ExprEngine.cpp revision 0b3ade86a1c60cf0c7b56aa238aff458eb7f5974
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) { 164a078ecf3484d62b01d9f8c01e0fecffd65c583e1Ted Kremenek loc::MemRegionVal L(getCXXThisRegion(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. 253ff80afcfb2b00ccffcb6cb10528bec565fc59eddAnna Zaks if (isa<CallExpr>(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()); 376d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu const CXXThisRegion *thisReg = getCXXThisRegion(decl, stackFrame); 377d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 378056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal thisVal = Pred->getState()->getSVal(thisReg); 3799dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 38000eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet if (BMI->isAnyMemberInitializer()) { 3819dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu // Evaluate the initializer. 3829dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 383e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 384e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen ProgramStateRef state = Pred->getState(); 3859dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 386e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen const FieldDecl *FD = BMI->getAnyMember(); 3879dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 388e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal FieldLoc = state->getLValue(FD, thisVal); 389e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen SVal InitVal = state->getSVal(BMI->getInit(), Pred->getLocationContext()); 390e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen state = state->bindLoc(FieldLoc, InitVal); 3919dc84c9455df2a77195147d0210c915dc1775a88Zhongxing Xu 392e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Use a custom node building process. 393e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen PostInitializer PP(BMI, stackFrame); 394e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Builder automatically add the generated node to the deferred set, 395e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // which are processed in the builder's dtor. 396e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Bldr.generateNode(PP, Pred, state); 397056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } else { 398056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(BMI->isBaseInitializer()); 399056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 400056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Get the base class declaration. 401056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const CXXConstructExpr *ctorExpr = cast<CXXConstructExpr>(BMI->getInit()); 402056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks 403056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks // Create the base object region. 404056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks SVal baseVal = 405056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks getStoreManager().evalDerivedToBase(thisVal, ctorExpr->getType()); 406056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const MemRegion *baseReg = baseVal.getAsRegion(); 407056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks assert(baseReg); 408d074441e027471a914cbb909a7aad1d43224950fZhongxing Xu 409056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks VisitCXXConstructExpr(ctorExpr, baseReg, Pred, Dst); 410056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks } 411dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks 412dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 413dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4149c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu} 4159c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 416d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessImplicitDtor(const CFGImplicitDtor D, 417ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNode *Pred) { 418ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Dst; 4193c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek switch (D.getKind()) { 4204ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::AutomaticObjectDtor: 421056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessAutomaticObjDtor(cast<CFGAutomaticObjDtor>(D), Pred, Dst); 4224ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4234ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::BaseDtor: 424056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessBaseDtor(cast<CFGBaseDtor>(D), Pred, Dst); 4254ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4264ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::MemberDtor: 427056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessMemberDtor(cast<CFGMemberDtor>(D), Pred, Dst); 4284ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4294ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu case CFGElement::TemporaryDtor: 430056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ProcessTemporaryDtor(cast<CFGTemporaryDtor>(D), Pred, Dst); 4314ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu break; 4324ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu default: 4334ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu llvm_unreachable("Unexpected dtor kind."); 4344ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu } 435ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 436dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks // Enqueue the new nodes onto the work list. 437dd7ddf2b2296f95e7591ca3f9791f0eb9a15ee42Anna Zaks Engine.enqueue(Dst, currentBuilderContext->getBlock(), currentStmtIdx); 4384ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4394ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 440056c4b46335a3bd2612414735d5749ee159c0165Anna Zaksvoid ExprEngine::ProcessAutomaticObjDtor(const CFGAutomaticObjDtor Dtor, 441056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 442056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) { 4438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 444056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks const VarDecl *varDecl = Dtor.getVarDecl(); 4452210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4462210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu QualType varType = varDecl->getType(); 4472210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4482210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu if (const ReferenceType *refType = varType->getAs<ReferenceType>()) 4492210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu varType = refType->getPointeeType(); 4502210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu 4512210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXRecordDecl *recordDecl = varType->getAsCXXRecordDecl(); 4522210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu assert(recordDecl && "get CXXRecordDecl fail"); 4532210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu const CXXDestructorDecl *dtorDecl = recordDecl->getDestructor(); 454b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 455056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Loc dest = state->getLValue(varDecl, Pred->getLocationContext()); 456b13453bd8a91f331d0910ca95ad52aa41b52f648Zhongxing Xu 4572210490e6d099b7a5b4f68f44a136e4dcf3cdea2Zhongxing Xu VisitCXXDestructor(dtorDecl, cast<loc::MemRegionVal>(dest).getRegion(), 458056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks Dtor.getTriggerStmt(), Pred, Dst); 4594ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu} 4604ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 461d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessBaseDtor(const CFGBaseDtor D, 462056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4634ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 464d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessMemberDtor(const CFGMemberDtor D, 465056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, ExplodedNodeSet &Dst) {} 4664ffcb9974c6b7142c4a1483abfcb1f88b6371c45Zhongxing Xu 467d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ProcessTemporaryDtor(const CFGTemporaryDtor D, 468056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNode *Pred, 469056c4b46335a3bd2612414735d5749ee159c0165Anna Zaks ExplodedNodeSet &Dst) {} 4709c6cd67ea416bace666d614c84d5531124287653Zhongxing Xu 4719c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred, 4726889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &DstTop) { 4730bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 4740bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek S->getLocStart(), 4750bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek "Error evaluating statement"); 4766889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 4776889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, DstTop, *currentBuilderContext); 4780bed8a12f2878d3cd94fb8bdba55b593d92dd11aTed Kremenek 479f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Expressions to ignore. 480f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall if (const Expr *Ex = dyn_cast<Expr>(S)) 481892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek S = Ex->IgnoreParens(); 482f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 483e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: add metadata to the CFG so that we can disable 484e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // this check when we KNOW that there is no block-level subexpression. 485e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // The motivation is that this check requires a hashtable lookup. 4861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 487ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (S != currentStmt && Pred->getLocationContext()->getCFG()->isBlkExpr(S)) 488e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek return; 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 490e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek switch (S->getStmtClass()) { 491f85e193739c953358c865005855253af4f68a497John McCall // C++ and ARC stuff we don't support yet. 492f85e193739c953358c865005855253af4f68a497John McCall case Expr::ObjCIndirectCopyRestoreExprClass: 4931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXDependentScopeMemberExprClass: 4941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXPseudoDestructorExprClass: 4951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTryStmtClass: 4961b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CXXTypeidExprClass: 4979be88403e965cc49af76c9d33d818781d44b333eFrancois Pichet case Stmt::CXXUuidofExprClass: 498c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::CXXUnresolvedConstructExprClass: 499ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor case Stmt::CXXScalarValueInitExprClass: 5001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DependentScopeDeclRefExprClass: 5011b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnaryTypeTraitExprClass: 5026ad6f2848d7652ab2991286eb48be440d3493b28Francois Pichet case Stmt::BinaryTypeTraitExprClass: 5034ca8ac2e61c37ddadf37024af86f3e1019af8532Douglas Gregor case Stmt::TypeTraitExprClass: 50421ff2e516b0e0bc8c1dbf965cb3d44bac3c64330John Wiegley case Stmt::ArrayTypeTraitExprClass: 505552622067dc45013d240f73952fece703f5e63bdJohn Wiegley case Stmt::ExpressionTraitExprClass: 5061b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::UnresolvedLookupExprClass: 507c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek case Stmt::UnresolvedMemberExprClass: 5086b219d082434394c1ac401390ec1d1967727815aSebastian Redl case Stmt::CXXNoexceptExprClass: 509be230c36e32142cbdcdbe9c97511d097beeecbabDouglas Gregor case Stmt::PackExpansionExprClass: 510c7793c73ba8a343de3f2552d984851985a46f159Douglas Gregor case Stmt::SubstNonTypeTemplateParmPackExprClass: 51128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHTryStmtClass: 51228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley case Stmt::SEHExceptStmtClass: 51301d08018b7cf5ce1601707cfd7a84d22015fc04eDouglas Gregor case Stmt::LambdaExprClass: 514ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::SEHFinallyStmtClass: { 515337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek const ExplodedNode *node = Bldr.generateNode(S, Pred, Pred->getState(), 516337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek /* sink */ true); 517ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Engine.addAbortedBlock(node, currentBuilderContext->getBlock()); 518c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek break; 519c768a0c46e6c064c3281d663777ee95aea8652eeTed Kremenek } 5205fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 5215fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // We don't handle default arguments either yet, but we can fake it 5225fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek // for now by just skipping them. 52391a5755ad73c5dc1dfb167e448fdd74e75a6df56John McCall case Stmt::SubstNonTypeTemplateParmExprClass: 524ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::CXXDefaultArgExprClass: 5255fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek break; 5265fe98728dca1f3a7a378ce1a21984a0f8a0c0b8bTed Kremenek 527f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall case Stmt::ParenExprClass: 528f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall llvm_unreachable("ParenExprs already handled."); 529f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 530f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne llvm_unreachable("GenericSelectionExprs already handled."); 5311b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases that should never be evaluated simply because they shouldn't 5321b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // appear in the CFG. 5331b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::BreakStmtClass: 5341b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CaseStmtClass: 5351b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::CompoundStmtClass: 5361b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ContinueStmtClass: 53746eaf7789a1059a7b42b7dbd183150c72df5738fTed Kremenek case Stmt::CXXForRangeStmtClass: 5381b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DefaultStmtClass: 5391b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DoStmtClass: 540d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::ForStmtClass: 5411b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::GotoStmtClass: 542d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::IfStmtClass: 5431b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::IndirectGotoStmtClass: 5441b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::LabelStmtClass: 545534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith case Stmt::AttributedStmtClass: 5461b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NoStmtClass: 5471b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::NullStmtClass: 548d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::SwitchStmtClass: 549d40066b0fb883839a9100e5455e33190b9b8abacTed Kremenek case Stmt::WhileStmtClass: 550ba0513de93d2fab6db5ab30b6927209fcc883078Douglas Gregor case Expr::MSDependentExistsStmtClass: 5511b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek llvm_unreachable("Stmt should not be in analyzer evaluation loop"); 5521b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 5538ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek case Stmt::GNUNullExprClass: { 5548f08426e6f54ed20b959018f24dbea106a00b4adJordy Rose // GNU __null is a pointer-width integer, not an actual pointer. 5558bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 5565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state = state->BindExpr(S, Pred->getLocationContext(), 5575eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek svalBuilder.makeIntValWithPtrWidth(0, false)); 558ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, state); 5598ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek break; 5608ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek } 5618ad9cbc518a603176462f1fa1efe389023590082Ted Kremenek 5624beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 563ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 5644beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek VisitObjCAtSynchronizedStmt(cast<ObjCAtSynchronizedStmt>(S), Pred, Dst); 565ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 5664beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek break; 5674beaa9f51b2da57c64740cef2bd1c2fdb0c325d5Ted Kremenek 5681a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME. 5691a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCSubscriptRefExprClass: 5701a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 5711a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 57214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis case Stmt::ObjCPropertyRefExprClass: 573f8b5aae41e46f94fe90ed5f1ee98f36f0aa59dc9Ted Kremenek // Implicitly handled by Environment::getSVal(). 57414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis break; 57514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 576f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ImplicitValueInitExprClass: { 5778bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 578f85e193739c953358c865005855253af4f68a497John McCall QualType ty = cast<ImplicitValueInitExpr>(S)->getType(); 579f85e193739c953358c865005855253af4f68a497John McCall SVal val = svalBuilder.makeZeroVal(ty); 5805eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, state->BindExpr(S, Pred->getLocationContext(), 5815eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek val)); 582f85e193739c953358c865005855253af4f68a497John McCall break; 583f85e193739c953358c865005855253af4f68a497John McCall } 584f85e193739c953358c865005855253af4f68a497John McCall 585ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks case Stmt::ExprWithCleanupsClass: 586e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen // Handled due to fully linearised CFG. 587f85e193739c953358c865005855253af4f68a497John McCall break; 588f85e193739c953358c865005855253af4f68a497John McCall 5891b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases not handled yet; but will handle some day. 5901b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::DesignatedInitExprClass: 5911b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ExtVectorElementExprClass: 5921b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ImaginaryLiteralClass: 5931b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtCatchStmtClass: 5941b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtFinallyStmtClass: 5951b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCAtTryStmtClass: 596f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCAutoreleasePoolStmtClass: 5971b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCEncodeExprClass: 5981b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCIsaExprClass: 5991b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCProtocolExprClass: 6001b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ObjCSelectorExprClass: 601eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard case Expr::ObjCBoxedExprClass: 6021b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ParenListExprClass: 6031b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::PredefinedExprClass: 6041b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::ShuffleVectorExprClass: 6051b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek case Stmt::VAArgExprClass: 606e08ce650a2b02410eddd1f60a4aa6b3d4be71e73Peter Collingbourne case Stmt::CUDAKernelCallExprClass: 60756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::OpaqueValueExprClass: 60861eee0ca33b29e102f11bab77c8b74cc00e2392bTanya Lattner case Stmt::AsTypeExprClass: 609276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman case Stmt::AtomicExprClass: 610337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 6111b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek 612337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Currently all handling of 'throw' just falls to the CFG. We 613337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // can consider doing more if necessary. 614337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXThrowExprClass: 615337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek // Fall through. 616337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 6171b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // Cases we intentionally don't evaluate, since they don't need 6181b49d762e9658b6b6d1b677dca005324a7b1126dTed Kremenek // to be explicitly evaluated. 619bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::AddrLabelExprClass: 620bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::IntegerLiteralClass: 621bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::CharacterLiteralClass: 622477323d58a0de352c6a61e08b5a83127c4adc904Zhongxing Xu case Stmt::CXXBoolLiteralExprClass: 6231a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Stmt::ObjCBoolLiteralExprClass: 624bc9ad74a13e83303a3a5251f8bacbbca17341c17Zhongxing Xu case Stmt::FloatingLiteralClass: 625f901a7de97f46ba2b1ff153f9fb83d00dc37cfcfDouglas Gregor case Stmt::SizeOfPackExprClass: 626e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::StringLiteralClass: 627e739a29c62c67eaec0af5c4d5c75f9e8f11228bdTed Kremenek case Stmt::ObjCStringLiteralClass: 628cc2c4b293d8590346f26b7ecc16d299226b8794fTed Kremenek case Stmt::CXXBindTemporaryExprClass: 629bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek case Stmt::CXXNullPtrLiteralExprClass: { 630bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.takeNodes(Pred); 631bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek ExplodedNodeSet preVisit; 632bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 633bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek getCheckerManager().runCheckersForPostStmt(Dst, preVisit, S, *this); 634bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek Bldr.addNodes(Dst); 635e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 636bdd4c848349d4091d66b052efa453e6d69a77e36Ted Kremenek } 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6381a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCArrayLiteralClass: 6391a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek case Expr::ObjCDictionaryLiteralClass: { 6401a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.takeNodes(Pred); 6411a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6421a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet preVisit; 6431a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPreStmt(preVisit, Pred, S, *this); 6441a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6451a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // FIXME: explicitly model with a region and the actual contents 6461a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek // of the container. For now, conjure a symbol. 6471a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNodeSet Tmp; 6481a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek StmtNodeBuilder Bldr2(preVisit, Tmp, *currentBuilderContext); 6491a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6501a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek for (ExplodedNodeSet::iterator it = preVisit.begin(), et = preVisit.end(); 6511a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek it != et; ++it) { 6521a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ExplodedNode *N = *it; 6531a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const Expr *Ex = cast<Expr>(S); 6541a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek QualType resultType = Ex->getType(); 6551a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek const LocationContext *LCtx = N->getLocationContext(); 6561a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek SVal result = 6571a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek svalBuilder.getConjuredSymbolVal(0, Ex, LCtx, resultType, 6581a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek currentBuilderContext->getCurrentBlockCount()); 6591a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek ProgramStateRef state = N->getState()->BindExpr(Ex, LCtx, result); 6601a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr2.generateNode(S, N, state); 6611a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6621a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 6631a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek getCheckerManager().runCheckersForPostStmt(Dst, Tmp, S, *this); 6641a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek Bldr.addNodes(Dst); 6651a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek break; 6661a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek } 6671a45a5ff5d495cb6cd9a3d4d06317af79c0f634dTed Kremenek 668540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek case Stmt::ArraySubscriptExprClass: 669ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 670892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalArraySubscriptExpr(cast<ArraySubscriptExpr>(S), Pred, Dst); 671ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 672540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek break; 6731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 674e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::AsmStmtClass: 675ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 676e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitAsmStmt(cast<AsmStmt>(S), Pred, Dst); 677ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 678e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 679b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 680c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek case Stmt::BlockExprClass: 681ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 682c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek VisitBlockExpr(cast<BlockExpr>(S), Pred, Dst); 683ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 684c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek break; 685c95ad9ff6e574aecdd759542d5578bc65d586d93Ted Kremenek 686e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::BinaryOperatorClass: { 68703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(S); 688e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek if (B->isLogicalOp()) { 689ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 690e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitLogicalExpr(B, Pred, Dst); 691ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 692e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 693e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 6942de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall else if (B->getOpcode() == BO_Comma) { 6958bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 696ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(B, Pred, 6975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(B, Pred->getLocationContext(), 6985eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(B->getRHS(), 6995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 700e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 701e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 70206fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 703ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 704ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 705b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek if (AMgr.shouldEagerlyAssume() && 706bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu (B->isRelationalOp() || B->isEqualityOp())) { 707031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 708892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Tmp); 7099c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, cast<Expr>(S)); 71048af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 71148af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek else 712892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 71348af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 714ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 715e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 716e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 71706fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 718b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CallExprClass: 719b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek case Stmt::CXXOperatorCallExprClass: 7209fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::CXXMemberCallExprClass: 7219fcce65e7e1307b5b8da9be13e4092d6bb94dc1dRichard Smith case Stmt::UserDefinedLiteralClass: { 722ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 723b277159055933e610bbc80262b600d3ad7e0595cTed Kremenek VisitCallExpr(cast<CallExpr>(S), Pred, Dst); 724ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 72506fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek break; 726e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 727337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek 728337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek case Stmt::CXXCatchStmtClass: { 729337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.takeNodes(Pred); 730337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek VisitCXXCatchStmt(cast<CXXCatchStmt>(S), Pred, Dst); 731337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek Bldr.addNodes(Dst); 732337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek break; 733337e4dbc6859589b8878146a88bebf754e916702Ted Kremenek } 73406fb99fb403bff1651429923f666a2ebe2b1522fTed Kremenek 735744f1cd66bb6747ea71fbf1172698e7bf35ec88dTed Kremenek case Stmt::CXXTemporaryObjectExprClass: 7367ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu case Stmt::CXXConstructExprClass: { 7377ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu const CXXConstructExpr *C = cast<CXXConstructExpr>(S); 7387ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // For block-level CXXConstructExpr, we don't have a destination region. 7397ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu // Let VisitCXXConstructExpr() create one. 740ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 741892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCXXConstructExpr(C, 0, Pred, Dst); 742ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7437ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu break; 7447ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu } 7457ce351db56fbce162a3b650518ce05b5c61ebf36Zhongxing Xu 746856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu case Stmt::CXXNewExprClass: { 747ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 74803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXNewExpr *NE = cast<CXXNewExpr>(S); 749856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu VisitCXXNewExpr(NE, Pred, Dst); 750ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 751856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu break; 752856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu } 753856c6bcaea56e05255e9f3997ddd56b5c18a14f0Zhongxing Xu 7546b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu case Stmt::CXXDeleteExprClass: { 755ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 75603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const CXXDeleteExpr *CDE = cast<CXXDeleteExpr>(S); 7576b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu VisitCXXDeleteExpr(CDE, Pred, Dst); 758ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 7596b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu break; 7606b8513829895e56a7b97e787ea74520bc626512eZhongxing Xu } 761e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // FIXME: ChooseExpr is really a constant. We need to fix 762e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek // the CFG do not model them as explicit control-flow. 7631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 764e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ChooseExprClass: { // __builtin_choose_expr 765ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 7669c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(S); 767e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitGuardedExpr(C, C->getLHS(), C->getRHS(), Pred, Dst); 768ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 769e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 770e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 772e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::CompoundAssignOperatorClass: 773ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 774892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitBinaryOperator(cast<BinaryOperator>(S), Pred, Dst); 775ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 776e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 777f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu 778f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu case Stmt::CompoundLiteralExprClass: 779ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 780892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCompoundLiteralExpr(cast<CompoundLiteralExpr>(S), Pred, Dst); 781ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 782f22679e3e5d5f5754931952e58112b4c863a4137Zhongxing Xu break; 7831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 785e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::ConditionalOperatorClass: { // '?' operator 786ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 78756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *C 78856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(S); 78956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall VisitGuardedExpr(C, C->getTrueExpr(), C->getFalseExpr(), Pred, Dst); 790ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 791e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 792e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 7931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 794bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu case Stmt::CXXThisExprClass: 795ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 796bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu VisitCXXThisExpr(cast<CXXThisExpr>(S), Pred, Dst); 797ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 798bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu break; 799bb141217871e93767aa3f2de1b9946fa6d37066aZhongxing Xu 800892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek case Stmt::DeclRefExprClass: { 801ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 802892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const DeclRefExpr *DE = cast<DeclRefExpr>(S); 803892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitCommonDeclRefExpr(DE, DE->getDecl(), Pred, Dst); 804ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 805e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 806892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 8071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 808e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::DeclStmtClass: 809ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 810e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst); 811ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 812e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 8131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8140835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case Stmt::ImplicitCastExprClass: 8150d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CStyleCastExprClass: 8160d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXStaticCastExprClass: 8170d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXDynamicCastExprClass: 8180d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXReinterpretCastExprClass: 8190d9d736c49b51691ced96759ec99399824e2a602Zhongxing Xu case Stmt::CXXConstCastExprClass: 820f85e193739c953358c865005855253af4f68a497John McCall case Stmt::CXXFunctionalCastExprClass: 821f85e193739c953358c865005855253af4f68a497John McCall case Stmt::ObjCBridgedCastExprClass: { 822ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 8239c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CastExpr *C = cast<CastExpr>(S); 824f85e193739c953358c865005855253af4f68a497John McCall // Handle the previsit checks. 825f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstPrevisit; 826f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPreStmt(dstPrevisit, Pred, C, *this); 827f85e193739c953358c865005855253af4f68a497John McCall 828f85e193739c953358c865005855253af4f68a497John McCall // Handle the expression itself. 829f85e193739c953358c865005855253af4f68a497John McCall ExplodedNodeSet dstExpr; 830f85e193739c953358c865005855253af4f68a497John McCall for (ExplodedNodeSet::iterator i = dstPrevisit.begin(), 831f85e193739c953358c865005855253af4f68a497John McCall e = dstPrevisit.end(); i != e ; ++i) { 832f85e193739c953358c865005855253af4f68a497John McCall VisitCast(C, C->getSubExpr(), *i, dstExpr); 833f85e193739c953358c865005855253af4f68a497John McCall } 834f85e193739c953358c865005855253af4f68a497John McCall 835f85e193739c953358c865005855253af4f68a497John McCall // Handle the postvisit checks. 836f85e193739c953358c865005855253af4f68a497John McCall getCheckerManager().runCheckersForPostStmt(Dst, dstExpr, C, *this); 837ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 838e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 839e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 840b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 84103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor case Expr::MaterializeTemporaryExprClass: { 842ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 84303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor const MaterializeTemporaryExpr *Materialize 84403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor = cast<MaterializeTemporaryExpr>(S); 845e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen if (Materialize->getType()->isRecordType()) 846e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen Dst.Add(Pred); 84703e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor else 848e711d7e7875920fee4180a26bfc67d67f0f71a2cErik Verbruggen CreateCXXTemporaryObject(Materialize, Pred, Dst); 849ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 85003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor break; 85103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor } 85203e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor 853c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu case Stmt::InitListExprClass: 854ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 855c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu VisitInitListExpr(cast<InitListExpr>(S), Pred, Dst); 856ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 857c4f8706b6539e06a5de153bd72850bb2e0a71456Zhongxing Xu break; 8581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85997ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::MemberExprClass: 860ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 861892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst); 862ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 863469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek break; 864ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 86597ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek case Stmt::ObjCIvarRefExprClass: 866ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 867892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitLvalObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst); 868ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 86997ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8Ted Kremenek break; 870af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek 871af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 872ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 873af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek VisitObjCForCollectionStmt(cast<ObjCForCollectionStmt>(S), Pred, Dst); 874ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 875af3374187c47acea45706eab6744be6b1c66a856Ted Kremenek break; 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 877b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek case Stmt::ObjCMessageExprClass: { 878ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 879b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek // Is this a property access? 880b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ParentMap &PM = Pred->getLocationContext()->getParentMap(); 881b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(S); 882b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool evaluated = false; 883b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 884b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const PseudoObjectExpr *PO = 885b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast_or_null<PseudoObjectExpr>(PM.getParent(S))) { 886b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek const Expr *syntactic = PO->getSyntacticForm(); 887b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (const ObjCPropertyRefExpr *PR = 888b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek dyn_cast<ObjCPropertyRefExpr>(syntactic)) { 889b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek bool isSetter = ME->getNumArgs() > 0; 890b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, PR, isSetter), Pred, Dst); 891b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek evaluated = true; 892b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 893b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek else if (isa<BinaryOperator>(syntactic)) { 894b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ObjCMessage(ME, 0, true), Pred, Dst); 895b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 896b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 897b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 898b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek if (!evaluated) 899b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek VisitObjCMessage(ME, Pred, Dst); 900b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek 901ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 902e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 903b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek } 9041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 905bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek case Stmt::ObjCAtThrowStmtClass: { 906bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // FIXME: This is not complete. We basically treat @throw as 907bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek // an abort. 908ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(S, Pred, Pred->getState()); 909bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek break; 910bbfd07a0c94f659beaf74316029ef73769cefb81Ted Kremenek } 9111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9121b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek case Stmt::ReturnStmtClass: 913ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9141b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek VisitReturnStmt(cast<ReturnStmt>(S), Pred, Dst); 915ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9161b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9188ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor case Stmt::OffsetOfExprClass: 919ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 9208ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor VisitOffsetOfExpr(cast<OffsetOfExpr>(S), Pred, Dst); 921ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9228ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor break; 9238ecdb65716cd7914ffb2eeee993fa9039fcd31e8Douglas Gregor 924f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne case Stmt::UnaryExprOrTypeTraitExprClass: 925ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 926f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne VisitUnaryExprOrTypeTraitExpr(cast<UnaryExprOrTypeTraitExpr>(S), 927f4e3cfbe8abd124be6341ef5d714819b4fbd9082Peter Collingbourne Pred, Dst); 928ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 929e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 9301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 931e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek case Stmt::StmtExprClass: { 9329c378f705405d37f49795d5e915989de774fe11fTed Kremenek const StmtExpr *SE = cast<StmtExpr>(S); 933a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek 934a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek if (SE->getSubStmt()->body_empty()) { 935a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek // Empty statement expression. 936a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek assert(SE->getType() == getContext().VoidTy 937a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek && "Empty statement expression must have void type."); 938a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek break; 939a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 9401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9419c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (Expr *LastExpr = dyn_cast<Expr>(*SE->getSubStmt()->body_rbegin())) { 9428bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 943ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(SE, Pred, 9445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(SE, Pred->getLocationContext(), 9455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(LastExpr, 9465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext()))); 947a3d1eb85853eae7b719f679b40923826b5e4b7dfTed Kremenek } 948e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek break; 949e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek } 9506987c7b74146b9658b1925c5981f8b0cd0672b55Zhongxing Xu 95172374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek case Stmt::UnaryOperatorClass: { 952ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 95303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const UnaryOperator *U = cast<UnaryOperator>(S); 954ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (AMgr.shouldEagerlyAssume() && (U->getOpcode() == UO_LNot)) { 955031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNodeSet Tmp; 956892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Tmp); 9579c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek evalEagerlyAssume(Dst, Tmp, U); 95872374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 95972374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek else 960892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek VisitUnaryOperator(U, Pred, Dst); 961ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 9621b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek break; 96372374594c5d9ade02451bc85cf9dfa5b0ea106e7Ted Kremenek } 9644b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9654b9c2d235fb9449e249d74f48ecfec601650de93John McCall case Stmt::PseudoObjectExprClass: { 9664b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.takeNodes(Pred); 9678bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 9684b9c2d235fb9449e249d74f48ecfec601650de93John McCall const PseudoObjectExpr *PE = cast<PseudoObjectExpr>(S); 9694b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (const Expr *Result = PE->getResultExpr()) { 9705eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Result, Pred->getLocationContext()); 9715eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9725eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), V)); 9734b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9744b9c2d235fb9449e249d74f48ecfec601650de93John McCall else 9755eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(S, Pred, 9765eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->BindExpr(S, Pred->getLocationContext(), 9775eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek UnknownVal())); 9784b9c2d235fb9449e249d74f48ecfec601650de93John McCall 9794b9c2d235fb9449e249d74f48ecfec601650de93John McCall Bldr.addNodes(Dst); 9804b9c2d235fb9449e249d74f48ecfec601650de93John McCall break; 9814b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 9821b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 9831b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 9841b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 9855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaksbool ExprEngine::replayWithoutInlining(ExplodedNode *N, 9865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC) { 9875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 9885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const StackFrameContext *CallerSF = CalleeSF->getParent()->getCurrentStackFrame(); 9895903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks assert(CalleeSF && CallerSF); 9905903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *BeforeProcessingCall = 0; 9915903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9925903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Find the first node before we started processing the call expression. 9935903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks while (N) { 9945903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint L = N->getLocation(); 9955903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks BeforeProcessingCall = N; 9965903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks N = N->pred_empty() ? NULL : *(N->pred_begin()); 9975903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 9985903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Skip the nodes corresponding to the inlined code. 9995903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (L.getLocationContext()->getCurrentStackFrame() != CallerSF) 10005903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10015903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // We reached the caller. Find the node right before we started 10025903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // processing the CallExpr. 10030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (L.isPurgeKind()) 10045903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10055903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (const StmtPoint *SP = dyn_cast<StmtPoint>(&L)) 10065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks if (SP->getStmt() == CalleeSF->getCallSite()) 10075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks continue; 10085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 10095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 10105903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1011253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!BeforeProcessingCall) 10125903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return false; 10135903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10145903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // TODO: Clean up the unneeded nodes. 10155903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10165903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Build an Epsilon node from which we will restart the analyzes. 10175903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const Stmt *CE = CalleeSF->getCallSite(); 10185903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramPoint NewNodeLoc = 10195903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks EpsilonPoint(BeforeProcessingCall->getLocationContext(), CE); 10205903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the special flag to GDM to signal retrying with no inlining. 10215903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Note, changing the state ensures that we are not going to cache out. 10225903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ProgramStateRef NewNodeState = BeforeProcessingCall->getState(); 10235903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNodeState = NewNodeState->set<ReplayWithoutInlining>((void*)CE); 10245903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10255903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Make the new node a successor of BeforeProcessingCall. 10265903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool IsNew = false; 10275903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks ExplodedNode *NewNode = G.getNode(NewNodeLoc, NewNodeState, false, &IsNew); 1028253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // We cached out at this point. Caching out is common due to us backtracking 1029253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // from the inlined function, which might spawn several paths. 1030253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks if (!IsNew) 1031253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return true; 1032253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 10335903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NewNode->addPredecessor(BeforeProcessingCall, G); 10345903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 10355903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Add the new node to the work list. 10365903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Engine.enqueueStmtNode(NewNode, CalleeSF->getCallSiteBlock(), 10375903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks CalleeSF->getIndex()); 10385903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks NumTimesRetriedWithoutInlining++; 10395903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return true; 10405903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks} 10415903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1042c03a39e16762627b421247b12a2658be630a3300Anna Zaks/// Block entrance. (Update counters). 1043253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaksvoid ExprEngine::processCFGBlockEntrance(const BlockEdge &L, 1044253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NodeBuilderWithSinks &nodeBuilder) { 104527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 104627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek // FIXME: Refactor this into a checker. 1047c03a39e16762627b421247b12a2658be630a3300Anna Zaks ExplodedNode *pred = nodeBuilder.getContext().getPred(); 104827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 1049c03a39e16762627b421247b12a2658be630a3300Anna Zaks if (nodeBuilder.getContext().getCurrentBlockCount() >= AMgr.getMaxVisit()) { 1050ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag tag("ExprEngine : Block count exceeded"); 1051253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks const ExplodedNode *Sink = 1052253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks nodeBuilder.generateNode(pred->getState(), pred, &tag, true); 1053749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks 1054749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Check if we stopped at the top level function or not. 1055749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks // Root node should have the location context of the top most function. 10565903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *CalleeLC = pred->getLocation().getLocationContext(); 10573bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks const LocationContext *CalleeSF = CalleeLC->getCurrentStackFrame(); 10585903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks const LocationContext *RootLC = 10595903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks (*G.roots_begin())->getLocation().getLocationContext(); 10603bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks if (RootLC->getCurrentStackFrame() != CalleeSF) { 1061e62f048960645b79363408fdead53fec2a063c52Anna Zaks Engine.FunctionSummaries->markReachedMaxBlockCount(CalleeSF->getDecl()); 10623bbd8cd831788c506f2980293eb3c7e1b3ca2501Anna Zaks 10635903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // Re-run the call evaluation without inlining it, by storing the 10645903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // no-inlining policy in the state and enqueuing the new work item on 10655903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // the list. Replay should almost never fail. Use the stats to catch it 10665903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks // if it does. 1067b47dbcbc12430fdf3e5a5b9f59cdec5480e89e75Anna Zaks if ((!AMgr.NoRetryExhausted && replayWithoutInlining(pred, CalleeLC))) 1068253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks return; 1069253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks NumMaxBlockCountReachedInInlined++; 10705903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } else 1071749bbe6f5f23676244f12a0d41511c8e73516febAnna Zaks NumMaxBlockCountReached++; 1072253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks 1073253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks // Make sink nodes as exhausted(for stats) only if retry failed. 1074253955ca25c7e7049963b5db613c0cd15d66e4f8Anna Zaks Engine.blocksExhausted.push_back(std::make_pair(L, Sink)); 107527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 1076e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek} 1077e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 1078e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1079e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek// Branch processing. 1080e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1081e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek 10828bef8238181a30e52dea380789a7e2d760eac532Ted KremenekProgramStateRef ExprEngine::MarkBranch(ProgramStateRef state, 10835eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const Stmt *Terminator, 10845eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 10855eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek bool branchTaken) { 10861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek switch (Terminator->getStmtClass()) { 108805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek default: 1089a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek return state; 10901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::BinaryOperatorClass: { // '&&' and '||' 10921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator* B = cast<BinaryOperator>(Terminator); 109405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek BinaryOperator::Opcode Op = B->getOpcode(); 10951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10962de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert (Op == BO_LAnd || Op == BO_LOr); 10971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For &&, if we take the true branch, then the value of the whole 109905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 110005a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // 110105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ||, if we take the false branch, then the value of the whole 110205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // expression is that of the RHS expression. 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11049c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = (Op == BO_LAnd && branchTaken) || 11052de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall (Op == BO_LOr && !branchTaken) 110603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ? B->getRHS() : B->getLHS(); 11071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11085eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(B, LCtx, UndefinedVal(Ex)); 110905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 111205a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ConditionalOperatorClass: { // ?: 111356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator* C 111456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall = cast<AbstractConditionalOperator>(Terminator); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 111605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // For ?, if branchTaken == true then the value is either the LHS or 111705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek // the condition itself. (GNU extension). 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11199c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex; 11201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek if (branchTaken) 112256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getTrueExpr(); 112305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek else 112456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Ex = C->getFalseExpr(); 11251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11265eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 112705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 11281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112905a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek case Stmt::ChooseExprClass: { // ?: 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11319c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ChooseExpr *C = cast<ChooseExpr>(Terminator); 11321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Ex = branchTaken ? C->getLHS() : C->getRHS(); 11345eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->BindExpr(C, LCtx, UndefinedVal(Ex)); 113505a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 113605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 113705a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek} 113805a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek 11396ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// RecoverCastedSymbol - A helper function for ProcessBranch that is used 11406ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// to try to recover some path-sensitivity for casts of symbolic 11416ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// integers that promote their values (which are currently not tracked well). 11426ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek/// This function returns the SVal bound to Condition->IgnoreCasts if all the 11436ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek// cast(s) did was sign-extend the original value. 1144294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekstatic SVal RecoverCastedSymbol(ProgramStateManager& StateMgr, 11458bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, 1146294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek const Stmt *Condition, 11475eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx, 1148294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek ASTContext &Ctx) { 11496ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 115003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const Expr *Ex = dyn_cast<Expr>(Condition); 11516ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!Ex) 11526ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11536ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11546ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t bits = 0; 11556ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bool bitsInit = false; 11561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu while (const CastExpr *CE = dyn_cast<CastExpr>(Ex)) { 11586ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = CE->getType(); 11596ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11606ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!T->isIntegerType()) 11616ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11636ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek uint64_t newBits = Ctx.getTypeSize(T); 11646ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || newBits < bits) { 11656ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bitsInit = true; 11666ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek bits = newBits; 11676ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11696ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek Ex = CE->getSubExpr(); 11706ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek } 11716ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11726ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek // We reached a non-cast. Is it a symbolic value? 11736ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek QualType T = Ex->getType(); 11746ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11756ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek if (!bitsInit || !T->isIntegerType() || Ctx.getTypeSize(T) > bits) 11766ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek return UnknownVal(); 11771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek return state->getSVal(Ex, LCtx); 11796ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek} 11806ae8a3600656c478d27f25639bed765f4fe71732Ted Kremenek 11819c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::processBranch(const Stmt *Condition, const Stmt *Term, 1182a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext& BldCtx, 1183ad62deeb70e97da6bd514dd390ea1ce6af6ad81dAnna Zaks ExplodedNode *Pred, 11841aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks ExplodedNodeSet &Dst, 1185a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstT, 1186a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *DstF) { 1187f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = &BldCtx; 1188f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks 1189b2331834a0515c80862ee51325c758a053829f15Ted Kremenek // Check for NULL conditions; e.g. "for(;;)" 11901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Condition) { 11911aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks BranchNodeBuilder NullCondBldr(Pred, Dst, BldCtx, DstT, DstF); 1192a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NullCondBldr.markInfeasible(false); 11934e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks NullCondBldr.generateNode(Pred->getState(), true, Pred); 1194b2331834a0515c80862ee51325c758a053829f15Ted Kremenek return; 1195b2331834a0515c80862ee51325c758a053829f15Ted Kremenek } 11961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119721028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek PrettyStackTraceLoc CrashInfo(getContext().getSourceManager(), 119821028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek Condition->getLocStart(), 119921028dd8850c64a414f7a82dfddcc291351203d6Ted Kremenek "Error evaluating branch"); 12000fb0bc4067d6c9d7c0e655300ef309b05d3adfc9Ted Kremenek 1201f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks ExplodedNodeSet CheckersOutSet; 1202f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks getCheckerManager().runCheckersForBranchCondition(Condition, CheckersOutSet, 12034e82d3cf6fd4c907265e3fa3aac0a835c35dc759Anna Zaks Pred, *this); 12048ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks // We generated only sinks. 1205f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks if (CheckersOutSet.empty()) 12068ff5c41f2bde7ebbe568b4c15e59f14b8befae66Anna Zaks return; 12071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1208f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks BranchNodeBuilder builder(CheckersOutSet, Dst, BldCtx, DstT, DstF); 1209f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks for (NodeBuilder::iterator I = CheckersOutSet.begin(), 1210f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks E = CheckersOutSet.end(); E != I; ++I) { 1211cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks ExplodedNode *PredI = *I; 1212cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1213cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (PredI->isSink()) 1214cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 1215cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 12168bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef PrevState = Pred->getState(); 12175eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal X = PrevState->getSVal(Condition, Pred->getLocationContext()); 1218cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1219cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (X.isUnknownOrUndef()) { 1220cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Give it a chance to recover from unknown. 1221cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (const Expr *Ex = dyn_cast<Expr>(Condition)) { 1222cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (Ex->getType()->isIntegerType()) { 1223cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Try to recover some path-sensitivity. Right now casts of symbolic 1224cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // integers that promote their values are currently not tracked well. 1225cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // If 'Condition' is such an expression, try and recover the 1226cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // underlying value and use that instead. 1227cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks SVal recovered = RecoverCastedSymbol(getStateManager(), 1228cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks PrevState, Condition, 12295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Pred->getLocationContext(), 1230cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks getContext()); 1231cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks 1232cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (!recovered.isUnknown()) { 1233cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks X = recovered; 1234cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12350835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 1236b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 12370835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu } 12385eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = PredI->getLocationContext(); 12405eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek 12410835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu // If the condition is still unknown, give up. 124273c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (X.isUnknownOrUndef()) { 12435eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, true), 12445eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 12455eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(PrevState, Term, LCtx, false), 12465eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1247cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks continue; 12481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 12491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1250cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks DefinedSVal V = cast<DefinedSVal>(X); 12510835e4cccfef3ea5346962722b79484f6b3ca602Zhongxing Xu 1252cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the true branch. 1253cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(true)) { 12548bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, true)) 12555eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, true), 12565eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek true, PredI); 1257cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1258cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(true); 1259cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 12601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1261cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks // Process the false branch. 1262cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks if (builder.isFeasible(false)) { 12638bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef state = PrevState->assume(V, false)) 12645eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek builder.generateNode(MarkBranch(state, Term, LCtx, false), 12655eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek false, PredI); 1266cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks else 1267cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks builder.markInfeasible(false); 1268cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1269cd656cab3fa3dd4b0c974c6ae1c0e60880b18c22Anna Zaks } 1270f236b6503a4dbc44c1fccb8756bd57c9d0efdf05Anna Zaks currentBuilderContext = 0; 1271f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek} 1272f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1273e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek/// processIndirectGoto - Called by CoreEngine. Used to generate successor 1274754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek/// nodes by processing the 'effects' of a computed goto jump. 1275ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattnervoid ExprEngine::processIndirectGoto(IndirectGotoNodeBuilder &builder) { 1276754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12778bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 12785eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(builder.getTarget(), builder.getLocationContext()); 12791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1280754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Three possibilities: 1281754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 1282754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (1) We know the computed label. 12834a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek // (2) The label is NULL (or some other constant), or Undefined. 1284754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // (3) We have no clue about the label. Dispatch to all targets. 1285754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // 12861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1287d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef IndirectGotoNodeBuilder::iterator iterator; 1288754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 12891c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::GotoLabel>(V)) { 1290ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *L = cast<loc::GotoLabel>(V).getLabel(); 12911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1292ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner for (iterator I = builder.begin(), E = builder.end(); I != E; ++I) { 129324f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek if (I.getLabel() == L) { 1294a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1295754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1296754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1297754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 12981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1299b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("No block with label."); 1300754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 1301754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 13021c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<loc::ConcreteInt>(V) || isa<UndefinedVal>(V)) { 1303754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // Dispatch to the first target and mark it as a sink. 13042055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateNode(builder.begin(), state, true); 13052055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // FIXME: add checker visit. 13062055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu // UndefBranches.insert(N); 1307754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek return; 1308754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek } 13091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1310754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek // This is really a catch-all. We don't support symbolics yet. 1311b3cfd58c9b13325d994e5f9b5065e6a22d91911dTed Kremenek // FIXME: Implement dispatch for symbolic pointers. 13121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1313754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek for (iterator I=builder.begin(), E=builder.end(); I != E; ++I) 1314a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek builder.generateNode(I, state); 1315754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek} 1316f233d48cfc513b045e2c2cfca5c175220fbd0a82Ted Kremenek 1317d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessEndPath - Called by CoreEngine. Used to generate end-of-path 131873099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek/// nodes when the control reaches the end of a function. 1319af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid ExprEngine::processEndOfFunction(NodeBuilderContext& BC) { 1320af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks StateMgr.EndPath(BC.Pred->getState()); 1321af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks ExplodedNodeSet Dst; 1322af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks getCheckerManager().runCheckersForEndPath(BC, Dst, *this); 13234d2ae4a70336dc2aa11389b34946be152bb454c9Anna Zaks Engine.enqueueEndOfFunction(Dst); 132473099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek} 132573099bfea9f5d4ec05265170bbefec3d76fb6b5eTed Kremenek 1326d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// ProcessSwitch - Called by CoreEngine. Used to generate successor 1327daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek/// nodes by processing the 'effects' of a switch statement. 1328e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenekvoid ExprEngine::processSwitch(SwitchNodeBuilder& builder) { 1329d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis typedef SwitchNodeBuilder::iterator iterator; 13308bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = builder.getState(); 13319c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *CondE = builder.getCondition(); 13325eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal CondV_untested = state->getSVal(CondE, builder.getLocationContext()); 1333daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 13345b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (CondV_untested.isUndef()) { 13352055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //ExplodedNode* N = builder.generateDefaultCaseNode(state, true); 1336b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek // FIXME: add checker 13372055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu //UndefBranches.insert(N); 13382055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu 1339daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1340daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13415b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek DefinedOrUnknownSVal CondV = cast<DefinedOrUnknownSVal>(CondV_untested); 1342692416c214a3b234236dedcf875735a9cc29e90bTed Kremenek 13438bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef DefaultSt = state; 134434feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek 134534feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek iterator I = builder.begin(), EI = builder.end(); 134634feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool defaultIsFeasible = I == EI; 13471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek for ( ; I != EI; ++I) { 1349e71f3d587844110d836c82250830b27b1651afdbTed Kremenek // Successor may be pruned out during CFG construction. 1350e71f3d587844110d836c82250830b27b1651afdbTed Kremenek if (!I.getBlock()) 1351e71f3d587844110d836c82250830b27b1651afdbTed Kremenek continue; 1352e71f3d587844110d836c82250830b27b1651afdbTed Kremenek 13539c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = I.getCase(); 135472afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek 135572afb3739da0da02158242ae41a50cfe0bea78b4Ted Kremenek // Evaluate the LHS of the case value. 135685df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V1 = Case->getLHS()->EvaluateKnownConstInt(getContext()); 135785df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert(V1.getBitWidth() == getContext().getTypeSize(CondE->getType())); 13581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1359daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Get the RHS of the case, if it exists. 136085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith llvm::APSInt V2; 136185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (const Expr *E = Case->getRHS()) 136285df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith V2 = E->EvaluateKnownConstInt(getContext()); 136314a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek else 136414a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek V2 = V1; 13651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1366daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // FIXME: Eventually we should replace the logic below with a range 1367daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // comparison, rather than concretize the values within the range. 1368aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // This should be easy once we have "ranges" for NonLVals. 13691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137014a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek do { 137185df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith nonloc::ConcreteInt CaseVal(getBasicVals().getValue(V1)); 13729c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek DefinedOrUnknownSVal Res = svalBuilder.evalEQ(DefaultSt ? DefaultSt : state, 137348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek CondV, CaseVal); 1374b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 13751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Now "assume" that the case matches. 13768bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = state->assume(Res, true)) { 1377a591bc04d21fa62ebffcb2c7814d738ca8f5e2f9Ted Kremenek builder.generateCaseStmtNode(I, stateNew); 13781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1379daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // If CondV evaluates to a constant, then we know that this 1380daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // is the *only* case that we can take, so stop evaluating the 1381daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // others. 13821c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu if (isa<nonloc::ConcreteInt>(CondV)) 1383daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return; 1384daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 13851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1386daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // Now "assume" that the case doesn't match. Add this state 1387daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek // to the default state (if it is feasible). 138848569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek if (DefaultSt) { 13898bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef stateNew = DefaultSt->assume(Res, false)) { 139048569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = true; 139148569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = stateNew; 139248569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 139348569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek else { 139448569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek defaultIsFeasible = false; 139548569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek DefaultSt = NULL; 139648569f9562740ac1f4b175cb17ce3d49035402c4Ted Kremenek } 13975014ab113eb211b8320ae30b173d7020352663c6Ted Kremenek } 1398b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 139914a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek // Concretize the next value in the range. 140085df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith if (V1 == V2) 140114a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek break; 14021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140385df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith ++V1; 140485df96c1f04867e26ba069aa0cc6a4cd6a01292eRichard Smith assert (V1 <= V2); 14051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140614a1140c9f4e20b12a54db8745b74699b9872cd2Ted Kremenek } while (true); 1407daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 14081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14094d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (!defaultIsFeasible) 14104d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14114d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14124d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // If we have switch(enum value), the default branch is not 14134d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible if all of the enum constants not covered by 'case:' statements 14144d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // are not feasible values for the switch condition. 14154d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // 14164d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // Note that this isn't as accurate as it could be. Even if there isn't 14174d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // a case for a particular enum value as long as that enum value isn't 14184d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek // feasible then it shouldn't be considered for making 'default:' reachable. 14194d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *SS = builder.getSwitch(); 14204d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const Expr *CondExpr = SS->getCond()->IgnoreParenImpCasts(); 14214d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (CondExpr->getType()->getAs<EnumType>()) { 14224d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek if (SS->isAllEnumCasesCovered()) 14234d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return; 14244d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 14254d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 14264d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek builder.generateDefaultCaseNode(DefaultSt); 1427daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek} 1428daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 1429e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1430ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek// Transfer functions: Loads and stores. 1431e695e1cd7d8a579455e8969be36cbaf10a316a64Ted Kremenek//===----------------------------------------------------------------------===// 1432d27f8169f4b68337a489547a41ac45bf7a5d1ddfTed Kremenek 1433d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::VisitCommonDeclRefExpr(const Expr *Ex, const NamedDecl *D, 1434d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNode *Pred, 1435d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ExplodedNodeSet &Dst) { 1436aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1437ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14388bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 14395eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 14406d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14419c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 1442892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(Ex->isLValue()); 1443d17da2b99f323fa91b01e1dd119cc32e0ee8197dTed Kremenek SVal V = state->getLValue(VD, Pred->getLocationContext()); 1444a7581731b1453b51b26154d2409d42a5b6395079Zhongxing Xu 1445892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // For references, the 'lvalue' is the pointer address stored in the 1446892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek // reference region. 1447892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (VD->getType()->isReferenceType()) { 1448892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (const MemRegion *R = V.getAsRegion()) 1449892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = state->getSVal(R); 1450892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek else 1451892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek V = UnknownVal(); 1452852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 14536d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu 14545eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1455ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1456852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1457892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14589c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { 1459892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek assert(!Ex->isLValue()); 1460c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.makeIntVal(ED->getInitVal()); 14615eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V)); 14626d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 1463892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek } 14649c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 1465c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal V = svalBuilder.getFunctionPointer(FD); 14665eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, V), false, 0, 1467ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 14686d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu return; 14691b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 14705aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek if (isa<FieldDecl>(D)) { 14715aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek // FIXME: Compute lvalue of fields. 14725aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, UnknownVal()), 14735aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek false, 0, ProgramPoint::PostLValueKind); 14745aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek return; 14755aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek } 14765aac0b6ae95f137b1783f3e6227241fb457b8f8bTed Kremenek 14776d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu assert (false && 14786d69b5d82281992e981caa9bc038e3f6cac6594aZhongxing Xu "ValueDecl support for this ValueDecl not implemented."); 14793271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek} 14803271f8d315712885ac87747369bb1d9f4b1ea81fTed Kremenek 1481540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek/// VisitArraySubscriptExpr - Transfer function for array accesses 14829c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A, 14839c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 14849c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet &Dst){ 14851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Base = A->getBase()->IgnoreParens(); 14879c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Idx = A->getIdx()->IgnoreParens(); 1488892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 14891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14908f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ExplodedNodeSet checkerPreStmt; 14918f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this); 14928f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek 1493aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currentBuilderContext); 1494ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 14958f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(), 14968f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek ei = checkerPreStmt.end(); it != ei; ++it) { 14975eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*it)->getLocationContext(); 14988bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = (*it)->getState(); 14995eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getLValue(A->getType(), 15005eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Idx, LCtx), 15015eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->getSVal(Base, LCtx)); 15028f3407ef22bc7efe6ca4169381e09d0d657ec192Ted Kremenek assert(A->isLValue()); 15035eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), 1504ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, 0, ProgramPoint::PostLValueKind); 15051b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek } 1506540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek} 1507540cbe2b60294fe7b926c26b4f1840f544fe3011Ted Kremenek 1508469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek/// VisitMemberExpr - Transfer function for member expressions. 15099c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred, 15106889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet &TopDst) { 15111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15126889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks StmtNodeBuilder Bldr(Pred, TopDst, *currentBuilderContext); 15136889679d72859960e0fc8d1080487f63c4df1e0aAnna Zaks ExplodedNodeSet Dst; 15145bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek Decl *member = M->getMemberDecl(); 15155bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek if (VarDecl *VD = dyn_cast<VarDecl>(member)) { 15165bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek assert(M->isLValue()); 1517ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 15185bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek VisitCommonDeclRefExpr(M, VD, Pred, Dst); 1519ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 15205bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek return; 15215bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek } 15225bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek 15235bd04952d4ae7ca894f583583208f0cec4735a90Ted Kremenek FieldDecl *field = dyn_cast<FieldDecl>(member); 1524892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek if (!field) // FIXME: skipping member expressions for non-fields 152586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return; 152686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 1527e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek Expr *baseExpr = M->getBase()->IgnoreParens(); 15288bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 15295eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = Pred->getLocationContext(); 15305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal baseExprVal = state->getSVal(baseExpr, Pred->getLocationContext()); 1531e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (isa<nonloc::LazyCompoundVal>(baseExprVal) || 1532e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::CompoundVal>(baseExprVal) || 1533e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: This can originate by conjuring a symbol for an unknown 1534e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // temporary struct object, see test/Analysis/fields.c: 1535e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // (p = getit()).x 1536e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek isa<nonloc::SymbolVal>(baseExprVal)) { 15375eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, UnknownVal())); 1538e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek return; 1539e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek } 1540892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek 1541e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // FIXME: Should we insert some assumption logic in here to determine 1542e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // if "Base" is a valid piece of memory? Before we put this assumption 1543e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // later when using FieldOffset lvals (which we no longer have). 1544d9bc33efa195114d6f2a365c26e5b8dba4e1cc38Ted Kremenek 1545e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek // For all other cases, compute an lvalue. 1546e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek SVal L = state->getLValue(field, baseExprVal); 1547e3939d7446959afb6b650fe08e952d0f64ab6794Ted Kremenek if (M->isLValue()) 15485eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek Bldr.generateNode(M, Pred, state->BindExpr(M, LCtx, L), false, 0, 1549ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ProgramPoint::PostLValueKind); 1550ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks else { 1551ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.takeNodes(Pred); 1552bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoad(Dst, M, M, Pred, state, L); 1553ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.addNodes(Dst); 1554ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks } 1555469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek} 1556469ecbded3616416ef938ed94a67f86149faf226Ted Kremenek 15579c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalBind - Handle the semantics of binding a value to a specific location. 15589c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// This method is used by evalStore and (soon) VisitDeclStmt, and others. 15599c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, 156093bd5ca766c4d7906878f4ffe76ce1b2080e540bJordy Rose ExplodedNode *Pred, 15613d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks SVal location, SVal Val, bool atDeclInit) { 1562b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1563b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek // Do a previsit of the bind. 1564fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose ExplodedNodeSet CheckedSet; 1565fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose getCheckerManager().runCheckersForBind(CheckedSet, Pred, location, Val, 15663d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks StoreE, *this, 15673d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramPoint::PostStmtKind); 1568b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 15696b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks ExplodedNodeSet TmpDst; 1570aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(CheckedSet, TmpDst, *currentBuilderContext); 15716b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks 15723d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const LocationContext *LC = Pred->getLocationContext(); 1573b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end(); 1574b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek I!=E; ++I) { 15753d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ExplodedNode *PredI = *I; 15763d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks ProgramStateRef state = PredI->getState(); 1577a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1578b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek if (atDeclInit) { 1579b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek const VarRegion *VR = 1580b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek cast<VarRegion>(cast<loc::MemRegionVal>(location).getRegion()); 1581f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek 1582fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindDecl(VR, Val); 1583fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose } else { 1584fe27971d54d26997149d6b84057f04ff398d1d5dJordy Rose state = state->bindLoc(location, Val); 1585f6f56d4fc8ebce17e7b83eb2c35f57a055c22283Ted Kremenek } 15861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15873d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const MemRegion *LocReg = 0; 15883d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks if (loc::MemRegionVal *LocRegVal = dyn_cast<loc::MemRegionVal>(&location)) 15893d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks LocReg = LocRegVal->getRegion(); 15903d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks 15913d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks const ProgramPoint L = PostStore(StoreE, LC, LocReg, 0); 15923d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks Bldr.generateNode(L, PredI, state, false); 1593b107c4b7efb907d75620cd3c17f82fe27dc5b745Ted Kremenek } 1594ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks 15956b6152ba96c164a292cc0b8d8b1d4cecbec27a60Anna Zaks Dst.insert(TmpDst); 1596a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek} 1597a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 15989c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek/// evalStore - Handle the semantics of a store via an assignment. 1599a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Dst The node set to store generated state nodes 1600e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param AssignE The assignment expression if the store happens in an 1601e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// assignment. 1602e8a4d7d0064b357a30fe7ee4f2ddc02f9ffc0357Zhongxing Xu/// @param LocatioinE The location expression that is stored to. 1603a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param state The current simulation state 1604a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param location The location to store the value 1605a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek/// @param Val The value to be stored 16069c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, 16079c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LocationE, 16089c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred, 16098bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state, SVal location, SVal Val, 1610ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag) { 161114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Proceed with the store. We use AssignE as the anchor for the PostStore 161214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // ProgramPoint if it is non-NULL, and LocationE otherwise. 161314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const Expr *StoreE = AssignE ? AssignE : LocationE; 161414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 161514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis if (isa<loc::ObjCPropRef>(location)) { 1616b673a41c92aa276f2e37164d0747be1cfb0c402bTed Kremenek assert(false); 161714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 161814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 16191b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Evaluate the location (checks for bad dereferences). 1620b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1621bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, AssignE, LocationE, Pred, state, location, tag, false); 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1623b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16241b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1625b0533965f1b4db020692e3b23ca7b3bc15bf5897Ted Kremenek 162673c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 162773c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1628a8538d902fce9cfec20f39b34492268b51643819Ted Kremenek 1629b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) 16303d7c44e01d568e5d5c0fac9c6ccb3f080157ba19Anna Zaks evalBind(Dst, StoreE, *NI, location, Val, false); 16311b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 16321b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1633bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoad(ExplodedNodeSet &Dst, 1634bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1635bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1636bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1637bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1638bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1639bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1640bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) 1641bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek{ 1642cca8ab155e8c20b98ba2d90eb2b1c228895e06fdZhanyong Wan assert(!isa<NonLoc>(location) && "location cannot be a NonLoc."); 1643bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(!isa<loc::ObjCPropRef>(location)); 164414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 1645852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Are we loading from a region? This actually results in two loads; one 1646852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // to fetch the address of the referenced value and one to fetch the 1647852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // referenced value. 16489697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek if (const TypedValueRegion *TR = 16499697934650354bed2e509d8e7e44f21a1fb00f76Ted Kremenek dyn_cast_or_null<TypedValueRegion>(location.getAsRegion())) { 1650b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1651018220c343c103b7dfaa117a7a474c7a7fd6d068Zhongxing Xu QualType ValTy = TR->getValueType(); 1652852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek if (const ReferenceType *RT = ValTy->getAs<ReferenceType>()) { 1653ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag 1654ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek loadReferenceTag("ExprEngine : Load Reference"); 1655852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek ExplodedNodeSet Tmp; 1656bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Tmp, NodeEx, BoundEx, Pred, state, 1657bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location, &loadReferenceTag, 1658852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek getContext().getPointerType(RT->getPointeeType())); 1659852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1660852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek // Perform the load from the referenced value. 1661852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek for (ExplodedNodeSet::iterator I=Tmp.begin(), E=Tmp.end() ; I!=E; ++I) { 1662db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*I)->getState(); 1663bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek location = state->getSVal(BoundEx, (*I)->getLocationContext()); 1664bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, *I, state, location, tag, LoadTy); 1665b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek } 1666852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return; 1667852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1668852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1669b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1670bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLoadCommon(Dst, NodeEx, BoundEx, Pred, state, location, tag, LoadTy); 1671852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek} 1672852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 1673bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLoadCommon(ExplodedNodeSet &Dst, 1674bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *NodeEx, 1675bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Expr *BoundEx, 1676bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1677bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1678bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1679bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1680bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek QualType LoadTy) { 1681bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(NodeEx); 1682bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek assert(BoundEx); 16831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Evaluate the location (checks for bad dereferences). 1684b4b817d704287836b52b34369009e682f208aa2bTed Kremenek ExplodedNodeSet Tmp; 1685bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek evalLocation(Tmp, NodeEx, BoundEx, Pred, state, location, tag, true); 1686b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (Tmp.empty()) 16871b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek return; 1688b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 1689aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Tmp, Dst, *currentBuilderContext); 169073c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis if (location.isUndef()) 169173c498a08f4968b6987d1453c7b77929dcc6d5f7Argyrios Kyrtzidis return; 1692b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 16931b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek // Proceed with the load. 1694b4b817d704287836b52b34369009e682f208aa2bTed Kremenek for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI!=NE; ++NI) { 1695db5e8cd095d1ffdd18f5620ad2348b5f386bebe3Anna Zaks state = (*NI)->getState(); 16965eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek const LocationContext *LCtx = (*NI)->getLocationContext(); 169796ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek 1698b4b817d704287836b52b34369009e682f208aa2bTed Kremenek if (location.isUnknown()) { 1699b4b817d704287836b52b34369009e682f208aa2bTed Kremenek // This is important. We must nuke the old binding. 1700bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1701bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->BindExpr(BoundEx, LCtx, UnknownVal()), 1702bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek false, tag, 1703bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramPoint::PostLoadKind); 1704b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1705b4b817d704287836b52b34369009e682f208aa2bTed Kremenek else { 170696ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek if (LoadTy.isNull()) 1707bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek LoadTy = BoundEx->getType(); 170896ebad66c451d79c9f57b1edb31efaeeb23b9a01Ted Kremenek SVal V = state->getSVal(cast<Loc>(location), LoadTy); 1709bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, *NI, 1710bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek state->bindExprAndLocation(BoundEx, LCtx, location, V), 1711ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks false, tag, ProgramPoint::PostLoadKind); 1712b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1713d5b499d43c3526fae7f9ebb6e2d50e79d3496cedZhongxing Xu } 17141b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek} 17151b8bd4d71c2098126041b4de4267175a82f0103cTed Kremenek 1716bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenekvoid ExprEngine::evalLocation(ExplodedNodeSet &Dst, 1717bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *NodeEx, 1718bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const Stmt *BoundEx, 1719bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ExplodedNode *Pred, 1720bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek ProgramStateRef state, 1721bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek SVal location, 1722bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek const ProgramPointTag *tag, 1723bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek bool isLoad) { 1724aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder BldrTop(Pred, Dst, *currentBuilderContext); 172500b1ad2d56f3e39f95c3f61bf511a531ab6a4fa5Zhongxing Xu // Early checks for performance reason. 1726769ce3e93ad35bd9ac28e4d8b8f035ae4fd9a5b5Argyrios Kyrtzidis if (location.isUnknown()) { 1727b4b817d704287836b52b34369009e682f208aa2bTed Kremenek return; 1728b4b817d704287836b52b34369009e682f208aa2bTed Kremenek } 1729b9bbd592c7ea72ada8d982e40a729beb9b53371eTed Kremenek 17309c0d6891b3ec4b0d20b8a295946c0dc5426d147cArgyrios Kyrtzidis ExplodedNodeSet Src; 1731ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.takeNodes(Pred); 1732aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Pred, Src, *currentBuilderContext); 1733ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks if (Pred->getState() != state) { 1734eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // Associate this new state with an ExplodedNode. 1735eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // FIXME: If I pass null tag, the graph is incorrect, e.g for 1736eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // int *p; 1737eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // p = 0; 1738eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // *p = 0xDEADBEEF; 1739eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "p = 0" is not noted as "Null pointer value stored to 'p'" but 1740eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // instead "int *p" is noted as 1741eb48bd1dd4168ab206a330bf523659170291a6a0Argyrios Kyrtzidis // "Variable 'p' initialized to a null pointer value" 1742ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 1743ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek // FIXME: why is 'tag' not used instead of etag? 1744ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek static SimpleProgramPointTag etag("ExprEngine: Location"); 1745bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek Bldr.generateNode(NodeEx, Pred, state, false, &etag); 17460296c22557b3735e2ffeff690eb46fb0e9152bccTed Kremenek } 1747ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks ExplodedNodeSet Tmp; 1748bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek getCheckerManager().runCheckersForLocation(Tmp, Src, location, isLoad, 1749bd613137499b1d4c3b63dccd0aa21f6add243f4fTed Kremenek NodeEx, BoundEx, *this); 1750ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks BldrTop.addNodes(Tmp); 1751ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek} 1752ec96a2d52d16e150baaf629cd35e3fabff5d8915Ted Kremenek 17536c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenekstd::pair<const ProgramPointTag *, const ProgramPointTag*> 17546c7511db998817e64f2e124013e7d7c9a430c580Ted KremenekExprEngine::getEagerlyAssumeTags() { 17556c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek static SimpleProgramPointTag 17566c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeTrue("ExprEngine : Eagerly Assume True"), 17576c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek EagerlyAssumeFalse("ExprEngine : Eagerly Assume False"); 17586c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek return std::make_pair(&EagerlyAssumeTrue, &EagerlyAssumeFalse); 17596c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek} 17606c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 1761d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::evalEagerlyAssume(ExplodedNodeSet &Dst, ExplodedNodeSet &Src, 17626800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const Expr *Ex) { 1763aa0aeb1cbe117db68d35700cb3a34aace0f99b99Anna Zaks StmtNodeBuilder Bldr(Src, Dst, *currentBuilderContext); 176486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek 1765031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu for (ExplodedNodeSet::iterator I=Src.begin(), E=Src.end(); I!=E; ++I) { 1766031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedNode *Pred = *I; 1767b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // Test if the previous node was as the same expression. This can happen 1768b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // when the expression fails to evaluate to anything meaningful and 1769b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek // (as an optimization) we don't generate a node. 17701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ProgramPoint P = Pred->getLocation(); 1771b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek if (!isa<PostStmt>(P) || cast<PostStmt>(P).getStmt() != Ex) { 1772b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek continue; 17731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1774b293902c5cfa18365ffb0e00763849c9808a2ad1Ted Kremenek 17758bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = Pred->getState(); 17765eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek SVal V = state->getSVal(Ex, Pred->getLocationContext()); 17775344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks nonloc::SymbolVal *SEV = dyn_cast<nonloc::SymbolVal>(&V); 17785344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks if (SEV && SEV->isExpression()) { 17796c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek const std::pair<const ProgramPointTag *, const ProgramPointTag*> &tags = 17806c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek getEagerlyAssumeTags(); 17816c7511db998817e64f2e124013e7d7c9a430c580Ted Kremenek 178248af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // First assume that the condition is true. 17838bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateTrue = state->assume(*SEV, true)) { 178486b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(1U, Ex->getType()); 17855eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateTrue = StateTrue->BindExpr(Ex, Pred->getLocationContext(), Val); 1786ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateTrue, false, tags.first); 178748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178948af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek // Next, assume that the condition is false. 17908bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek if (ProgramStateRef StateFalse = state->assume(*SEV, false)) { 179186b39f20d5091ca3fdcbeb4a22766aaffdf6ac35Ted Kremenek SVal Val = svalBuilder.makeIntVal(0U, Ex->getType()); 17925eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek StateFalse = StateFalse->BindExpr(Ex, Pred->getLocationContext(), Val); 1793ebae6d0209e1ec3d5ea14f9e63bd0d740218ed14Anna Zaks Bldr.generateNode(Ex, Pred, StateFalse, false, tags.second); 179448af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179548af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179648af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek } 179748af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek} 179848af2a9c1ed3259512f2d1431720add1fbe8fb5fTed Kremenek 17999c378f705405d37f49795d5e915989de774fe11fTed Kremenekvoid ExprEngine::VisitAsmStmt(const AsmStmt *A, ExplodedNode *Pred, 1800a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ExplodedNodeSet &Dst) { 1801a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen StmtNodeBuilder Bldr(Pred, Dst, *currentBuilderContext); 1802a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // We have processed both the inputs and the outputs. All of the outputs 1803a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // should evaluate to Locs. Nuke all of their values. 18041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1805a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // FIXME: Some day in the future it would be nice to allow a "plug-in" 1806a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // which interprets the inline asm and stores proper results in the 1807a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen // outputs. 18081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1809a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen ProgramStateRef state = Pred->getState(); 18101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1811a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen for (AsmStmt::const_outputs_iterator OI = A->begin_outputs(), 1812a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen OE = A->end_outputs(); OI != OE; ++OI) { 1813a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen SVal X = state->getSVal(*OI, Pred->getLocationContext()); 1814a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen assert (!isa<NonLoc>(X)); // Should be an Lval, or unknown, undef. 18151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1816a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen if (isa<Loc>(X)) 1817a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen state = state->bindLoc(cast<Loc>(X), UnknownVal()); 1818ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek } 18191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1820a81d3d434e6581ff354eaf5b2a3c25c75771a792Erik Verbruggen Bldr.generateNode(A, Pred, state); 1821ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek} 1822ef44bfb9d0f15ba0391f8346c9f01355fb450a09Ted Kremenek 1823094bef56a7900f13bb777f9a352704104b1458e7Ted Kremenek//===----------------------------------------------------------------------===// 1824e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek// Visualization. 1825ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek//===----------------------------------------------------------------------===// 1826ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek 1827aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#ifndef NDEBUG 1828d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisstatic ExprEngine* GraphPrintCheckerState; 1829e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenekstatic SourceManager* GraphPrintSourceManager; 18303b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek 1831aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremeneknamespace llvm { 1832aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenektemplate<> 183347491f8b7adf9d42a404d44c073e8a5308fa6cfcDouglas Gregorstruct DOTGraphTraits<ExplodedNode*> : 1834aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek public DefaultDOTGraphTraits { 1835006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1836006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 1837006b0eb3e11162d8c06372db813ac9f71a7a16e8Tobias Grosser 1838d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis // FIXME: Since we do not cache error nodes in ExprEngine now, this does not 1839ec9227fea66c3439991fc84b0d33b0a8b4b8875eZhongxing Xu // work. 18409c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeAttributes(const ExplodedNode *N, void*) { 18411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 184210f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 184310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to tell if the node is 184410f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // an error node. 1845a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N) || 18469dca062461a6244cf0f733346657fa3eee853f9bTed Kremenek GraphPrintCheckerState->isExplicitNullDeref(N) || 18474a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefDeref(N) || 18484a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefStore(N) || 18494a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek GraphPrintCheckerState->isUndefControlFlow(N) || 18505e03fcb5420c33207433dd6f800588e256dd9bdbTed Kremenek GraphPrintCheckerState->isUndefResult(N) || 18512ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isBadCall(N) || 18522ded35a576e3899553ea0ccfcbf5cbdb3d8cf664Ted Kremenek GraphPrintCheckerState->isUndefArg(N)) 1853a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return "color=\"red\",style=\"filled\""; 18541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18558cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek if (GraphPrintCheckerState->isNoReturnCall(N)) 18568cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek return "color=\"blue\",style=\"filled\""; 18572055effed54d614b51e3501a174c9b1fe92e4de4Zhongxing Xu#endif 1858a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek return ""; 1859a3fadfcce5911742801a302cac82d4fe54d5c682Ted Kremenek } 18601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18619c378f705405d37f49795d5e915989de774fe11fTed Kremenek static std::string getNodeLabel(const ExplodedNode *N, void*){ 18621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 186353ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek std::string sbuf; 186453ba0b636194dbeaa65a6f85316c9397a0c5298bTed Kremenek llvm::raw_string_ostream Out(sbuf); 1865803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek 1866803c9edd06e8f936821525d36b1d8cc131e37d44Ted Kremenek // Program Location. 1867aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek ProgramPoint Loc = N->getLocation(); 18681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1869aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek switch (Loc.getKind()) { 18700b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::BlockEntranceKind: { 18711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "Block Entrance: B" 1872aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << cast<BlockEntrance>(Loc).getBlock()->getBlockID(); 18730b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const NamedDecl *ND = 18740b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks dyn_cast<NamedDecl>(Loc.getLocationContext()->getDecl())) { 18750b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << " ("; 18760b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks ND->printName(Out); 18770b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << ")"; 18780b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 1879aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18800b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks } 18811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1882aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek case ProgramPoint::BlockExitKind: 1883aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek assert (false); 1884aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek break; 18851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1886102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor case ProgramPoint::CallEnterKind: 1887102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor Out << "CallEnter"; 1888102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1889102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 18900b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitBeginKind: 18910b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitBegin"; 18920b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 18930b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 18940b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::CallExitEndKind: 18950b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "CallExitEnd"; 18960b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 18970b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 18980b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PostStmtPurgeDeadSymbolsKind: 18990b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PostStmtPurgeDeadSymbols"; 19000b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks break; 19010b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks 19020b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks case ProgramPoint::PreStmtPurgeDeadSymbolsKind: 19030b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks Out << "PreStmtPurgeDeadSymbols"; 1904102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor break; 1905102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 19065903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks case ProgramPoint::EpsilonKind: 19075903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks Out << "Epsilon Point"; 19085903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks break; 19095903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1910aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek default: { 19115f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (StmtPoint *L = dyn_cast<StmtPoint>(&Loc)) { 19129c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = L->getStmt(); 19138c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek SourceLocation SLoc = S->getLocStart(); 19148c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << S->getStmtClassName() << ' ' << (void*) S << ' '; 1916e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1917e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner S->printPretty(Out, 0, PrintingPolicy(LO)); 19181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (SLoc.isFileID()) { 19208c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\lline=" 1921642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19227da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1923a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc) 19247da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << "\\l"; 19258c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19275f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (isa<PreStmt>(Loc)) 19281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "\\lPreStmt\\l;"; 19295f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek else if (isa<PostLoad>(Loc)) 19307090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLoad\\l;"; 19317090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostStore>(Loc)) 19327090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostStore\\l"; 19337090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek else if (isa<PostLValue>(Loc)) 19347090d5465de7ca620da16211cf886edf1edc1f1fTed Kremenek Out << "\\lPostLValue\\l"; 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 193610f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 193710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 193810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 19398c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek if (GraphPrintCheckerState->isImplicitNullDeref(N)) 19408c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Implicit-Null Dereference.\\l"; 19418c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isExplicitNullDeref(N)) 19428c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Explicit-Null Dereference.\\l"; 19438c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefDeref(N)) 19448c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Dereference of undefialied value.\\l"; 19458c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefStore(N)) 19468c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Store to Undefined Loc."; 19478c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefResult(N)) 19488c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Result of operation is undefined."; 19498c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isNoReturnCall(N)) 19508c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to function marked \"noreturn\"."; 19518c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isBadCall(N)) 19528c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Call to NULL/Undefined."; 19538c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek else if (GraphPrintCheckerState->isUndefArg(N)) 19548c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek Out << "\\|Argument in call is undefined"; 195510f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 19561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19578c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek break; 19588c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek } 19598c354758c2d39db87c77c723d81e34b4d967f762Ted Kremenek 19609c378f705405d37f49795d5e915989de774fe11fTed Kremenek const BlockEdge &E = cast<BlockEdge>(Loc); 1961aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek Out << "Edge: (B" << E.getSrc()->getBlockID() << ", B" 1962aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek << E.getDst()->getBlockID() << ')'; 19631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19649c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *T = E.getSrc()->getTerminator()) { 19651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1966e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek SourceLocation SLoc = T->getLocStart(); 19671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1968b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\|Terminator: "; 1969e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1970e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner E.getSrc()->printTerminator(Out, LO); 19711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19729b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek if (SLoc.isFileID()) { 19739b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek Out << "\\lline=" 1974642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << GraphPrintSourceManager->getExpansionLineNumber(SLoc) 19757da5aea7669e6db3e593162b8a123aef06a04d07Chris Lattner << " col=" 1976a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth << GraphPrintSourceManager->getExpansionColumnNumber(SLoc); 19779b5551d7f0209cec8b9c555cf70e893940674e5cTed Kremenek } 19781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1979daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek if (isa<SwitchStmt>(T)) { 19809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *Label = E.getDst()->getLabel(); 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Label) { 19839c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const CaseStmt *C = dyn_cast<CaseStmt>(Label)) { 1984daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\lcase "; 1985e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner LangOptions LO; // FIXME. 1986e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner C->getLHS()->printPretty(Out, 0, PrintingPolicy(LO)); 19871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19889c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *RHS = C->getRHS()) { 1989daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << " .. "; 1990e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner RHS->printPretty(Out, 0, PrintingPolicy(LO)); 1991daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 19921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1993daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << ":"; 1994daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1995daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else { 1996daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek assert (isa<DefaultStmt>(Label)); 1997daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\ldefault:"; 1998daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 1999daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 20001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 2001daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek Out << "\\l(implicit) default:"; 2002daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 2003daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek else if (isa<IndirectGotoStmt>(T)) { 2004b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek // FIXME 2005b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 2006b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else { 2007b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\lCondition: "; 2008b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek if (*E.getSrc()->succ_begin() == E.getDst()) 2009b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "true"; 2010b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek else 20111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Out << "false"; 2012b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2014b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek Out << "\\l"; 2015b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 20161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 201710f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#if 0 201810f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // FIXME: Replace with a general scheme to determine 201910f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek // the name of the check. 20204a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek if (GraphPrintCheckerState->isUndefControlFlow(N)) { 20214a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek Out << "\\|Control-flow based on\\lUndefined value.\\l"; 20223b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek } 202310f51e8785e43d5a22acc2d2a638307c582949c2Ted Kremenek#endif 2024aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2025aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 20261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20278bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef state = N->getState(); 2028a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis Out << "\\|StateID: " << (void*) state.getPtr() 20298673a68a8ab55a2bd03f92d636a50e6b0bfad2daTed Kremenek << " NodeID: " << (void*) N << "\\|"; 20305eca482fe895ea57bc82410222e6426c09e63284Ted Kremenek state->printDOT(Out); 2031ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2032ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2033ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 2034ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek if (const ProgramPointTag *tag = Loc.getTag()) { 2035ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\|Tag: " << tag->getTagDescription(); 2036ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek Out << "\\l"; 2037ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek } 2038aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek return Out.str(); 2039aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek } 2040aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek}; 20411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end llvm namespace 2042aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek#endif 2043aa66a32ba177338763cd0cf9df8310dfa2e24ff7Ted Kremenek 2044ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#ifndef NDEBUG 20457ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenektemplate <typename ITERATOR> 20469c378f705405d37f49795d5e915989de774fe11fTed KremenekExplodedNode *GetGraphNode(ITERATOR I) { return *I; } 20477ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek 2048031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xutemplate <> ExplodedNode* 2049031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing XuGetGraphNode<llvm::DenseMap<ExplodedNode*, Expr*>::iterator> 2050031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu (llvm::DenseMap<ExplodedNode*, Expr*>::iterator I) { 20517ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek return I->first; 20527ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek} 2053ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek#endif 2054ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek 2055d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(bool trim) { 20561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump#ifndef NDEBUG 2057ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek if (trim) { 2058031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::vector<ExplodedNode*> Src; 2059940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2060940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Flush any outstanding reports to make sure we cover all the nodes. 2061940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // This does not cause them to get displayed. 2062940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek for (BugReporter::iterator I=BR.begin(), E=BR.end(); I!=E; ++I) 2063940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek const_cast<BugType*>(*I)->FlushReports(BR); 2064940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek 2065940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek // Iterate through the reports and get their nodes. 2066404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (BugReporter::EQClasses_iterator 2067404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EI = BR.EQClasses_begin(), EE = BR.EQClasses_end(); EI != EE; ++EI) { 20684a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer ExplodedNode *N = const_cast<ExplodedNode*>(EI->begin()->getErrorNode()); 2069404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (N) Src.push_back(N); 2070940abcc574580e454689be801f38a3d4d41ab01fTed Kremenek } 20711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20727ec07fd91f6eae8bd619ebb8512805222ca41c92Ted Kremenek ViewGraph(&Src[0], &Src[0]+Src.size()); 2073ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek } 2074493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek else { 2075493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2076493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 2077ae6814efb6c41bd0c0f6413d25097105284d5be7Ted Kremenek 2078d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*G.roots_begin(), "ExprEngine"); 20791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2080493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = NULL; 2081493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = NULL; 2082493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek } 2083493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#endif 2084493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek} 2085493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2086d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisvoid ExprEngine::ViewGraph(ExplodedNode** Beg, ExplodedNode** End) { 2087493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek#ifndef NDEBUG 2088493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintCheckerState = this; 2089493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek GraphPrintSourceManager = &getContext().getSourceManager(); 20901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2091031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu std::auto_ptr<ExplodedGraph> TrimmedG(G.Trim(Beg, End).first); 2092493d7a26d5ea319770ba904b43f2740d43b820cbTed Kremenek 2093cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!TrimmedG.get()) 20946cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "warning: Trimmed ExplodedGraph is empty.\n"; 2095cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 2096d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis llvm::ViewGraph(*TrimmedG->roots_begin(), "TrimmedExprEngine"); 20971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20983b4f6702860208692f6ef28401e68de4e3ff9af9Ted Kremenek GraphPrintCheckerState = NULL; 2099e97ca065c91ff9ca2a2a42eb443eaa553c40441cTed Kremenek GraphPrintSourceManager = NULL; 2100e01c98767dfd7153c3c84637c36659e3bbe16ff7Ted Kremenek#endif 2101ee98546b0d5f3439c4a590b0d7d1545af794a0ecTed Kremenek} 2102