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Fixes a potential crash in rewriter when sending message 

to 'super'.

llvm-svn: 116928
This commit is contained in:
Fariborz Jahanian 2010-10-20 16:07:20 +00:00
parent dc47d592e7
commit bb40ea42e3
1 changed files with 17 additions and 12 deletions
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29
clang/lib/Rewrite/RewriteObjC.cpp
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@ -1250,11 +1250,6 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitSetter(BinaryOperator *BinOp, Expr *
llvm::SmallVector<Expr *, 1> ExprVec;
ExprVec.push_back(newStmt);
if (Expr *Exp = dyn_cast<Expr>(Receiver))
if (PropGetters[Exp])
// This allows us to handle chain/nested property/implicit getters.
Receiver = PropGetters[Exp];
ObjCMessageExpr *MsgExpr;
if (Super)
MsgExpr = ObjCMessageExpr::Create(*Context,
@ -1266,7 +1261,15 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitSetter(BinaryOperator *BinOp, Expr *
Sel, OMD,
&ExprVec[0], 1,
/*FIXME:*/SourceLocation());
else
else {
// FIXME. Refactor this into common code with that in
// RewritePropertyOrImplicitGetter
assert(Receiver && "RewritePropertyOrImplicitSetter - null Receiver");
if (Expr *Exp = dyn_cast<Expr>(Receiver))
if (PropGetters[Exp])
// This allows us to handle chain/nested property/implicit getters.
Receiver = PropGetters[Exp];
MsgExpr = ObjCMessageExpr::Create(*Context,
Ty.getNonReferenceType(),
/*FIXME: */SourceLocation(),
@ -1274,6 +1277,7 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitSetter(BinaryOperator *BinOp, Expr *
Sel, OMD,
&ExprVec[0], 1,
/*FIXME:*/SourceLocation());
}
Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);
// Now do the actual rewrite.
@ -1325,11 +1329,6 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitGetter(Expr *PropOrGetterRefExpr) {
assert (OMD && "RewritePropertyOrImplicitGetter - OMD is null");
if (Expr *Exp = dyn_cast<Expr>(Receiver))
if (PropGetters[Exp])
// This allows us to handle chain/nested property/implicit getters.
Receiver = PropGetters[Exp];
ObjCMessageExpr *MsgExpr;
if (Super)
MsgExpr = ObjCMessageExpr::Create(*Context,
@ -1341,7 +1340,12 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitGetter(Expr *PropOrGetterRefExpr) {
Sel, OMD,
0, 0,
/*FIXME:*/SourceLocation());
else
else {
assert (Receiver && "RewritePropertyOrImplicitGetter - Receiver is null");
if (Expr *Exp = dyn_cast<Expr>(Receiver))
if (PropGetters[Exp])
// This allows us to handle chain/nested property/implicit getters.
Receiver = PropGetters[Exp];
MsgExpr = ObjCMessageExpr::Create(*Context,
Ty.getNonReferenceType(),
/*FIXME:*/SourceLocation(),
@ -1349,6 +1353,7 @@ Stmt *RewriteObjC::RewritePropertyOrImplicitGetter(Expr *PropOrGetterRefExpr) {
Sel, OMD,
0, 0,
/*FIXME:*/SourceLocation());
}
Stmt *ReplacingStmt = SynthMessageExpr(MsgExpr);