r191532 - [analyzer] Allow pre/post-statement checkers for UnaryOperator.
Jordan Rose
jordan_rose at apple.com
Fri Sep 27 09:47:52 PDT 2013
Author: jrose
Date: Fri Sep 27 11:47:52 2013
New Revision: 191532
URL: http://llvm.org/viewvc/llvm-project?rev=191532&view=rev
Log:
[analyzer] Allow pre/post-statement checkers for UnaryOperator.
Found by Arthur Yoo.
Modified:
cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp
Modified: cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp?rev=191532&r1=191531&r2=191532&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp Fri Sep 27 11:47:52 2013
@@ -727,15 +727,23 @@ VisitUnaryExprOrTypeTraitExpr(const Unar
void ExprEngine::VisitUnaryOperator(const UnaryOperator* U,
ExplodedNode *Pred,
ExplodedNodeSet &Dst) {
- StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx);
- switch (U->getOpcode()) {
+ // FIXME: Prechecks eventually go in ::Visit().
+ ExplodedNodeSet CheckedSet;
+ getCheckerManager().runCheckersForPreStmt(CheckedSet, Pred, U, *this);
+
+ ExplodedNodeSet EvalSet;
+ StmtNodeBuilder Bldr(CheckedSet, EvalSet, *currBldrCtx);
+
+ for (ExplodedNodeSet::iterator I = CheckedSet.begin(), E = CheckedSet.end();
+ I != E; ++I) {
+ switch (U->getOpcode()) {
default: {
- Bldr.takeNodes(Pred);
+ Bldr.takeNodes(*I);
ExplodedNodeSet Tmp;
- VisitIncrementDecrementOperator(U, Pred, Tmp);
+ VisitIncrementDecrementOperator(U, *I, Tmp);
Bldr.addNodes(Tmp);
- }
break;
+ }
case UO_Real: {
const Expr *Ex = U->getSubExpr()->IgnoreParens();
@@ -747,10 +755,10 @@ void ExprEngine::VisitUnaryOperator(cons
// For all other types, UO_Real is an identity operation.
assert (U->getType() == Ex->getType());
- ProgramStateRef state = Pred->getState();
- const LocationContext *LCtx = Pred->getLocationContext();
- Bldr.generateNode(U, Pred, state->BindExpr(U, LCtx,
- state->getSVal(Ex, LCtx)));
+ ProgramStateRef state = (*I)->getState();
+ const LocationContext *LCtx = (*I)->getLocationContext();
+ Bldr.generateNode(U, *I, state->BindExpr(U, LCtx,
+ state->getSVal(Ex, LCtx)));
break;
}
@@ -762,10 +770,10 @@ void ExprEngine::VisitUnaryOperator(cons
break;
}
// For all other types, UO_Imag returns 0.
- ProgramStateRef state = Pred->getState();
- const LocationContext *LCtx = Pred->getLocationContext();
+ ProgramStateRef state = (*I)->getState();
+ const LocationContext *LCtx = (*I)->getLocationContext();
SVal X = svalBuilder.makeZeroVal(Ex->getType());
- Bldr.generateNode(U, Pred, state->BindExpr(U, LCtx, X));
+ Bldr.generateNode(U, *I, state->BindExpr(U, LCtx, X));
break;
}
@@ -783,10 +791,10 @@ void ExprEngine::VisitUnaryOperator(cons
// generate an extra node that just propagates the value of the
// subexpression.
const Expr *Ex = U->getSubExpr()->IgnoreParens();
- ProgramStateRef state = Pred->getState();
- const LocationContext *LCtx = Pred->getLocationContext();
- Bldr.generateNode(U, Pred, state->BindExpr(U, LCtx,
- state->getSVal(Ex, LCtx)));
+ ProgramStateRef state = (*I)->getState();
+ const LocationContext *LCtx = (*I)->getLocationContext();
+ Bldr.generateNode(U, *I, state->BindExpr(U, LCtx,
+ state->getSVal(Ex, LCtx)));
break;
}
@@ -795,14 +803,14 @@ void ExprEngine::VisitUnaryOperator(cons
case UO_Not: {
assert (!U->isGLValue());
const Expr *Ex = U->getSubExpr()->IgnoreParens();
- ProgramStateRef state = Pred->getState();
- const LocationContext *LCtx = Pred->getLocationContext();
+ ProgramStateRef state = (*I)->getState();
+ const LocationContext *LCtx = (*I)->getLocationContext();
// Get the value of the subexpression.
SVal V = state->getSVal(Ex, LCtx);
if (V.isUnknownOrUndef()) {
- Bldr.generateNode(U, Pred, state->BindExpr(U, LCtx, V));
+ Bldr.generateNode(U, *I, state->BindExpr(U, LCtx, V));
break;
}
@@ -839,11 +847,13 @@ void ExprEngine::VisitUnaryOperator(cons
state = state->BindExpr(U, LCtx, Result);
break;
}
- Bldr.generateNode(U, Pred, state);
+ Bldr.generateNode(U, *I, state);
break;
}
+ }
}
+ getCheckerManager().runCheckersForPostStmt(Dst, EvalSet, U, *this);
}
void ExprEngine::VisitIncrementDecrementOperator(const UnaryOperator* U,
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