Ted Kremenek | 5f76431 | 2011-08-20 05:59:58 +0000 | [diff] [blame] | 1 | //===- ExprEngineCXX.cpp - ExprEngine support for C++ -----------*- C++ -*-===// |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file defines the C++ expression evaluation engine. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Argyrios Kyrtzidis | eb48bd1 | 2011-03-01 01:16:03 +0000 | [diff] [blame] | 14 | #include "clang/StaticAnalyzer/Core/CheckerManager.h" |
Ted Kremenek | 9b66371 | 2011-02-10 01:03:03 +0000 | [diff] [blame] | 15 | #include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" |
| 16 | #include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" |
Jordy Rose | d1e5a89 | 2011-09-02 08:02:59 +0000 | [diff] [blame^] | 17 | #include "clang/StaticAnalyzer/Core/PathSensitive/ObjCMessage.h" |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 18 | #include "clang/AST/DeclCXX.h" |
| 19 | |
| 20 | using namespace clang; |
Ted Kremenek | 9ef6537 | 2010-12-23 07:20:52 +0000 | [diff] [blame] | 21 | using namespace ento; |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 22 | |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 23 | namespace { |
| 24 | class CallExprWLItem { |
| 25 | public: |
| 26 | CallExpr::const_arg_iterator I; |
| 27 | ExplodedNode *N; |
| 28 | |
| 29 | CallExprWLItem(const CallExpr::const_arg_iterator &i, ExplodedNode *n) |
| 30 | : I(i), N(n) {} |
| 31 | }; |
| 32 | } |
| 33 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 34 | void ExprEngine::evalArguments(ConstExprIterator AI, ConstExprIterator AE, |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 35 | const FunctionProtoType *FnType, |
Marcin Swiderski | 82c63bf | 2010-11-17 21:27:36 +0000 | [diff] [blame] | 36 | ExplodedNode *Pred, ExplodedNodeSet &Dst, |
| 37 | bool FstArgAsLValue) { |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 38 | |
| 39 | |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 40 | SmallVector<CallExprWLItem, 20> WorkList; |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 41 | WorkList.reserve(AE - AI); |
| 42 | WorkList.push_back(CallExprWLItem(AI, Pred)); |
| 43 | |
| 44 | while (!WorkList.empty()) { |
| 45 | CallExprWLItem Item = WorkList.back(); |
| 46 | WorkList.pop_back(); |
| 47 | |
| 48 | if (Item.I == AE) { |
| 49 | Dst.insert(Item.N); |
| 50 | continue; |
| 51 | } |
| 52 | |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 53 | // Evaluate the argument. |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 54 | ExplodedNodeSet Tmp; |
Marcin Swiderski | 82c63bf | 2010-11-17 21:27:36 +0000 | [diff] [blame] | 55 | if (FstArgAsLValue) { |
| 56 | FstArgAsLValue = false; |
Marcin Swiderski | 82c63bf | 2010-11-17 21:27:36 +0000 | [diff] [blame] | 57 | } |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 58 | |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 59 | Visit(*Item.I, Item.N, Tmp); |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 60 | ++(Item.I); |
| 61 | for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI != NE; ++NI) |
| 62 | WorkList.push_back(CallExprWLItem(Item.I, *NI)); |
| 63 | } |
| 64 | } |
| 65 | |
Ted Kremenek | b277159 | 2011-03-30 17:41:19 +0000 | [diff] [blame] | 66 | void ExprEngine::evalCallee(const CallExpr *callExpr, |
| 67 | const ExplodedNodeSet &src, |
| 68 | ExplodedNodeSet &dest) { |
| 69 | |
| 70 | const Expr *callee = 0; |
| 71 | |
| 72 | switch (callExpr->getStmtClass()) { |
| 73 | case Stmt::CXXMemberCallExprClass: { |
| 74 | // Evaluate the implicit object argument that is the recipient of the |
| 75 | // call. |
| 76 | callee = cast<CXXMemberCallExpr>(callExpr)->getImplicitObjectArgument(); |
| 77 | |
| 78 | // FIXME: handle member pointers. |
| 79 | if (!callee) |
| 80 | return; |
| 81 | |
| 82 | break; |
| 83 | } |
| 84 | default: { |
| 85 | callee = callExpr->getCallee()->IgnoreParens(); |
| 86 | break; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | for (ExplodedNodeSet::iterator i = src.begin(), e = src.end(); i != e; ++i) |
| 91 | Visit(callee, *i, dest); |
| 92 | } |
| 93 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 94 | const CXXThisRegion *ExprEngine::getCXXThisRegion(const CXXRecordDecl *D, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 95 | const StackFrameContext *SFC) { |
John McCall | f4c7371 | 2011-01-19 06:33:43 +0000 | [diff] [blame] | 96 | const Type *T = D->getTypeForDecl(); |
John McCall | b168cbf | 2010-11-16 09:18:38 +0000 | [diff] [blame] | 97 | QualType PT = getContext().getPointerType(QualType(T, 0)); |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 98 | return svalBuilder.getRegionManager().getCXXThisRegion(PT, SFC); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 101 | const CXXThisRegion *ExprEngine::getCXXThisRegion(const CXXMethodDecl *decl, |
Zhongxing Xu | 3230302 | 2010-11-24 13:48:50 +0000 | [diff] [blame] | 102 | const StackFrameContext *frameCtx) { |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 103 | return svalBuilder.getRegionManager(). |
Zhongxing Xu | 3230302 | 2010-11-24 13:48:50 +0000 | [diff] [blame] | 104 | getCXXThisRegion(decl->getThisType(getContext()), frameCtx); |
| 105 | } |
| 106 | |
Ted Kremenek | eea72a9 | 2011-07-28 23:07:36 +0000 | [diff] [blame] | 107 | void ExprEngine::CreateCXXTemporaryObject(const MaterializeTemporaryExpr *ME, |
| 108 | ExplodedNode *Pred, |
| 109 | ExplodedNodeSet &Dst) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 110 | ExplodedNodeSet Tmp; |
Ted Kremenek | eea72a9 | 2011-07-28 23:07:36 +0000 | [diff] [blame] | 111 | Visit(ME->GetTemporaryExpr(), Pred, Tmp); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 112 | for (ExplodedNodeSet::iterator I = Tmp.begin(), E = Tmp.end(); I != E; ++I) { |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 113 | const ProgramState *state = (*I)->getState(); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 114 | |
| 115 | // Bind the temporary object to the value of the expression. Then bind |
| 116 | // the expression to the location of the object. |
Ted Kremenek | eea72a9 | 2011-07-28 23:07:36 +0000 | [diff] [blame] | 117 | SVal V = state->getSVal(ME->GetTemporaryExpr()); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 118 | |
| 119 | const MemRegion *R = |
Ted Kremenek | eea72a9 | 2011-07-28 23:07:36 +0000 | [diff] [blame] | 120 | svalBuilder.getRegionManager().getCXXTempObjectRegion(ME, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 121 | Pred->getLocationContext()); |
| 122 | |
| 123 | state = state->bindLoc(loc::MemRegionVal(R), V); |
Ted Kremenek | eea72a9 | 2011-07-28 23:07:36 +0000 | [diff] [blame] | 124 | MakeNode(Dst, ME, Pred, state->BindExpr(ME, loc::MemRegionVal(R))); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 125 | } |
| 126 | } |
| 127 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 128 | void ExprEngine::VisitCXXConstructExpr(const CXXConstructExpr *E, |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 129 | const MemRegion *Dest, |
| 130 | ExplodedNode *Pred, |
| 131 | ExplodedNodeSet &destNodes) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 132 | |
| 133 | const CXXConstructorDecl *CD = E->getConstructor(); |
| 134 | assert(CD); |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 135 | |
| 136 | #if 0 |
Sean Hunt | 10620eb | 2011-05-06 20:44:56 +0000 | [diff] [blame] | 137 | if (!(CD->doesThisDeclarationHaveABody() && AMgr.shouldInlineCall())) |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 138 | // FIXME: invalidate the object. |
| 139 | return; |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 140 | #endif |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 141 | |
| 142 | // Evaluate other arguments. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 143 | ExplodedNodeSet argsEvaluated; |
Zhongxing Xu | 107ccd1 | 2010-04-20 05:40:40 +0000 | [diff] [blame] | 144 | const FunctionProtoType *FnType = CD->getType()->getAs<FunctionProtoType>(); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 145 | evalArguments(E->arg_begin(), E->arg_end(), FnType, Pred, argsEvaluated); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 146 | |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 147 | #if 0 |
| 148 | // Is the constructor elidable? |
| 149 | if (E->isElidable()) { |
| 150 | VisitAggExpr(E->getArg(0), destNodes, Pred, Dst); |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 151 | // FIXME: this is here to force propagation if VisitAggExpr doesn't |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 152 | if (destNodes.empty()) |
| 153 | destNodes.Add(Pred); |
| 154 | return; |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 155 | } |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 156 | #endif |
| 157 | |
| 158 | // Perform the previsit of the constructor. |
| 159 | ExplodedNodeSet destPreVisit; |
| 160 | getCheckerManager().runCheckersForPreStmt(destPreVisit, argsEvaluated, E, |
| 161 | *this); |
| 162 | |
| 163 | // Evaluate the constructor. Currently we don't now allow checker-specific |
| 164 | // implementations of specific constructors (as we do with ordinary |
| 165 | // function calls. We can re-evaluate this in the future. |
| 166 | |
| 167 | #if 0 |
| 168 | // Inlining currently isn't fully implemented. |
| 169 | |
| 170 | if (AMgr.shouldInlineCall()) { |
| 171 | if (!Dest) |
| 172 | Dest = |
| 173 | svalBuilder.getRegionManager().getCXXTempObjectRegion(E, |
| 174 | Pred->getLocationContext()); |
| 175 | |
| 176 | // The callee stack frame context used to create the 'this' |
| 177 | // parameter region. |
| 178 | const StackFrameContext *SFC = |
| 179 | AMgr.getStackFrame(CD, Pred->getLocationContext(), |
| 180 | E, Builder->getBlock(), Builder->getIndex()); |
| 181 | |
| 182 | // Create the 'this' region. |
| 183 | const CXXThisRegion *ThisR = |
| 184 | getCXXThisRegion(E->getConstructor()->getParent(), SFC); |
| 185 | |
| 186 | CallEnter Loc(E, SFC, Pred->getLocationContext()); |
| 187 | |
| 188 | |
| 189 | for (ExplodedNodeSet::iterator NI = argsEvaluated.begin(), |
| 190 | NE = argsEvaluated.end(); NI != NE; ++NI) { |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 191 | const ProgramState *state = (*NI)->getState(); |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 192 | // Setup 'this' region, so that the ctor is evaluated on the object pointed |
| 193 | // by 'Dest'. |
| 194 | state = state->bindLoc(loc::MemRegionVal(ThisR), loc::MemRegionVal(Dest)); |
| 195 | if (ExplodedNode *N = Builder->generateNode(Loc, state, *NI)) |
| 196 | destNodes.Add(N); |
| 197 | } |
| 198 | } |
| 199 | #endif |
| 200 | |
| 201 | // Default semantics: invalidate all regions passed as arguments. |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 202 | ExplodedNodeSet destCall; |
| 203 | |
| 204 | for (ExplodedNodeSet::iterator |
| 205 | i = destPreVisit.begin(), e = destPreVisit.end(); |
| 206 | i != e; ++i) |
| 207 | { |
| 208 | ExplodedNode *Pred = *i; |
Jordy Rose | e38dd95 | 2011-08-28 05:16:28 +0000 | [diff] [blame] | 209 | const LocationContext *LC = Pred->getLocationContext(); |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 210 | const ProgramState *state = Pred->getState(); |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 211 | |
Jordy Rose | e38dd95 | 2011-08-28 05:16:28 +0000 | [diff] [blame] | 212 | state = invalidateArguments(state, CallOrObjCMessage(E, state), LC); |
Ted Kremenek | 5fe9872 | 2011-04-08 22:42:35 +0000 | [diff] [blame] | 213 | Builder->MakeNode(destCall, E, Pred, state); |
| 214 | } |
| 215 | |
| 216 | // Do the post visit. |
| 217 | getCheckerManager().runCheckersForPostStmt(destNodes, destCall, E, *this); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 218 | } |
| 219 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 220 | void ExprEngine::VisitCXXDestructor(const CXXDestructorDecl *DD, |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 221 | const MemRegion *Dest, |
| 222 | const Stmt *S, |
| 223 | ExplodedNode *Pred, |
| 224 | ExplodedNodeSet &Dst) { |
Sean Hunt | 10620eb | 2011-05-06 20:44:56 +0000 | [diff] [blame] | 225 | if (!(DD->doesThisDeclarationHaveABody() && AMgr.shouldInlineCall())) |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 226 | return; |
| 227 | // Create the context for 'this' region. |
| 228 | const StackFrameContext *SFC = AMgr.getStackFrame(DD, |
| 229 | Pred->getLocationContext(), |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 230 | S, Builder->getBlock(), |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 231 | Builder->getIndex()); |
| 232 | |
| 233 | const CXXThisRegion *ThisR = getCXXThisRegion(DD->getParent(), SFC); |
| 234 | |
Zhongxing Xu | 19b78d9 | 2010-11-24 08:53:20 +0000 | [diff] [blame] | 235 | CallEnter PP(S, SFC, Pred->getLocationContext()); |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 236 | |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 237 | const ProgramState *state = Pred->getState(); |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 238 | state = state->bindLoc(loc::MemRegionVal(ThisR), loc::MemRegionVal(Dest)); |
| 239 | ExplodedNode *N = Builder->generateNode(PP, state, Pred); |
| 240 | if (N) |
| 241 | Dst.Add(N); |
| 242 | } |
| 243 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 244 | void ExprEngine::VisitCXXNewExpr(const CXXNewExpr *CNE, ExplodedNode *Pred, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 245 | ExplodedNodeSet &Dst) { |
Ted Kremenek | 41c5f49 | 2011-03-31 04:04:48 +0000 | [diff] [blame] | 246 | |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 247 | unsigned blockCount = Builder->getCurrentBlockCount(); |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 248 | DefinedOrUnknownSVal symVal = |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 249 | svalBuilder.getConjuredSymbolVal(NULL, CNE, CNE->getType(), blockCount); |
Ted Kremenek | 41c5f49 | 2011-03-31 04:04:48 +0000 | [diff] [blame] | 250 | const MemRegion *NewReg = cast<loc::MemRegionVal>(symVal).getRegion(); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 251 | QualType ObjTy = CNE->getType()->getAs<PointerType>()->getPointeeType(); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 252 | const ElementRegion *EleReg = |
Ted Kremenek | 41c5f49 | 2011-03-31 04:04:48 +0000 | [diff] [blame] | 253 | getStoreManager().GetElementZeroRegion(NewReg, ObjTy); |
| 254 | |
| 255 | if (CNE->isArray()) { |
| 256 | // FIXME: allocating an array requires simulating the constructors. |
| 257 | // For now, just return a symbolicated region. |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 258 | const ProgramState *state = Pred->getState(); |
Ted Kremenek | 41c5f49 | 2011-03-31 04:04:48 +0000 | [diff] [blame] | 259 | state = state->BindExpr(CNE, loc::MemRegionVal(EleReg)); |
| 260 | MakeNode(Dst, CNE, Pred, state); |
| 261 | return; |
| 262 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 263 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 264 | // Evaluate constructor arguments. |
| 265 | const FunctionProtoType *FnType = NULL; |
| 266 | const CXXConstructorDecl *CD = CNE->getConstructor(); |
| 267 | if (CD) |
| 268 | FnType = CD->getType()->getAs<FunctionProtoType>(); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 269 | ExplodedNodeSet argsEvaluated; |
| 270 | evalArguments(CNE->constructor_arg_begin(), CNE->constructor_arg_end(), |
| 271 | FnType, Pred, argsEvaluated); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 272 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 273 | // Initialize the object region and bind the 'new' expression. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 274 | for (ExplodedNodeSet::iterator I = argsEvaluated.begin(), |
| 275 | E = argsEvaluated.end(); I != E; ++I) { |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 276 | |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 277 | const ProgramState *state = (*I)->getState(); |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 278 | |
| 279 | // Accumulate list of regions that are invalidated. |
| 280 | // FIXME: Eventually we should unify the logic for constructor |
| 281 | // processing in one place. |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 282 | SmallVector<const MemRegion*, 10> regionsToInvalidate; |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 283 | for (CXXNewExpr::const_arg_iterator |
| 284 | ai = CNE->constructor_arg_begin(), ae = CNE->constructor_arg_end(); |
| 285 | ai != ae; ++ai) |
| 286 | { |
| 287 | SVal val = state->getSVal(*ai); |
| 288 | if (const MemRegion *region = val.getAsRegion()) |
| 289 | regionsToInvalidate.push_back(region); |
| 290 | } |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 291 | |
| 292 | if (ObjTy->isRecordType()) { |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 293 | regionsToInvalidate.push_back(EleReg); |
| 294 | // Invalidate the regions. |
Jordy Rose | 537716a | 2011-08-27 22:51:26 +0000 | [diff] [blame] | 295 | state = state->invalidateRegions(regionsToInvalidate, |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 296 | CNE, blockCount, 0, |
| 297 | /* invalidateGlobals = */ true); |
| 298 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 299 | } else { |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 300 | // Invalidate the regions. |
Jordy Rose | 537716a | 2011-08-27 22:51:26 +0000 | [diff] [blame] | 301 | state = state->invalidateRegions(regionsToInvalidate, |
Ted Kremenek | 9d5d308 | 2011-04-12 05:12:39 +0000 | [diff] [blame] | 302 | CNE, blockCount, 0, |
| 303 | /* invalidateGlobals = */ true); |
| 304 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 305 | if (CNE->hasInitializer()) { |
| 306 | SVal V = state->getSVal(*CNE->constructor_arg_begin()); |
| 307 | state = state->bindLoc(loc::MemRegionVal(EleReg), V); |
| 308 | } else { |
| 309 | // Explicitly set to undefined, because currently we retrieve symbolic |
| 310 | // value from symbolic region. |
| 311 | state = state->bindLoc(loc::MemRegionVal(EleReg), UndefinedVal()); |
| 312 | } |
| 313 | } |
| 314 | state = state->BindExpr(CNE, loc::MemRegionVal(EleReg)); |
Zhongxing Xu | 978b935 | 2010-04-21 02:20:10 +0000 | [diff] [blame] | 315 | MakeNode(Dst, CNE, *I, state); |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 316 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 319 | void ExprEngine::VisitCXXDeleteExpr(const CXXDeleteExpr *CDE, |
Zhongxing Xu | 03509ae | 2010-07-20 06:22:24 +0000 | [diff] [blame] | 320 | ExplodedNode *Pred,ExplodedNodeSet &Dst) { |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 321 | // Should do more checking. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 322 | ExplodedNodeSet Argevaluated; |
| 323 | Visit(CDE->getArgument(), Pred, Argevaluated); |
| 324 | for (ExplodedNodeSet::iterator I = Argevaluated.begin(), |
| 325 | E = Argevaluated.end(); I != E; ++I) { |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 326 | const ProgramState *state = (*I)->getState(); |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 327 | MakeNode(Dst, CDE, *I, state); |
| 328 | } |
| 329 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 330 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 331 | void ExprEngine::VisitCXXThisExpr(const CXXThisExpr *TE, ExplodedNode *Pred, |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 332 | ExplodedNodeSet &Dst) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 333 | // Get the this object region from StoreManager. |
| 334 | const MemRegion *R = |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 335 | svalBuilder.getRegionManager().getCXXThisRegion( |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 336 | getContext().getCanonicalType(TE->getType()), |
| 337 | Pred->getLocationContext()); |
| 338 | |
Ted Kremenek | 18c66fd | 2011-08-15 22:09:50 +0000 | [diff] [blame] | 339 | const ProgramState *state = Pred->getState(); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 340 | SVal V = state->getSVal(loc::MemRegionVal(R)); |
| 341 | MakeNode(Dst, TE, Pred, state->BindExpr(TE, V)); |
| 342 | } |