ExprEngine.h revision 30a2e16f6c27f888dd11eba6bbbae1e980078fcb 
1//===-- ExprEngine.h - Path-Sensitive Expression-Level Dataflow ---*- 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 a meta-engine for path-sensitive dataflow analysis that
11//  is built on CoreEngine, but provides the boilerplate to execute transfer
12//  functions and build the ExplodedGraph at the expression level.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_CLANG_GR_EXPRENGINE
17#define LLVM_CLANG_GR_EXPRENGINE
18
19#include "clang/AST/Expr.h"
20#include "clang/AST/Type.h"
21#include "clang/Analysis/DomainSpecific/ObjCNoReturn.h"
22#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
23#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h"
24#include "clang/StaticAnalyzer/Core/PathSensitive/CoreEngine.h"
25#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
26#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramStateTrait.h"
27#include "clang/StaticAnalyzer/Core/PathSensitive/SubEngine.h"
28
29namespace clang {
30
31class AnalysisDeclContextManager;
32class CXXCatchStmt;
33class CXXConstructExpr;
34class CXXDeleteExpr;
35class CXXNewExpr;
36class CXXTemporaryObjectExpr;
37class CXXThisExpr;
38class MaterializeTemporaryExpr;
39class ObjCAtSynchronizedStmt;
40class ObjCForCollectionStmt;
41
42namespace ento {
43
44class AnalysisManager;
45class CallEvent;
46class SimpleCall;
47
48class ExprEngine : public SubEngine {
49  AnalysisManager &AMgr;
50
51  AnalysisDeclContextManager &AnalysisDeclContexts;
52
53  CoreEngine Engine;
54
55  /// G - the simulation graph.
56  ExplodedGraph& G;
57
58  /// StateMgr - Object that manages the data for all created states.
59  ProgramStateManager StateMgr;
60
61  /// SymMgr - Object that manages the symbol information.
62  SymbolManager& SymMgr;
63
64  /// svalBuilder - SValBuilder object that creates SVals from expressions.
65  SValBuilder &svalBuilder;
66
67  /// EntryNode - The immediate predecessor node.
68  ExplodedNode *EntryNode;
69
70  /// CleanedState - The state for EntryNode "cleaned" of all dead
71  ///  variables and symbols (as determined by a liveness analysis).
72  ProgramStateRef CleanedState;
73
74  /// currStmt - The current block-level statement.
75  const Stmt *currStmt;
76  unsigned int currStmtIdx;
77  const NodeBuilderContext *currBldrCtx;
78
79  /// Helper object to determine if an Objective-C message expression
80  /// implicitly never returns.
81  ObjCNoReturn ObjCNoRet;
82
83  /// Whether or not GC is enabled in this analysis.
84  bool ObjCGCEnabled;
85
86  /// The BugReporter associated with this engine.  It is important that
87  ///  this object be placed at the very end of member variables so that its
88  ///  destructor is called before the rest of the ExprEngine is destroyed.
89  GRBugReporter BR;
90
91  /// The functions which have been analyzed through inlining. This is owned by
92  /// AnalysisConsumer. It can be null.
93  SetOfConstDecls *VisitedCallees;
94
95public:
96  ExprEngine(AnalysisManager &mgr, bool gcEnabled,
97             SetOfConstDecls *VisitedCalleesIn,
98             FunctionSummariesTy *FS);
99
100  ~ExprEngine();
101
102  /// Returns true if there is still simulation state on the worklist.
103  bool ExecuteWorkList(const LocationContext *L, unsigned Steps = 150000) {
104    return Engine.ExecuteWorkList(L, Steps, 0);
105  }
106
107  /// Execute the work list with an initial state. Nodes that reaches the exit
108  /// of the function are added into the Dst set, which represent the exit
109  /// state of the function call. Returns true if there is still simulation
110  /// state on the worklist.
111  bool ExecuteWorkListWithInitialState(const LocationContext *L, unsigned Steps,
112                                       ProgramStateRef InitState,
113                                       ExplodedNodeSet &Dst) {
114    return Engine.ExecuteWorkListWithInitialState(L, Steps, InitState, Dst);
115  }
116
117  /// getContext - Return the ASTContext associated with this analysis.
118  ASTContext &getContext() const { return AMgr.getASTContext(); }
119
120  virtual AnalysisManager &getAnalysisManager() { return AMgr; }
121
122  CheckerManager &getCheckerManager() const {
123    return *AMgr.getCheckerManager();
124  }
125
126  SValBuilder &getSValBuilder() { return svalBuilder; }
127
128  BugReporter& getBugReporter() { return BR; }
129
130  const NodeBuilderContext &getBuilderContext() {
131    assert(currBldrCtx);
132    return *currBldrCtx;
133  }
134
135  bool isObjCGCEnabled() { return ObjCGCEnabled; }
136
137  const Stmt *getStmt() const;
138
139  void GenerateAutoTransition(ExplodedNode *N);
140  void enqueueEndOfPath(ExplodedNodeSet &S);
141  void GenerateCallExitNode(ExplodedNode *N);
142
143  /// ViewGraph - Visualize the ExplodedGraph created by executing the
144  ///  simulation.
145  void ViewGraph(bool trim = false);
146
147  void ViewGraph(ExplodedNode** Beg, ExplodedNode** End);
148
149  /// getInitialState - Return the initial state used for the root vertex
150  ///  in the ExplodedGraph.
151  ProgramStateRef getInitialState(const LocationContext *InitLoc);
152
153  ExplodedGraph& getGraph() { return G; }
154  const ExplodedGraph& getGraph() const { return G; }
155
156  /// \brief Run the analyzer's garbage collection - remove dead symbols and
157  /// bindings from the state.
158  ///
159  /// Checkers can participate in this process with two callbacks:
160  /// \c checkLiveSymbols and \c checkDeadSymbols. See the CheckerDocumentation
161  /// class for more information.
162  ///
163  /// \param Node The predecessor node, from which the processing should start.
164  /// \param Out The returned set of output nodes.
165  /// \param ReferenceStmt The statement which is about to be processed.
166  ///        Everything needed for this statement should be considered live.
167  ///        A null statement means that everything in child LocationContexts
168  ///        is dead.
169  /// \param LC The location context of the \p ReferenceStmt. A null location
170  ///        context means that we have reached the end of analysis and that
171  ///        all statements and local variables should be considered dead.
172  /// \param DiagnosticStmt Used as a location for any warnings that should
173  ///        occur while removing the dead (e.g. leaks). By default, the
174  ///        \p ReferenceStmt is used.
175  /// \param K Denotes whether this is a pre- or post-statement purge. This
176  ///        must only be ProgramPoint::PostStmtPurgeDeadSymbolsKind if an
177  ///        entire location context is being cleared, in which case the
178  ///        \p ReferenceStmt must either be a ReturnStmt or \c NULL. Otherwise,
179  ///        it must be ProgramPoint::PreStmtPurgeDeadSymbolsKind (the default)
180  ///        and \p ReferenceStmt must be valid (non-null).
181  void removeDead(ExplodedNode *Node, ExplodedNodeSet &Out,
182            const Stmt *ReferenceStmt, const LocationContext *LC,
183            const Stmt *DiagnosticStmt = 0,
184            ProgramPoint::Kind K = ProgramPoint::PreStmtPurgeDeadSymbolsKind);
185
186  /// processCFGElement - Called by CoreEngine. Used to generate new successor
187  ///  nodes by processing the 'effects' of a CFG element.
188  void processCFGElement(const CFGElement E, ExplodedNode *Pred,
189                         unsigned StmtIdx, NodeBuilderContext *Ctx);
190
191  void ProcessStmt(const CFGStmt S, ExplodedNode *Pred);
192
193  void ProcessInitializer(const CFGInitializer I, ExplodedNode *Pred);
194
195  void ProcessImplicitDtor(const CFGImplicitDtor D, ExplodedNode *Pred);
196
197  void ProcessAutomaticObjDtor(const CFGAutomaticObjDtor D,
198                               ExplodedNode *Pred, ExplodedNodeSet &Dst);
199  void ProcessBaseDtor(const CFGBaseDtor D,
200                       ExplodedNode *Pred, ExplodedNodeSet &Dst);
201  void ProcessMemberDtor(const CFGMemberDtor D,
202                         ExplodedNode *Pred, ExplodedNodeSet &Dst);
203  void ProcessTemporaryDtor(const CFGTemporaryDtor D,
204                            ExplodedNode *Pred, ExplodedNodeSet &Dst);
205
206  /// Called by CoreEngine when processing the entrance of a CFGBlock.
207  virtual void processCFGBlockEntrance(const BlockEdge &L,
208                                       NodeBuilderWithSinks &nodeBuilder,
209                                       ExplodedNode *Pred);
210
211  /// ProcessBranch - Called by CoreEngine.  Used to generate successor
212  ///  nodes by processing the 'effects' of a branch condition.
213  void processBranch(const Stmt *Condition, const Stmt *Term,
214                     NodeBuilderContext& BuilderCtx,
215                     ExplodedNode *Pred,
216                     ExplodedNodeSet &Dst,
217                     const CFGBlock *DstT,
218                     const CFGBlock *DstF);
219
220  /// processIndirectGoto - Called by CoreEngine.  Used to generate successor
221  ///  nodes by processing the 'effects' of a computed goto jump.
222  void processIndirectGoto(IndirectGotoNodeBuilder& builder);
223
224  /// ProcessSwitch - Called by CoreEngine.  Used to generate successor
225  ///  nodes by processing the 'effects' of a switch statement.
226  void processSwitch(SwitchNodeBuilder& builder);
227
228  /// ProcessEndPath - Called by CoreEngine.  Used to generate end-of-path
229  ///  nodes when the control reaches the end of a function.
230  void processEndOfFunction(NodeBuilderContext& BC,
231                            ExplodedNode *Pred);
232
233  /// Remove dead bindings/symbols before exiting a function.
234  void removeDeadOnEndOfFunction(NodeBuilderContext& BC,
235                                 ExplodedNode *Pred,
236                                 ExplodedNodeSet &Dst);
237
238  /// Generate the entry node of the callee.
239  void processCallEnter(CallEnter CE, ExplodedNode *Pred);
240
241  /// Generate the sequence of nodes that simulate the call exit and the post
242  /// visit for CallExpr.
243  void processCallExit(ExplodedNode *Pred);
244
245  /// Called by CoreEngine when the analysis worklist has terminated.
246  void processEndWorklist(bool hasWorkRemaining);
247
248  /// evalAssume - Callback function invoked by the ConstraintManager when
249  ///  making assumptions about state values.
250  ProgramStateRef processAssume(ProgramStateRef state, SVal cond,bool assumption);
251
252  /// wantsRegionChangeUpdate - Called by ProgramStateManager to determine if a
253  ///  region change should trigger a processRegionChanges update.
254  bool wantsRegionChangeUpdate(ProgramStateRef state);
255
256  /// processRegionChanges - Called by ProgramStateManager whenever a change is made
257  ///  to the store. Used to update checkers that track region values.
258  ProgramStateRef
259  processRegionChanges(ProgramStateRef state,
260                       const StoreManager::InvalidatedSymbols *invalidated,
261                       ArrayRef<const MemRegion *> ExplicitRegions,
262                       ArrayRef<const MemRegion *> Regions,
263                       const CallEvent *Call);
264
265  /// printState - Called by ProgramStateManager to print checker-specific data.
266  void printState(raw_ostream &Out, ProgramStateRef State,
267                  const char *NL, const char *Sep);
268
269  virtual ProgramStateManager& getStateManager() { return StateMgr; }
270
271  StoreManager& getStoreManager() { return StateMgr.getStoreManager(); }
272
273  ConstraintManager& getConstraintManager() {
274    return StateMgr.getConstraintManager();
275  }
276
277  // FIXME: Remove when we migrate over to just using SValBuilder.
278  BasicValueFactory& getBasicVals() {
279    return StateMgr.getBasicVals();
280  }
281
282  // FIXME: Remove when we migrate over to just using ValueManager.
283  SymbolManager& getSymbolManager() { return SymMgr; }
284  const SymbolManager& getSymbolManager() const { return SymMgr; }
285
286  // Functions for external checking of whether we have unfinished work
287  bool wasBlocksExhausted() const { return Engine.wasBlocksExhausted(); }
288  bool hasEmptyWorkList() const { return !Engine.getWorkList()->hasWork(); }
289  bool hasWorkRemaining() const { return Engine.hasWorkRemaining(); }
290
291  const CoreEngine &getCoreEngine() const { return Engine; }
292
293public:
294  /// Visit - Transfer function logic for all statements.  Dispatches to
295  ///  other functions that handle specific kinds of statements.
296  void Visit(const Stmt *S, ExplodedNode *Pred, ExplodedNodeSet &Dst);
297
298  /// VisitArraySubscriptExpr - Transfer function for array accesses.
299  void VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *Ex,
300                                   ExplodedNode *Pred,
301                                   ExplodedNodeSet &Dst);
302
303  /// VisitGCCAsmStmt - Transfer function logic for inline asm.
304  void VisitGCCAsmStmt(const GCCAsmStmt *A, ExplodedNode *Pred,
305                       ExplodedNodeSet &Dst);
306
307  /// VisitMSAsmStmt - Transfer function logic for MS inline asm.
308  void VisitMSAsmStmt(const MSAsmStmt *A, ExplodedNode *Pred,
309                      ExplodedNodeSet &Dst);
310
311  /// VisitBlockExpr - Transfer function logic for BlockExprs.
312  void VisitBlockExpr(const BlockExpr *BE, ExplodedNode *Pred,
313                      ExplodedNodeSet &Dst);
314
315  /// VisitBinaryOperator - Transfer function logic for binary operators.
316  void VisitBinaryOperator(const BinaryOperator* B, ExplodedNode *Pred,
317                           ExplodedNodeSet &Dst);
318
319
320  /// VisitCall - Transfer function for function calls.
321  void VisitCallExpr(const CallExpr *CE, ExplodedNode *Pred,
322                     ExplodedNodeSet &Dst);
323
324  /// VisitCast - Transfer function logic for all casts (implicit and explicit).
325  void VisitCast(const CastExpr *CastE, const Expr *Ex, ExplodedNode *Pred,
326                ExplodedNodeSet &Dst);
327
328  /// VisitCompoundLiteralExpr - Transfer function logic for compound literals.
329  void VisitCompoundLiteralExpr(const CompoundLiteralExpr *CL,
330                                ExplodedNode *Pred, ExplodedNodeSet &Dst);
331
332  /// Transfer function logic for DeclRefExprs and BlockDeclRefExprs.
333  void VisitCommonDeclRefExpr(const Expr *DR, const NamedDecl *D,
334                              ExplodedNode *Pred, ExplodedNodeSet &Dst);
335
336  /// VisitDeclStmt - Transfer function logic for DeclStmts.
337  void VisitDeclStmt(const DeclStmt *DS, ExplodedNode *Pred,
338                     ExplodedNodeSet &Dst);
339
340  /// VisitGuardedExpr - Transfer function logic for ?, __builtin_choose
341  void VisitGuardedExpr(const Expr *Ex, const Expr *L, const Expr *R,
342                        ExplodedNode *Pred, ExplodedNodeSet &Dst);
343
344  void VisitInitListExpr(const InitListExpr *E, ExplodedNode *Pred,
345                         ExplodedNodeSet &Dst);
346
347  /// VisitLogicalExpr - Transfer function logic for '&&', '||'
348  void VisitLogicalExpr(const BinaryOperator* B, ExplodedNode *Pred,
349                        ExplodedNodeSet &Dst);
350
351  /// VisitMemberExpr - Transfer function for member expressions.
352  void VisitMemberExpr(const MemberExpr *M, ExplodedNode *Pred,
353                           ExplodedNodeSet &Dst);
354
355  /// Transfer function logic for ObjCAtSynchronizedStmts.
356  void VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S,
357                                   ExplodedNode *Pred, ExplodedNodeSet &Dst);
358
359  /// Transfer function logic for computing the lvalue of an Objective-C ivar.
360  void VisitLvalObjCIvarRefExpr(const ObjCIvarRefExpr *DR, ExplodedNode *Pred,
361                                ExplodedNodeSet &Dst);
362
363  /// VisitObjCForCollectionStmt - Transfer function logic for
364  ///  ObjCForCollectionStmt.
365  void VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S,
366                                  ExplodedNode *Pred, ExplodedNodeSet &Dst);
367
368  void VisitObjCMessage(const ObjCMessageExpr *ME, ExplodedNode *Pred,
369                        ExplodedNodeSet &Dst);
370
371  /// VisitReturnStmt - Transfer function logic for return statements.
372  void VisitReturnStmt(const ReturnStmt *R, ExplodedNode *Pred,
373                       ExplodedNodeSet &Dst);
374
375  /// VisitOffsetOfExpr - Transfer function for offsetof.
376  void VisitOffsetOfExpr(const OffsetOfExpr *Ex, ExplodedNode *Pred,
377                         ExplodedNodeSet &Dst);
378
379  /// VisitUnaryExprOrTypeTraitExpr - Transfer function for sizeof.
380  void VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *Ex,
381                              ExplodedNode *Pred, ExplodedNodeSet &Dst);
382
383  /// VisitUnaryOperator - Transfer function logic for unary operators.
384  void VisitUnaryOperator(const UnaryOperator* B, ExplodedNode *Pred,
385                          ExplodedNodeSet &Dst);
386
387  /// Handle ++ and -- (both pre- and post-increment).
388  void VisitIncrementDecrementOperator(const UnaryOperator* U,
389                                       ExplodedNode *Pred,
390                                       ExplodedNodeSet &Dst);
391
392  void VisitCXXCatchStmt(const CXXCatchStmt *CS, ExplodedNode *Pred,
393                         ExplodedNodeSet &Dst);
394
395  void VisitCXXThisExpr(const CXXThisExpr *TE, ExplodedNode *Pred,
396                        ExplodedNodeSet & Dst);
397
398  void VisitCXXConstructExpr(const CXXConstructExpr *E, ExplodedNode *Pred,
399                             ExplodedNodeSet &Dst);
400
401  void VisitCXXDestructor(QualType ObjectType, const MemRegion *Dest,
402                          const Stmt *S, bool IsBaseDtor,
403                          ExplodedNode *Pred, ExplodedNodeSet &Dst);
404
405  void VisitCXXNewExpr(const CXXNewExpr *CNE, ExplodedNode *Pred,
406                       ExplodedNodeSet &Dst);
407
408  void VisitCXXDeleteExpr(const CXXDeleteExpr *CDE, ExplodedNode *Pred,
409                          ExplodedNodeSet &Dst);
410
411  /// Create a C++ temporary object for an rvalue.
412  void CreateCXXTemporaryObject(const MaterializeTemporaryExpr *ME,
413                                ExplodedNode *Pred,
414                                ExplodedNodeSet &Dst);
415
416  /// evalEagerlyAssumeBinOpBifurcation - Given the nodes in 'Src', eagerly assume symbolic
417  ///  expressions of the form 'x != 0' and generate new nodes (stored in Dst)
418  ///  with those assumptions.
419  void evalEagerlyAssumeBinOpBifurcation(ExplodedNodeSet &Dst, ExplodedNodeSet &Src,
420                         const Expr *Ex);
421
422  std::pair<const ProgramPointTag *, const ProgramPointTag*>
423    geteagerlyAssumeBinOpBifurcationTags();
424
425  SVal evalMinus(SVal X) {
426    return X.isValid() ? svalBuilder.evalMinus(cast<NonLoc>(X)) : X;
427  }
428
429  SVal evalComplement(SVal X) {
430    return X.isValid() ? svalBuilder.evalComplement(cast<NonLoc>(X)) : X;
431  }
432
433public:
434
435  SVal evalBinOp(ProgramStateRef state, BinaryOperator::Opcode op,
436                 NonLoc L, NonLoc R, QualType T) {
437    return svalBuilder.evalBinOpNN(state, op, L, R, T);
438  }
439
440  SVal evalBinOp(ProgramStateRef state, BinaryOperator::Opcode op,
441                 NonLoc L, SVal R, QualType T) {
442    return R.isValid() ? svalBuilder.evalBinOpNN(state,op,L, cast<NonLoc>(R), T) : R;
443  }
444
445  SVal evalBinOp(ProgramStateRef ST, BinaryOperator::Opcode Op,
446                 SVal LHS, SVal RHS, QualType T) {
447    return svalBuilder.evalBinOp(ST, Op, LHS, RHS, T);
448  }
449
450protected:
451  /// evalBind - Handle the semantics of binding a value to a specific location.
452  ///  This method is used by evalStore, VisitDeclStmt, and others.
453  void evalBind(ExplodedNodeSet &Dst, const Stmt *StoreE, ExplodedNode *Pred,
454                SVal location, SVal Val, bool atDeclInit = false,
455                const ProgramPoint *PP = 0);
456
457public:
458  // FIXME: 'tag' should be removed, and a LocationContext should be used
459  // instead.
460  // FIXME: Comment on the meaning of the arguments, when 'St' may not
461  // be the same as Pred->state, and when 'location' may not be the
462  // same as state->getLValue(Ex).
463  /// Simulate a read of the result of Ex.
464  void evalLoad(ExplodedNodeSet &Dst,
465                const Expr *NodeEx,  /* Eventually will be a CFGStmt */
466                const Expr *BoundExpr,
467                ExplodedNode *Pred,
468                ProgramStateRef St,
469                SVal location,
470                const ProgramPointTag *tag = 0,
471                QualType LoadTy = QualType());
472
473  // FIXME: 'tag' should be removed, and a LocationContext should be used
474  // instead.
475  void evalStore(ExplodedNodeSet &Dst, const Expr *AssignE, const Expr *StoreE,
476                 ExplodedNode *Pred, ProgramStateRef St, SVal TargetLV, SVal Val,
477                 const ProgramPointTag *tag = 0);
478
479  /// \brief Create a new state in which the call return value is binded to the
480  /// call origin expression.
481  ProgramStateRef bindReturnValue(const CallEvent &Call,
482                                  const LocationContext *LCtx,
483                                  ProgramStateRef State);
484
485  /// Evaluate a call, running pre- and post-call checks and allowing checkers
486  /// to be responsible for handling the evaluation of the call itself.
487  void evalCall(ExplodedNodeSet &Dst, ExplodedNode *Pred,
488                const CallEvent &Call);
489
490  /// \brief Default implementation of call evaluation.
491  void defaultEvalCall(NodeBuilder &B, ExplodedNode *Pred,
492                       const CallEvent &Call);
493private:
494  void evalLoadCommon(ExplodedNodeSet &Dst,
495                      const Expr *NodeEx,  /* Eventually will be a CFGStmt */
496                      const Expr *BoundEx,
497                      ExplodedNode *Pred,
498                      ProgramStateRef St,
499                      SVal location,
500                      const ProgramPointTag *tag,
501                      QualType LoadTy);
502
503  // FIXME: 'tag' should be removed, and a LocationContext should be used
504  // instead.
505  void evalLocation(ExplodedNodeSet &Dst,
506                    const Stmt *NodeEx, /* This will eventually be a CFGStmt */
507                    const Stmt *BoundEx,
508                    ExplodedNode *Pred,
509                    ProgramStateRef St, SVal location,
510                    const ProgramPointTag *tag, bool isLoad);
511
512  /// Count the stack depth and determine if the call is recursive.
513  void examineStackFrames(const Decl *D, const LocationContext *LCtx,
514                          bool &IsRecursive, unsigned &StackDepth);
515
516  bool shouldInlineDecl(const Decl *D, ExplodedNode *Pred);
517  bool inlineCall(const CallEvent &Call, const Decl *D, NodeBuilder &Bldr,
518                  ExplodedNode *Pred, ProgramStateRef State);
519
520  /// \brief Conservatively evaluate call by invalidating regions and binding
521  /// a conjured return value.
522  void conservativeEvalCall(const CallEvent &Call, NodeBuilder &Bldr,
523                            ExplodedNode *Pred, ProgramStateRef State);
524
525  /// \brief Either inline or process the call conservatively (or both), based
526  /// on DynamicDispatchBifurcation data.
527  void BifurcateCall(const MemRegion *BifurReg,
528                     const CallEvent &Call, const Decl *D, NodeBuilder &Bldr,
529                     ExplodedNode *Pred);
530
531  bool replayWithoutInlining(ExplodedNode *P, const LocationContext *CalleeLC);
532};
533
534/// Traits for storing the call processing policy inside GDM.
535/// The GDM stores the corresponding CallExpr pointer.
536// FIXME: This does not use the nice trait macros because it must be accessible
537// from multiple translation units.
538struct ReplayWithoutInlining{};
539template <>
540struct ProgramStateTrait<ReplayWithoutInlining> :
541  public ProgramStatePartialTrait<void*> {
542  static void *GDMIndex() { static int index = 0; return &index; }
543};
544
545} // end ento namespace
546
547} // end clang namespace
548
549#endif
550