#include "llvm/ADT/Statistic.h" 344323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek 350f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#ifndef NDEBUG 360f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#include "llvm/Support/GraphWriter.h" 370f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek#endif 380f5f0595d6a038843a7051c5a65fca7bce2915a0Ted Kremenek 39b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing namespace clang; 409ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 41b387a3f23e423d62c053be86294b703da1d1a222Ted Kremenekusing llvm::APSInt; 42ab2b8c54bca82866876f91e756788916d3fa20c3Ted Kremenek 43c2994283aa7538b7420c8e398cde7afa328d7042Anna ZaksSTATISTIC(NumRemoveDeadBindings, 44c2994283aa7538b7420c8e398cde7afa328d7042Anna Zaks "The # of times RemoveDeadBindings is called"); 45749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReached, 46749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 47749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "a top level function"); 48749bbe6f5f23676244f12a0d41511c8e73516febAnna ZaksSTATISTIC(NumMaxBlockCountReachedInInlined, 49749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "The # of aborted paths due to reaching the maximum block count in " 50749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks "an inlined function"); 515903a373db3d27794c90b25687e0dd6adb0e497dAnna ZaksSTATISTIC(NumTimesRetriedWithoutInlining, 525903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks "The # of times we re-evaluated a call without inlining"); 535903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 54e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 5532c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek// Utility functions. 5632c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 5732c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 589c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline Selector GetNullarySelector(const char* name, ASTContext &Ctx) { 5932c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek IdentifierInfo* II = &Ctx.Idents.get(name); 6032c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek return Ctx.Selectors.getSelector(0, &II); 6132c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek} 6232c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek 6332c4995826c76f282fc05fbbc3241d2dded4fb57Ted Kremenek//===----------------------------------------------------------------------===// 64bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek// Engine construction and deletion. 65bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek//===----------------------------------------------------------------------===// 66bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 673fd5f370a28552976c52e76c3035d79012d78ddaAnna ZaksExprEngine::ExprEngine(AnalysisManager &mgr, bool gcEnabled, 686a86082f3a06a2dcceaaf63f78a0e52d64bcbaa3Anna Zaks SetOfConstDecls *VisitedCallees, 693bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks FunctionSummariesTy *FS) 7025e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu : AMgr(mgr), 711d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContexts(mgr.getAnalysisDeclContextManager()), 72e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine(*this, VisitedCallees, FS), 73d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis G(Engine.getGraph()), 74c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu StateMgr(getContext(), mgr.getStoreManagerCreator(), 7532a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek mgr.getConstraintManagerCreator(), G.getAllocator(), 7632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek *this), 7750a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek SymMgr(StateMgr.getSymbolManager()), 78c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder(StateMgr.getSValBuilder()), 798ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks EntryNode(NULL), 808ad8c546372fe602708cb7ceeaf0ebbb866735c6Anna Zaks currentStmt(NULL), currentStmtIdx(0), currentBuilderContext(0), 81a5a4166f8cb04490b7b27355874edfb98837cd45Zhongxing Xu NSExceptionII(NULL), NSExceptionInstanceRaiseSelectors(NULL), 82c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu RaiseSel(GetNullarySelector("raise", getContext())), 83e62f048960645b79363408fdead53fec2a063c52Anna Zaks ObjCGCEnabled(gcEnabled), BR(mgr, *this) { 84d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 85d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek if (mgr.shouldEagerlyTrimExplodedGraph()) { 86d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek // Enable eager node reclaimation when constructing the ExplodedGraph. 87d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek G.enableNodeReclamation(); 88d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek } 89c80135ba857da48173578b9c528fce6777e18168Ted Kremenek} 9050a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 91d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios KyrtzidisExprEngine::~ExprEngine() { 92cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BR.FlushReports(); 93e448ab4f9dd162802f5d7cfea60f7830cc61c654Ted Kremenek delete [] NSExceptionInstanceRaiseSelectors; 9450a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek} 9550a6d0ce344c02782e0207574005c3b2aaa5077cTed Kremenek 96e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 97e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Utility methods. 98e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 99e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1008bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::getInitialState(const LocationContext *InitLoc) { 1018bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = StateMgr.getInitialState(InitLoc); 102a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const Decl *D = InitLoc->getDecl(); 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek // Preconditions. 10552e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // FIXME: It would be nice if we had a more general mechanism to add 10652e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek // such preconditions. Some day. 1075974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek do { 108a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 1095974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1105974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // Precondition: the first argument of 'main' is an integer guaranteed 1115974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek // to be > 0. 1125974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const IdentifierInfo *II = FD->getIdentifier(); 1135974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!II || !(II->getName() == "main" && FD->getNumParams() > 0)) 1145974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 1155974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1165974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const ParmVarDecl *PD = FD->getParamDecl(0); 1175974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek QualType T = PD->getType(); 1185974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!T->isIntegerType()) 1195974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 120b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1215974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek const MemRegion *R = state->getRegion(PD, InitLoc); 1225974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!R) 1235974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 124b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1251397663af9dbcc24dbf0e11de43931b3dc08fdbbTed Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 1269c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal Constraint_untested = evalBinOp(state, BO_GT, V, 127c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek svalBuilder.makeZeroVal(T), 1285974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek getContext().IntTy); 1295974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 1305974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek DefinedOrUnknownSVal *Constraint = 1315974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek dyn_cast<DefinedOrUnknownSVal>(&Constraint_untested); 132b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1335974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek if (!Constraint) 1345974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek break; 135b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef newState = state->assume(*Constraint, true)) 1375974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek state = newState; 13852e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek } 139a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek break; 140a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 141a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek while (0); 142a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 143a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 144a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'self' is always non-null upon entry to an Objective-C 145a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // method. 146a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const ImplicitParamDecl *SelfD = MD->getSelfDecl(); 147a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const MemRegion *R = state->getRegion(SelfD, InitLoc); 148a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(loc::MemRegionVal(R)); 149a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 150a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 151a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Assume that the pointer value in 'self' is non-null. 152a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 153a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'self' cannot be null"); 154a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 155a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1565974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek 157a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 158a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (!MD->isStatic()) { 159a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // Precondition: 'this' is always non-null upon entry to the 160a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // top-level function. This is our starting assumption for 161a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek // analyzing an "open" program. 162a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek const StackFrameContext *SFC = InitLoc->getCurrentStackFrame(); 163a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (SFC->getParent() == 0) { 16410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek loc::MemRegionVal L = svalBuilder.getCXXThis(MD, SFC); 165a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek SVal V = state->getSVal(L); 166a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek if (const Loc *LV = dyn_cast<Loc>(&V)) { 167a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek state = state->assume(*LV, true); 168a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek assert(state && "'this' cannot be null"); 169a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 1705974ec518289a719fdd18122060bbcfe49d439e3Ted Kremenek } 171cfcd7fd0de701c5ce05e96de1ed2d0bf8c7035d9Ted Kremenek } 172a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek } 173a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek 17452e5602056e4cade24cbcca57767e94e1d430b03Ted Kremenek return state; 175e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek} 176e070a1df66aab6d4168fb28f7559fdf996df3567Ted Kremenek 177e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 178e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Top-level transfer function logic (Dispatcher). 179e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 180e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1819c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalAssume - Called by ConstraintManager. Used to call checker-specific 18232a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek/// logic for handling assumptions on symbolic values. 1838bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::processAssume(ProgramStateRef state, 184fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose SVal cond, bool assumption) { 185fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose return getCheckerManager().runCheckersForEvalAssume(state, cond, assumption); 18632a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek} 18732a58084a4c53e6938dd81bfce224db25a5976d1Ted Kremenek 1888bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekbool ExprEngine::wantsRegionChangeUpdate(ProgramStateRef state) { 189183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis return getCheckerManager().wantsRegionChangeUpdate(state); 190c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 191c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 1928bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef 1938bef8238181a30e52dea380789a7e2d760eac532Ted KremenekExprEngine::processRegionChanges(ProgramStateRef state, 19435bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek const StoreManager::InvalidatedSymbols *invalidated, 195537716ad8dd10f984b6cfe6985afade1185c5e3cJordy Rose ArrayRef<const MemRegion *> Explicits, 19666c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks ArrayRef<const MemRegion *> Regions, 19766c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks const CallOrObjCMessage *Call) { 19835bdbf40624beba3fc00cb72ab444659939c1a6bTed Kremenek return getCheckerManager().runCheckersForRegionChanges(state, invalidated, 19966c40400e7d6272b0cd675ada18dd62c1f0362c7Anna Zaks Explicits, Regions, Call); 200c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose} 201c2b7dfaad674587cfd220ff447b3710d252130c3Jordy Rose 2028bef8238181a30e52dea380789a7e2d760eac532Ted Kremenekvoid ExprEngine::printState(raw_ostream &Out, ProgramStateRef State, 203dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose const char *NL, const char *Sep) { 204dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose getCheckerManager().runCheckersForPrintState(Out, State, NL, Sep); 205dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose} 206dbd658e139b3e0bf084f75feaea8d844af9e319fJordy Rose 207e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processEndWorklist(bool hasWorkRemaining) { 20830726c6baee1417307236e854f1474fdb3cedb98Argyrios Kyrtzidis getCheckerManager().runCheckersForEndAnalysis(G, BR, *this); 209ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek} 210ccc263b44c62ce3a02f797a3ddb3d6017cf0e5e4Ted Kremenek 211ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaksvoid ExprEngine::processCFGElement(const CFGElement E, ExplodedNode *Pred, 212ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks unsigned StmtIdx, NodeBuilderContext *Ctx) { 213ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentStmtIdx = StmtIdx; 214ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks currentBuilderContext = Ctx; 215ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 2169c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu switch (E.getKind()) { 2173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Invalid: 2183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek llvm_unreachable("Unexpected CFGElement kind."); 2193c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Statement: 220ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessStmt(const_cast<Stmt*>(E.getAs<CFGStmt>()->getStmt()), Pred); 2213c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2223c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::Initializer: 223ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessInitializer(E.getAs<CFGInitializer>()->getInitializer(), Pred); 2243c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2253c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::AutomaticObjectDtor: 2263c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::BaseDtor: 2273c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::MemberDtor: 2283c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek case CFGElement::TemporaryDtor: 229ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProcessImplicitDtor(*E.getAs<CFGImplicitDtor>(), Pred); 2303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return; 2319c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu } 2320b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentBuilderContext = 0; 2339c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 2349c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 235ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenekstatic bool shouldRemoveDeadBindings(AnalysisManager &AMgr, 236ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const CFGStmt S, 237ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const ExplodedNode *Pred, 238ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek const LocationContext *LC) { 239ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 240ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Are we never purging state values? 241ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (AMgr.getPurgeMode() == PurgeNone) 242ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return false; 243ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 244ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this the beginning of a basic block? 2459e9a3e612d57b583800d5f0e48bb28d4afbd8b84Ted Kremenek if (isa<BlockEntrance>(Pred->getLocation())) 246ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 247ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 248ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this on a non-expression? 249ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek if (!isa<Expr>(S.getStmt())) 250ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return true; 251ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 252ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks // Run before processing a call. 253c0e71a15bce9bb8c0d4ec1c42fab70c03140f9e0Anna Zaks if (CallOrObjCMessage::canBeInlined(S.getStmt())) 254ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks return true; 255ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks 256ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // Is this an expression that is consumed by another expression? If so, 257ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek // postpone cleaning out the state. 258ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek ParentMap &PM = LC->getAnalysisDeclContext()->getParentMap(); 259ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek return !PM.isConsumedExpr(cast<Expr>(S.getStmt())); 260ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek} 261ce117a7d289f57f792e5cc3294280cfe070433deTed Kremenek 2620b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::removeDead(ExplodedNode *Pred, ExplodedNodeSet &Out, 2630b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *ReferenceStmt, 2640b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const LocationContext *LC, 2650b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const Stmt *DiagnosticStmt, 2660b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ProgramPoint::Kind K) { 2670b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert((K == ProgramPoint::PreStmtPurgeDeadSymbolsKind || 2680b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ReferenceStmt == 0) && "PreStmt is not generally supported by " 2690b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "the SymbolReaper yet"); 2700b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks NumRemoveDeadBindings++; 2710b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = Pred->getState(); 2720b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks SymbolReaper SymReaper(LC, ReferenceStmt, SymMgr, getStoreManager()); 2730b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2740b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForLiveSymbols(CleanedState, SymReaper); 2750b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 2760b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Create a state in which dead bindings are removed from the environment 2770b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // and the store. TODO: The function should just return new env and store, 2780b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // not a new state. 2790b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks const StackFrameContext *SFC = LC->getCurrentStackFrame(); 2800b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedState = StateMgr.removeDeadBindings(CleanedState, SFC, SymReaper); 281241677a13cc46647a8f5098b3e3239bd9480dca2Ted Kremenek 28277d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek // Process any special transfer function for dead symbols. 283f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks // A tag to track convenience transitions, which can be removed at cleanup. 284f185cc1ac77a84139c603eee3473b88dcb839c68Anna Zaks static SimpleProgramPointTag cleanupTag("ExprEngine : Clean Node"); 2856bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks if (!SymReaper.hasDeadSymbols()) { 2866bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Generate a CleanedNode that has the environment and store cleaned 2876bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // up. Since no symbols are dead, we can optimize and not clean out 2886bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // the constraint manager. 2890b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(Pred, Out, *currentBuilderContext); 2900b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Bldr.generateNode(DiagnosticStmt, Pred, CleanedState, false, &cleanupTag,K); 2911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2926bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } else { 2936bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Call checkers with the non-cleaned state so that they could query the 2946bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // values of the soon to be dead symbols. 295fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 2960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks getCheckerManager().runCheckersForDeadSymbols(CheckedSet, Pred, SymReaper, 2970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks DiagnosticStmt, *this, K); 298183ff98f425d470c2a0276880aaf43496c9dad14Argyrios Kyrtzidis 299fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // For each node in CheckedSet, generate CleanedNodes that have the 300fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // environment, the store, and the constraints cleaned up but have the 301fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose // user-supplied states as the predecessors. 3020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks StmtNodeBuilder Bldr(CheckedSet, Out, *currentBuilderContext); 303fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose for (ExplodedNodeSet::const_iterator 304fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose I = CheckedSet.begin(), E = CheckedSet.end(); I != E; ++I) { 3058bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CheckerState = (*I)->getState(); 3066bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3076bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // The constraint manager has not been cleaned up yet, so clean up now. 3086bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks CheckerState = getConstraintManager().removeDeadBindings(CheckerState, 3096bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks SymReaper); 3106bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3110b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualEnvironments(CheckerState, Pred->getState()) && 3126bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Environment as a part of " 3136bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3140b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks assert(StateMgr.haveEqualStores(CheckerState, Pred->getState()) && 3156bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "Checkers are not allowed to modify the Store as a part of " 3166bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks "checkDeadSymbols processing."); 3176bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks 3186bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // Create a state based on CleanedState with CheckerState GDM and 3196bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks // generate a transition to that state. 3208bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef CleanedCheckerSt = 3216bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks StateMgr.getPersistentStateWithGDM(CleanedState, CheckerState); 3220b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Bldr.generateNode(DiagnosticStmt, *I, CleanedCheckerSt, false, 3230b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks &cleanupTag, K); 3246bd528b9d703fdea51053719d9c53504a61a6bd7Anna Zaks } 32577d7ef8d8a80ccb2ab3d25c80810571e3ab14ee4Ted Kremenek } 3260b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks} 3270b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3280b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaksvoid ExprEngine::ProcessStmt(const CFGStmt S, 3290b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNode *Pred) { 3300b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Reclaim any unnecessary nodes in the ExplodedGraph. 3310b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks G.reclaimRecentlyAllocatedNodes(); 3320b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3330b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt = S.getStmt(); 3340b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 3350b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks currentStmt->getLocStart(), 3360b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks "Error evaluating statement"); 3371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3380b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Remove dead bindings and symbols. 3390b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks EntryNode = Pred; 3400b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ExplodedNodeSet CleanedStates; 3410b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (shouldRemoveDeadBindings(AMgr, S, Pred, EntryNode->getLocationContext())){ 3420b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks removeDead(EntryNode, CleanedStates, currentStmt, 3430b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Pred->getLocationContext(), currentStmt); 3440b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } else 3450b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks CleanedStates.Add(EntryNode); 3460b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 3470b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks // Visit the statement. 348dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet Dst; 3490b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks for (ExplodedNodeSet::iterator I = CleanedStates.begin(), 3500b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks E = CleanedStates.end(); I != E; ++I) { 351dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks ExplodedNodeSet DstI; 3521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Visit the statement. 353dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Visit(currentStmt, *I, DstI); 354dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Dst.insert(DstI); 355ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 356ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 357dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 358dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 3591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 360e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // NULL out these variables to cleanup. 361846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek CleanedState = NULL; 362846d4e923bf11bcdc2816758aafa331795f29230Ted Kremenek EntryNode = NULL; 3630a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek currentStmt = 0; 364e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 365e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 366d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessInitializer(const CFGInitializer Init, 367056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred) { 368ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 369ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 3700a3ed3143b00f237decb1288c1ff574ae09eba4eTed Kremenek // We don't set EntryNode and currentStmt. And we don't clean up state. 371cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt const CXXCtorInitializer *BMI = Init.getInitializer(); 372056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const StackFrameContext *stackFrame = 373056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<StackFrameContext>(Pred->getLocationContext()); 374056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructorDecl *decl = 375056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks cast<CXXConstructorDecl>(stackFrame->getDecl()); 37610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek SVal thisVal = Pred->getState()->getSVal(svalBuilder.getCXXThis(decl, 37710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek stackFrame)); 3789dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 37900eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3809dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 3819dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 382e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 383e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen ProgramStateRef state = Pred->getState(); 3849dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 385e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen const FieldDecl *FD = BMI->getAnyMember(); 3869dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 387e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal FieldLoc = state->getLValue(FD, thisVal); 388e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 389e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen state = state->bindLoc(FieldLoc, InitVal); 3909dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 391e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Use a custom node building process. 392e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen PostInitializer PP(BMI, stackFrame); 393e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Builder automatically add the generated node to the deferred set, 394e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // which are processed in the builder's dtor. 395e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Bldr.generateNode(PP, Pred, state); 396056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 398056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 399056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 401056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 402056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 404056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 405056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 406056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 407d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 408056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 409056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 410dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 411dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 412dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4139c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4149c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 415d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 416ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 417ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4183c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4194ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 420056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4214ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 423056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4244ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4254ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 426056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4274ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 429056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4304ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4314ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4334ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 434ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 435dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 436dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4374ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4384ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 439056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 440056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 441056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4428bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 443056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4442210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4452210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4462210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4472210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4482210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4492210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4502210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4512210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4522210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 453b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 454056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 455b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4562210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 457056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4584ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4594ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 460d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 461056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4624ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 463d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 464056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4654ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 466d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 467056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 468056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4699c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4709c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4716889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4720bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4730bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4740bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4756889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4766889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4770bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 478f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 479f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 480892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 481f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 482e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 483e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 484e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 486ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 487e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 489e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 490f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 491f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4969be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 497c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 4981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 4991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5006ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5014ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 50221ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 503552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 505c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5066b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 507be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 508c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 50928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 51028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 51101d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 512ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 513337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState(), 514337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek /* sink */ true); 515ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 516c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 517c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5185fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5195fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5205fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 52191a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 522ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5235fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5245fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 525f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 526f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 527f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 528f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5291b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5301b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5341b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 53546eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5371b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 538d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 540d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5421b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 543534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5451b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 546d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 547d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 548ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5491b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5501b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5518ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5528f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5538bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 556ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5578ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5588ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5598ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5604beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 561ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5624beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 563ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5644beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5654beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 5661a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME. 5671a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCSubscriptRefExprClass: 5681a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 5691a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 57014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 571f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 57214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 57314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 574ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 575e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 576f85e193739c953358c865005855253af4f68a497John McCall break; 577f85e193739c953358c865005855253af4f68a497John McCall 5781b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5791b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5801b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5811b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5821b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5831b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5841b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 585f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5861b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5871b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5881b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 5891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 5931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 594e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 59556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 59661eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 597276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 598337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 600337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Currently all handling of 'throw' just falls to the CFG. We 601337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // can consider doing more if necessary. 602337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXThrowExprClass: 603337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 604337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 6051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 607bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 608bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 609bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 610c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::ImplicitValueInitExprClass: 611c319c585c0d5899cba0dca2272e6e4909c8b9f16Ted Kremenek case Stmt::CXXScalarValueInitExprClass: 612477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6131a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 614bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 615f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 616e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 617e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 618cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 619bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 620bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 621bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 622bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 623bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 624bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 625e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 626bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6281a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 62970fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCDictionaryLiteralClass: 63070fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // FIXME: explicitly model with a region and the actual contents 63170fdbc366da85880aae5baebd3351e993ca05603Jordy Rose // of the container. For now, conjure a symbol. 63270fdbc366da85880aae5baebd3351e993ca05603Jordy Rose case Expr::ObjCBoxedExprClass: { 6331a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6341a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6351a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6361a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6371a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 64170fdbc366da85880aae5baebd3351e993ca05603Jordy Rose const Expr *Ex = cast<Expr>(S); 64270fdbc366da85880aae5baebd3351e993ca05603Jordy Rose QualType resultType = Ex->getType(); 64370fdbc366da85880aae5baebd3351e993ca05603Jordy Rose 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6451a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6461a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6471a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6521a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6541a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6551a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6561a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6571a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 660540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 661ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 662892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 663ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 664540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 666e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 667ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 668e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 669ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 670e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 671b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 6728cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier case Stmt::MSAsmStmtClass: 6738cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.takeNodes(Pred); 6748cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier VisitMSAsmStmt(cast<MSAsmStmt>(S), Pred, Dst); 6758cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.addNodes(Dst); 6768cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier break; 6778cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 678c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 679ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 680c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 681ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 682c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 683c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 684e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 68503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 686e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 687ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 688e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 689ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 691e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6922de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 694ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6955eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 698e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 699e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 70006fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 701ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 702ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 703b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 704bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 705031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 706892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7079c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 70848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 70948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 710892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 71148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 712ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 713e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 714e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 71506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 716b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 717b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7189fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7199fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 720ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 721b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 722ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 72306fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 724e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 725337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 726337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 727337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 728337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 729337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 730337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 731337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 73206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 733744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 7347ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7357ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7367ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7377ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 738ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 739892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7417ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7427ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7437ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 744856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 745ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 747856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 748ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 749856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 750856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 751856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7526b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 753ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7556b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 756ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7576b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7586b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 759e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 760e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 762e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 763ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7649c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 765e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 766ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 767e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 768e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 770e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 771ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 772892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 774e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 775f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 776f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 777ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 778892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 780f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 783e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 784ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 78656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 78756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 788ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 789e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 790e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 792bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 793ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 794bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 795ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 796bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 797bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 798892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 799ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 800892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 801892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 802ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 803e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 804892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 806e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 807ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 808e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 809ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 810e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8120835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8130d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8140d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8150d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8160d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8170d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 818f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 819f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 820ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8219c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 822f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 823f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 824f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 825f85e193739c953358c865005855253af4f68a497John McCall 826f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 827f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 828f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 829f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 830f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 831f85e193739c953358c865005855253af4f68a497John McCall } 832f85e193739c953358c865005855253af4f68a497John McCall 833f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 834f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 835ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 836e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 837e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 838b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 83903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 840ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 84203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 843e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 844e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 84503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 846e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 847ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 84803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 84903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 85003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 851c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 852ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 853c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 854ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 855c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85797ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 858ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 859892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 860ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 861469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 862ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 86397ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 864ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 865892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 866ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 86797ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 868af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 869af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 870ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 871af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 872ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 873af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 875b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 876ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 877b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 878b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 879b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 880b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 881b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 882b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 883b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 884b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 885b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 886b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 887b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 888b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 889b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 890b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 891b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 892b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 893b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 894b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 895b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 896b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 897b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 898b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 899ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 900e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 901b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 9021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 903bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 904bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 905bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 906ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 907bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 908bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 9091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9101b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 911ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9121b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 913ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9141b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9168ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 917ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9188ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 919ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9218ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 922f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 923ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 924f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 925f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 926ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 927e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 929e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9309c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 931a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 932a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 933a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 934a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 935a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 936a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 937a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9399c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9408bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 941ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9425eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9435eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 945a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 946e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 947e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9486987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 94972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 950ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 95103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 952ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 953031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 954892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9559c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 95672374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 95772374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 958892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 959ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9601b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 96172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9624b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9634b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9644b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9658bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9664b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9674b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9685eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9695eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9705eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9714b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9724b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9735eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9745eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9755eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9764b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9774b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9784b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9794b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9801b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9811b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9821b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9835903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // processing the CallExpr. 10010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10035903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (SP->getStmt() == CalleeSF->getCallSite()) 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1009253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10115903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const Stmt *CE = CalleeSF->getCallSite(); 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1026253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1027253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1028253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1029253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1030253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10315903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10325903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10335903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10345903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10355903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10365903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10375903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1040c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1041253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1042253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NodeBuilderWithSinks &nodeBuilder) { 104327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 104427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1045c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 104627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1047c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1048ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1049253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1050253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 1051749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1052749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1053749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10545903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10553bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10575903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10583bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1059e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10603bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 10615903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10625903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10645903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1065b47dbcbc12430fdf3e5a5b9f59cdec5480e89e75Anna Zaks if ((!AMgr.NoRetryExhausted && replayWithoutInlining(pred, CalleeLC))) 1066253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1067253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10685903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1069749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1070253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1071253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1072253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 107327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1074e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1075e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1076e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1077e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1078e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1079e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10808bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 10815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 10825eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 10835eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 108605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 1087a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 10881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 10901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 109205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 10931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10942de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 10951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 109705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 109805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 109905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 110005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 11011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11029c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 11032de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 110403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 11051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 110705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 111005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 111156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 111256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 11131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 111505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 11161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 112056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 112105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 112256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 11231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11245eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 11281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11299c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11319c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 11325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 113305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 113405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 113505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 113605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 11376ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11386ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11406ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1142294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1144294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1146294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11476ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 114803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11506ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11516ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11526ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11566ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11576ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11626ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11686ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11726ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11765eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11776ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11786ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11799c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1180a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1181ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11821aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1183a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1184a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1185f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1186f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1187b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11891aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1190a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11914e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1192b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1193b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119521028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 119621028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 119721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 11980fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1199f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1200f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 12014e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 12028ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1203f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 12048ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1206f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1207f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1208f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1209cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1210cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1211cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1212cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12148bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12155eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1216cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1217cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1220cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1221cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1225cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1226cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12275eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1228cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1229cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1230cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1231cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1232cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12330835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1234b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12350835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12365eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 12385eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12390835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 124073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 12415eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 12425eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 12435eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 12445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1245cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1248cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12490835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1250cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1251cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12528bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 12535eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 12545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1255cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1256cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1257cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1260cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12618bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 12625eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 12635eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1264cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1265cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1266cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1267cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1268f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1269f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1270f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1271e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1272754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1273ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12758bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12765eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1278754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1279754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1280754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12814a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1282754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1283754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1285d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1286754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12871c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1288ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1290ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 129124f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1292a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1293754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1294754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1295754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1297b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1298754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1299754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13001c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1301754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 13022055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 13032055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 13042055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1305754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1306754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1308754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1309b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1311754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1312a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1313754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1314f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1315d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 131673099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1317af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1318af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1319af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1320af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 13214d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 132273099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 132373099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1324d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1325daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1326e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1327d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13299c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1331daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13325b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13332055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1334b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13352055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13362055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1337daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1338daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13395b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1340692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13418bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 134234feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 134334feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 134434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134634feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1347e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1348e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1349e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1350e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13519c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 135272afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 135372afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 135485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 135585df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1357daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 135885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 135985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 136085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 136114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 136214a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1364daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1365daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1366aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136814a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 136985df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13709c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 137148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1372b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13748bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1375a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1377daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1378daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1379daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13801c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1381daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1382daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1384daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1385daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 138648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13878bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 138848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 138948569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 139048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 139148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 139248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 139348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 139448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13955014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1396b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 139714a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 139885df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 139914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 14001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 140285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 14031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1405daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14074d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14084d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14164d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14174d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14184d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14194d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14204d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14214d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14224d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14234d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14244d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1425daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1426daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1427e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1428ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1429e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1430d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1431d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1432d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1433d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1434aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1435ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14368bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14386d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14399c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1440591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(Ex->isGLValue()); 1441d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1442a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1443892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1444892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1445892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1446892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1447892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1448892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1449892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1450852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14516d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14525eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1453ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1454852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1455892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14569c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1457591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(!Ex->isGLValue()); 1458c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14595eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14606d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1461892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14629c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1463c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 14645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1465ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14666d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14671b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14685aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 14695aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek // FIXME: Compute lvalue of fields. 14705aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 14715aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek false, 0, ProgramPoint::PostLValueKind); 14725aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14735aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14745aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 14756d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 14766d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 14773271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14783271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1479540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14809c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14819c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14829c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14849c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1486892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14888f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14898f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14908f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1491aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1492ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14938f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14948f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14955eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14968bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 14985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 14995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 1500591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(A->isGLValue()); 15015eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1502ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 15031b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1504540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1505540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1506469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15079c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15086889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15106889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 15116889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 15125bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 151310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 15145bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 1515591b5f53c0e11d87401b4804bb1be1a53f95c619Anna Zaks assert(M->isGLValue()); 1516ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 15175bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1518ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15195bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15205bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 152110f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 152210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek // Handle C++ method calls. 152310f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(member)) { 152410f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.takeNodes(Pred); 152510f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek SVal MDVal = svalBuilder.getFunctionPointer(MD); 152610f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek ProgramStateRef state = 152710f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Pred->getState()->BindExpr(M, Pred->getLocationContext(), MDVal); 152810f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek Bldr.generateNode(M, Pred, state); 152910f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek return; 153010f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek } 153110f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 153210f77ad7fc5e5cf3f37a9b14ff5843468b8b84d2Ted Kremenek 15335bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1534892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 153586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 153686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1537e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15388bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15405eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1541e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1542e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1543e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1544e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1545e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1546e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1548e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1549e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1550892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1551e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1552e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1553e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1554d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1555e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1556e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1557719b429e3ed660cfd9cce88397b29c695a25fa50Anna Zaks if (M->isGLValue()) 15585eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1559ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1560ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1561ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1562bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1563ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1564ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1565469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1566469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15679c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15689c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15699c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 157093bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15713d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1572b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1573b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1574fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1575fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15763d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15773d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1578b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15796b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1580aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15816b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15823d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1583b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1584b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15853d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15863d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1587a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1588b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1589b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1590b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1591f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1592fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1593fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1594fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1595f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15973d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15983d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15993d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 16003d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 16013d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 16023d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks Bldr.generateNode(L, PredI, state, false); 1603b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1604ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 16056b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1606a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1607a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 16089c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1609a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 16102e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param AssignE The assignment expression if the store happens in an 1611e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 16122e6f5b823912ae76211427cb8684c9eaa6e53a1fJames Dennett/// @param LocationE The location expression that is stored to. 1613a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1614a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1615a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 16169c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 16179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 16189c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16198bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1620ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 162114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 162214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 162314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 162414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 162514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1626b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 162714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 162814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16291b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1630b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1631bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 16321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1633b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16341b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1635b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 163673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 163773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1638a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1639b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16403d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16411b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16421b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1643bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1644bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1645bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1646bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1647bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1648bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1649bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1650bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1651bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 1652cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 1653bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(!isa<loc::ObjCPropRef>(location)); 165414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16555b8c69494881b7d35bc6244b4a19be0cc2eab368Jordan Rose // Are we loading from a region? This actually results in two loads; one 1656852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1657852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16589697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16599697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1660b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1661018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1662852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1663ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1664ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1665852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1666bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1667bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1668852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1669852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1670852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1671852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1672db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1673bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1674bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1675b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1676852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1677852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1678852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1679b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1680bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1681852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1682852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1683bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1684bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1685bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1686bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1687bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1688bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1689bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1690bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1691bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1692bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 16931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1694b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1695bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1696b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16971b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1698b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1699aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 170073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 170173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1702b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17031b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1704b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1705db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 17065eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 170796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1708b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1709b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1710bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1711bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->BindExpr(BoundEx, LCtx, UnknownVal()), 1712bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek false, tag, 1713bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramPoint::PostLoadKind); 1714b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1715b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 171696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1717bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 171896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1719bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1720bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->bindExprAndLocation(BoundEx, LCtx, location, V), 1721ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1722b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1723d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 17241b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 17251b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1726bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1727bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1728bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1729bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1730bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1731bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1732bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1733bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 1734aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 173500b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1736769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1737b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1738b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1739b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17409c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1741ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1742aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1743ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1744eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1745eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1746eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1747eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1748eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1749eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1750eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1751eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1752ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1753ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1754ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1755bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, Pred, state, false, &etag); 17560296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1757ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1758bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1759bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1760ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1761ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1762ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17636c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17646c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17656c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17666c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17676c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17686c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17696c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17706c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1771d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17726800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1773aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 177486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1775031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1776031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1777b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1778b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1779b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1781b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1782b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1784b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17858bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17865eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17875344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17885344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17896c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17906c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17916c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 179248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17938bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 179486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17955eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1796ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 179748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 18008bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 180186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 18025eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1803ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 180448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 180548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 180648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 180748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 180848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 18099c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1810a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1811a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1812a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1813a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 18141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1815a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1816a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1817a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 18181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1819a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 18201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1821a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1822a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1823a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1824a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1826a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1827a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1828ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 18291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1830a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1831ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1832ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 18338cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosiervoid ExprEngine::VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred, 18348cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier ExplodedNodeSet &Dst) { 18358cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 18368cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier Bldr.generateNode(A, Pred, Pred->getState()); 18378cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier} 18388cd64b4c5553fa6284d248336cb7c82dc960a394Chad Rosier 1839094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1840e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1841ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1842ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1843aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1844d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1845e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18463b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1847aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1848aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 184947491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1850aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1851006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1852006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1853006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1854d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1855ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18569c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 185810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 185910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 186010f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1861a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18629dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18634a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18644a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18654a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18665e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18672ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18682ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1869a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18718cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18728cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18732055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1874a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1875a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18779c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 187953ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 188053ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1881803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1882803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1883aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1885aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 18860b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 18871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1888aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 18890b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 18900b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 18910b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 18920b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 18930b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 18940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 1895aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 18971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1898aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1899aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1900aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 19011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1902102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1903102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1904102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1905102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19060b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 19070b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 19080b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19090b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19100b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 19110b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 19120b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19130b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19140b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 19150b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 19160b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19170b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19180b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 19190b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 1920102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1921102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 19235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 19245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 19255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1926aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 19275f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 19289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 19298c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 19308c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1932e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1933e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 19341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 19368c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1937642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19387da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1939a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 19407da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 19418c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19435f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 19441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 19455f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 19467090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 19477090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 19487090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 19497090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 19507090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 19511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 195210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 195310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 195410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19558c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19568c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19608c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19618c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19628c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19638c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19648c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19658c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19668c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19678c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19688c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19698c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19708c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 197110f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19738c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19748c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19758c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19769c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1977aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1978aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19809c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1982e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1984b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1985e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1986e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19889b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19899b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1990642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19917da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1992a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19939b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1995daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19969c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19999c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 2000daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 2001e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 2002e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 20031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20049c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 2005daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 2006e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 2007daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2009daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 2010daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2011daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 2012daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 2013daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 2014daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2015daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2017daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2018daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2019daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2020b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2021b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2022b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2023b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2024b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2025b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2026b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 20271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2028b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2030b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2031b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 203310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 203410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 203510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 20364a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 20374a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 20383b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 203910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2040aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2041aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 20421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 2044a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 20458673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 20465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2047ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2048ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2049ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2050ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2051ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2052ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2053ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2054aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2055aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2056aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2058aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2059aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2060ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20617ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20629c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20637ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2064031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2065031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2066031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20677ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20687ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2069ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2070ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2071d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2073ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2074031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2075940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2076940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2077940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2078940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2079940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2080940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2081940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2082404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2083404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 20844a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2085404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2086940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20887ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2089ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2090493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2091493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2092493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2093ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2094d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2096493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2097493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2098493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2099493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2100493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2101493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2102d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2103493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2104493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2105493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 21061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2107031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2108493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2109cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 21106cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2111cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2112d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 21131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21143b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2115e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2116e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2117ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2118