Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 1 | //===- GRCXXExprEngine.cpp - C++ expr evaluation engine ---------*- C++ -*-===// |
| 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 | |
| 14 | #include "clang/Checker/PathSensitive/AnalysisManager.h" |
| 15 | #include "clang/Checker/PathSensitive/GRExprEngine.h" |
| 16 | #include "clang/AST/DeclCXX.h" |
| 17 | |
| 18 | using namespace clang; |
| 19 | |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 20 | namespace { |
| 21 | class CallExprWLItem { |
| 22 | public: |
| 23 | CallExpr::const_arg_iterator I; |
| 24 | ExplodedNode *N; |
| 25 | |
| 26 | CallExprWLItem(const CallExpr::const_arg_iterator &i, ExplodedNode *n) |
| 27 | : I(i), N(n) {} |
| 28 | }; |
| 29 | } |
| 30 | |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 31 | void GRExprEngine::evalArguments(ConstExprIterator AI, ConstExprIterator AE, |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 32 | const FunctionProtoType *FnType, |
Marcin Swiderski | 82c63bf | 2010-11-17 21:27:36 +0000 | [diff] [blame] | 33 | ExplodedNode *Pred, ExplodedNodeSet &Dst, |
| 34 | bool FstArgAsLValue) { |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 35 | |
| 36 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 37 | llvm::SmallVector<CallExprWLItem, 20> WorkList; |
| 38 | WorkList.reserve(AE - AI); |
| 39 | WorkList.push_back(CallExprWLItem(AI, Pred)); |
| 40 | |
| 41 | while (!WorkList.empty()) { |
| 42 | CallExprWLItem Item = WorkList.back(); |
| 43 | WorkList.pop_back(); |
| 44 | |
| 45 | if (Item.I == AE) { |
| 46 | Dst.insert(Item.N); |
| 47 | continue; |
| 48 | } |
| 49 | |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 50 | // Evaluate the argument. |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 51 | ExplodedNodeSet Tmp; |
Marcin Swiderski | 82c63bf | 2010-11-17 21:27:36 +0000 | [diff] [blame] | 52 | bool VisitAsLvalue = FstArgAsLValue; |
| 53 | if (FstArgAsLValue) { |
| 54 | FstArgAsLValue = false; |
| 55 | } else { |
| 56 | const unsigned ParamIdx = Item.I - AI; |
| 57 | VisitAsLvalue = FnType && ParamIdx < FnType->getNumArgs() |
| 58 | ? FnType->getArgType(ParamIdx)->isReferenceType() |
| 59 | : false; |
| 60 | } |
Ted Kremenek | c69c438 | 2010-09-23 05:14:51 +0000 | [diff] [blame] | 61 | |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 62 | Visit(*Item.I, Item.N, Tmp); |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 63 | ++(Item.I); |
| 64 | for (ExplodedNodeSet::iterator NI=Tmp.begin(), NE=Tmp.end(); NI != NE; ++NI) |
| 65 | WorkList.push_back(CallExprWLItem(Item.I, *NI)); |
| 66 | } |
| 67 | } |
| 68 | |
Zhongxing Xu | 9dc84c9 | 2010-11-16 07:52:17 +0000 | [diff] [blame] | 69 | const CXXThisRegion *GRExprEngine::getCXXThisRegion(const CXXRecordDecl *D, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 70 | const StackFrameContext *SFC) { |
John McCall | b168cbf | 2010-11-16 09:18:38 +0000 | [diff] [blame] | 71 | Type *T = D->getTypeForDecl(); |
| 72 | QualType PT = getContext().getPointerType(QualType(T, 0)); |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 73 | return svalBuilder.getRegionManager().getCXXThisRegion(PT, SFC); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Zhongxing Xu | 3230302 | 2010-11-24 13:48:50 +0000 | [diff] [blame] | 76 | const CXXThisRegion *GRExprEngine::getCXXThisRegion(const CXXMethodDecl *decl, |
| 77 | const StackFrameContext *frameCtx) { |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 78 | return svalBuilder.getRegionManager(). |
Zhongxing Xu | 3230302 | 2010-11-24 13:48:50 +0000 | [diff] [blame] | 79 | getCXXThisRegion(decl->getThisType(getContext()), frameCtx); |
| 80 | } |
| 81 | |
Zhongxing Xu | 03509ae | 2010-07-20 06:22:24 +0000 | [diff] [blame] | 82 | void GRExprEngine::CreateCXXTemporaryObject(const Expr *Ex, ExplodedNode *Pred, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 83 | ExplodedNodeSet &Dst) { |
| 84 | ExplodedNodeSet Tmp; |
| 85 | Visit(Ex, Pred, Tmp); |
| 86 | for (ExplodedNodeSet::iterator I = Tmp.begin(), E = Tmp.end(); I != E; ++I) { |
| 87 | const GRState *state = GetState(*I); |
| 88 | |
| 89 | // Bind the temporary object to the value of the expression. Then bind |
| 90 | // the expression to the location of the object. |
| 91 | SVal V = state->getSVal(Ex); |
| 92 | |
| 93 | const MemRegion *R = |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 94 | svalBuilder.getRegionManager().getCXXTempObjectRegion(Ex, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 95 | Pred->getLocationContext()); |
| 96 | |
| 97 | state = state->bindLoc(loc::MemRegionVal(R), V); |
| 98 | MakeNode(Dst, Ex, Pred, state->BindExpr(Ex, loc::MemRegionVal(R))); |
| 99 | } |
| 100 | } |
| 101 | |
Zhongxing Xu | 7ce351d | 2010-11-01 09:09:44 +0000 | [diff] [blame] | 102 | void GRExprEngine::VisitCXXConstructExpr(const CXXConstructExpr *E, |
| 103 | const MemRegion *Dest, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 104 | ExplodedNode *Pred, |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 105 | ExplodedNodeSet &Dst) { |
Zhongxing Xu | 7ce351d | 2010-11-01 09:09:44 +0000 | [diff] [blame] | 106 | if (!Dest) |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 107 | Dest = svalBuilder.getRegionManager().getCXXTempObjectRegion(E, |
Zhongxing Xu | 7ce351d | 2010-11-01 09:09:44 +0000 | [diff] [blame] | 108 | Pred->getLocationContext()); |
| 109 | |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 110 | if (E->isElidable()) { |
| 111 | VisitAggExpr(E->getArg(0), Dest, Pred, Dst); |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | const CXXConstructorDecl *CD = E->getConstructor(); |
| 116 | assert(CD); |
| 117 | |
Zhongxing Xu | 7b99d12 | 2010-05-06 02:59:29 +0000 | [diff] [blame] | 118 | if (!(CD->isThisDeclarationADefinition() && AMgr.shouldInlineCall())) |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 119 | // FIXME: invalidate the object. |
| 120 | return; |
| 121 | |
| 122 | |
| 123 | // Evaluate other arguments. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 124 | ExplodedNodeSet argsEvaluated; |
Zhongxing Xu | 107ccd1 | 2010-04-20 05:40:40 +0000 | [diff] [blame] | 125 | const FunctionProtoType *FnType = CD->getType()->getAs<FunctionProtoType>(); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 126 | evalArguments(E->arg_begin(), E->arg_end(), FnType, Pred, argsEvaluated); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 127 | // The callee stack frame context used to create the 'this' parameter region. |
| 128 | const StackFrameContext *SFC = AMgr.getStackFrame(CD, |
| 129 | Pred->getLocationContext(), |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 130 | E, Builder->getBlock(), |
| 131 | Builder->getIndex()); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 132 | |
Zhongxing Xu | 9dc84c9 | 2010-11-16 07:52:17 +0000 | [diff] [blame] | 133 | const CXXThisRegion *ThisR =getCXXThisRegion(E->getConstructor()->getParent(), |
| 134 | SFC); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 135 | |
Zhongxing Xu | 19b78d9 | 2010-11-24 08:53:20 +0000 | [diff] [blame] | 136 | CallEnter Loc(E, SFC, Pred->getLocationContext()); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 137 | for (ExplodedNodeSet::iterator NI = argsEvaluated.begin(), |
| 138 | NE = argsEvaluated.end(); NI != NE; ++NI) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 139 | const GRState *state = GetState(*NI); |
Zhongxing Xu | 3bf185b | 2010-08-24 04:26:55 +0000 | [diff] [blame] | 140 | // Setup 'this' region, so that the ctor is evaluated on the object pointed |
| 141 | // by 'Dest'. |
Zhongxing Xu | 7ce351d | 2010-11-01 09:09:44 +0000 | [diff] [blame] | 142 | state = state->bindLoc(loc::MemRegionVal(ThisR), loc::MemRegionVal(Dest)); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 143 | ExplodedNode *N = Builder->generateNode(Loc, state, Pred); |
| 144 | if (N) |
| 145 | Dst.Add(N); |
| 146 | } |
| 147 | } |
| 148 | |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 149 | void GRExprEngine::VisitCXXDestructor(const CXXDestructorDecl *DD, |
| 150 | const MemRegion *Dest, |
| 151 | const Stmt *S, |
| 152 | ExplodedNode *Pred, |
| 153 | ExplodedNodeSet &Dst) { |
| 154 | if (!(DD->isThisDeclarationADefinition() && AMgr.shouldInlineCall())) |
| 155 | return; |
| 156 | // Create the context for 'this' region. |
| 157 | const StackFrameContext *SFC = AMgr.getStackFrame(DD, |
| 158 | Pred->getLocationContext(), |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 159 | S, Builder->getBlock(), |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 160 | Builder->getIndex()); |
| 161 | |
| 162 | const CXXThisRegion *ThisR = getCXXThisRegion(DD->getParent(), SFC); |
| 163 | |
Zhongxing Xu | 19b78d9 | 2010-11-24 08:53:20 +0000 | [diff] [blame] | 164 | CallEnter PP(S, SFC, Pred->getLocationContext()); |
Zhongxing Xu | b13453b | 2010-11-20 06:53:12 +0000 | [diff] [blame] | 165 | |
| 166 | const GRState *state = Pred->getState(); |
| 167 | state = state->bindLoc(loc::MemRegionVal(ThisR), loc::MemRegionVal(Dest)); |
| 168 | ExplodedNode *N = Builder->generateNode(PP, state, Pred); |
| 169 | if (N) |
| 170 | Dst.Add(N); |
| 171 | } |
| 172 | |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 173 | void GRExprEngine::VisitCXXMemberCallExpr(const CXXMemberCallExpr *MCE, |
| 174 | ExplodedNode *Pred, |
| 175 | ExplodedNodeSet &Dst) { |
| 176 | // Get the method type. |
| 177 | const FunctionProtoType *FnType = |
| 178 | MCE->getCallee()->getType()->getAs<FunctionProtoType>(); |
| 179 | assert(FnType && "Method type not available"); |
| 180 | |
| 181 | // Evaluate explicit arguments with a worklist. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 182 | ExplodedNodeSet argsEvaluated; |
| 183 | evalArguments(MCE->arg_begin(), MCE->arg_end(), FnType, Pred, argsEvaluated); |
Zhongxing Xu | 107ccd1 | 2010-04-20 05:40:40 +0000 | [diff] [blame] | 184 | |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 185 | // Evaluate the implicit object argument. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 186 | ExplodedNodeSet AllargsEvaluated; |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 187 | const MemberExpr *ME = dyn_cast<MemberExpr>(MCE->getCallee()->IgnoreParens()); |
| 188 | if (!ME) |
| 189 | return; |
| 190 | Expr *ObjArgExpr = ME->getBase(); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 191 | for (ExplodedNodeSet::iterator I = argsEvaluated.begin(), |
| 192 | E = argsEvaluated.end(); I != E; ++I) { |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 193 | Visit(ObjArgExpr, *I, AllargsEvaluated); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 194 | } |
| 195 | |
Ted Kremenek | a54e824 | 2010-09-30 01:06:29 +0000 | [diff] [blame] | 196 | // Now evaluate the call itself. |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 197 | const CXXMethodDecl *MD = cast<CXXMethodDecl>(ME->getMemberDecl()); |
| 198 | assert(MD && "not a CXXMethodDecl?"); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 199 | evalMethodCall(MCE, MD, ObjArgExpr, Pred, AllargsEvaluated, Dst); |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | void GRExprEngine::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *C, |
| 203 | ExplodedNode *Pred, |
| 204 | ExplodedNodeSet &Dst) { |
| 205 | const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(C->getCalleeDecl()); |
| 206 | if (!MD) { |
| 207 | // If the operator doesn't represent a method call treat as regural call. |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 208 | VisitCall(C, Pred, C->arg_begin(), C->arg_end(), Dst); |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 209 | return; |
| 210 | } |
| 211 | |
| 212 | // Determine the type of function we're calling (if available). |
| 213 | const FunctionProtoType *Proto = NULL; |
| 214 | QualType FnType = C->getCallee()->IgnoreParens()->getType(); |
| 215 | if (const PointerType *FnTypePtr = FnType->getAs<PointerType>()) |
| 216 | Proto = FnTypePtr->getPointeeType()->getAs<FunctionProtoType>(); |
| 217 | |
| 218 | // Evaluate arguments treating the first one (object method is called on) |
| 219 | // as alvalue. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 220 | ExplodedNodeSet argsEvaluated; |
| 221 | evalArguments(C->arg_begin(), C->arg_end(), Proto, Pred, argsEvaluated, true); |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 222 | |
| 223 | // Now evaluate the call itself. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 224 | evalMethodCall(C, MD, C->getArg(0), Pred, argsEvaluated, Dst); |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 225 | } |
| 226 | |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 227 | void GRExprEngine::evalMethodCall(const CallExpr *MCE, const CXXMethodDecl *MD, |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 228 | const Expr *ThisExpr, ExplodedNode *Pred, |
| 229 | ExplodedNodeSet &Src, ExplodedNodeSet &Dst) { |
| 230 | // Allow checkers to pre-visit the member call. |
| 231 | ExplodedNodeSet PreVisitChecks; |
| 232 | CheckerVisit(MCE, PreVisitChecks, Src, PreVisitStmtCallback); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 233 | |
Ted Kremenek | a54e824 | 2010-09-30 01:06:29 +0000 | [diff] [blame] | 234 | if (!(MD->isThisDeclarationADefinition() && AMgr.shouldInlineCall())) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 235 | // FIXME: conservative method call evaluation. |
Ted Kremenek | a54e824 | 2010-09-30 01:06:29 +0000 | [diff] [blame] | 236 | CheckerVisit(MCE, Dst, PreVisitChecks, PostVisitStmtCallback); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 237 | return; |
Ted Kremenek | a54e824 | 2010-09-30 01:06:29 +0000 | [diff] [blame] | 238 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 239 | |
| 240 | const StackFrameContext *SFC = AMgr.getStackFrame(MD, |
| 241 | Pred->getLocationContext(), |
Ted Kremenek | 892697d | 2010-12-16 07:46:53 +0000 | [diff] [blame] | 242 | MCE, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 243 | Builder->getBlock(), |
| 244 | Builder->getIndex()); |
Zhongxing Xu | 3230302 | 2010-11-24 13:48:50 +0000 | [diff] [blame] | 245 | const CXXThisRegion *ThisR = getCXXThisRegion(MD, SFC); |
Zhongxing Xu | 19b78d9 | 2010-11-24 08:53:20 +0000 | [diff] [blame] | 246 | CallEnter Loc(MCE, SFC, Pred->getLocationContext()); |
Ted Kremenek | a54e824 | 2010-09-30 01:06:29 +0000 | [diff] [blame] | 247 | for (ExplodedNodeSet::iterator I = PreVisitChecks.begin(), |
| 248 | E = PreVisitChecks.end(); I != E; ++I) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 249 | // Set up 'this' region. |
| 250 | const GRState *state = GetState(*I); |
Marcin Swiderski | 6a02b60 | 2010-11-18 06:29:23 +0000 | [diff] [blame] | 251 | state = state->bindLoc(loc::MemRegionVal(ThisR), state->getSVal(ThisExpr)); |
| 252 | Dst.Add(Builder->generateNode(Loc, state, *I)); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 253 | } |
| 254 | } |
| 255 | |
Zhongxing Xu | 03509ae | 2010-07-20 06:22:24 +0000 | [diff] [blame] | 256 | void GRExprEngine::VisitCXXNewExpr(const CXXNewExpr *CNE, ExplodedNode *Pred, |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 257 | ExplodedNodeSet &Dst) { |
| 258 | if (CNE->isArray()) { |
| 259 | // FIXME: allocating an array has not been handled. |
| 260 | return; |
| 261 | } |
| 262 | |
| 263 | unsigned Count = Builder->getCurrentBlockCount(); |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 264 | DefinedOrUnknownSVal symVal = |
| 265 | svalBuilder.getConjuredSymbolVal(NULL, CNE, CNE->getType(), Count); |
| 266 | const MemRegion *NewReg = cast<loc::MemRegionVal>(symVal).getRegion(); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 267 | |
| 268 | QualType ObjTy = CNE->getType()->getAs<PointerType>()->getPointeeType(); |
| 269 | |
| 270 | const ElementRegion *EleReg = |
| 271 | getStoreManager().GetElementZeroRegion(NewReg, ObjTy); |
| 272 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 273 | // Evaluate constructor arguments. |
| 274 | const FunctionProtoType *FnType = NULL; |
| 275 | const CXXConstructorDecl *CD = CNE->getConstructor(); |
| 276 | if (CD) |
| 277 | FnType = CD->getType()->getAs<FunctionProtoType>(); |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 278 | ExplodedNodeSet argsEvaluated; |
| 279 | evalArguments(CNE->constructor_arg_begin(), CNE->constructor_arg_end(), |
| 280 | FnType, Pred, argsEvaluated); |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 281 | |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 282 | // Initialize the object region and bind the 'new' expression. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 283 | for (ExplodedNodeSet::iterator I = argsEvaluated.begin(), |
| 284 | E = argsEvaluated.end(); I != E; ++I) { |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 285 | const GRState *state = GetState(*I); |
| 286 | |
| 287 | if (ObjTy->isRecordType()) { |
Jordy Rose | ff59efd | 2010-08-03 20:44:35 +0000 | [diff] [blame] | 288 | state = state->InvalidateRegion(EleReg, CNE, Count); |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 289 | } else { |
| 290 | if (CNE->hasInitializer()) { |
| 291 | SVal V = state->getSVal(*CNE->constructor_arg_begin()); |
| 292 | state = state->bindLoc(loc::MemRegionVal(EleReg), V); |
| 293 | } else { |
| 294 | // Explicitly set to undefined, because currently we retrieve symbolic |
| 295 | // value from symbolic region. |
| 296 | state = state->bindLoc(loc::MemRegionVal(EleReg), UndefinedVal()); |
| 297 | } |
| 298 | } |
| 299 | state = state->BindExpr(CNE, loc::MemRegionVal(EleReg)); |
Zhongxing Xu | 978b935 | 2010-04-21 02:20:10 +0000 | [diff] [blame] | 300 | MakeNode(Dst, CNE, *I, state); |
Zhongxing Xu | b17b1b3 | 2010-04-20 03:37:34 +0000 | [diff] [blame] | 301 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 302 | } |
| 303 | |
Zhongxing Xu | 03509ae | 2010-07-20 06:22:24 +0000 | [diff] [blame] | 304 | void GRExprEngine::VisitCXXDeleteExpr(const CXXDeleteExpr *CDE, |
| 305 | ExplodedNode *Pred,ExplodedNodeSet &Dst) { |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 306 | // Should do more checking. |
Ted Kremenek | 9c14953 | 2010-12-01 21:57:22 +0000 | [diff] [blame] | 307 | ExplodedNodeSet Argevaluated; |
| 308 | Visit(CDE->getArgument(), Pred, Argevaluated); |
| 309 | for (ExplodedNodeSet::iterator I = Argevaluated.begin(), |
| 310 | E = Argevaluated.end(); I != E; ++I) { |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 311 | const GRState *state = GetState(*I); |
| 312 | MakeNode(Dst, CDE, *I, state); |
| 313 | } |
| 314 | } |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 315 | |
Zhongxing Xu | 03509ae | 2010-07-20 06:22:24 +0000 | [diff] [blame] | 316 | void GRExprEngine::VisitCXXThisExpr(const CXXThisExpr *TE, ExplodedNode *Pred, |
Zhongxing Xu | 6b85138 | 2010-04-21 02:17:31 +0000 | [diff] [blame] | 317 | ExplodedNodeSet &Dst) { |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 318 | // Get the this object region from StoreManager. |
| 319 | const MemRegion *R = |
Ted Kremenek | c8413fd | 2010-12-02 07:49:45 +0000 | [diff] [blame] | 320 | svalBuilder.getRegionManager().getCXXThisRegion( |
Zhongxing Xu | cb7464a | 2010-04-19 12:51:02 +0000 | [diff] [blame] | 321 | getContext().getCanonicalType(TE->getType()), |
| 322 | Pred->getLocationContext()); |
| 323 | |
| 324 | const GRState *state = GetState(Pred); |
| 325 | SVal V = state->getSVal(loc::MemRegionVal(R)); |
| 326 | MakeNode(Dst, TE, Pred, state->BindExpr(TE, V)); |
| 327 | } |