diff options
| author | John McCall <rjmccall@apple.com> | 2011-09-10 01:16:55 +0000 |
|---|---|---|
| committer | John McCall <rjmccall@apple.com> | 2011-09-10 01:16:55 +0000 |
| commit | dc05b11c67331016473fbc7909827b1b89c9616b (patch) | |
| tree | 65c8e307e0ccdcb67ebba0c530f476d59f87c09f /lib/AST/ExprConstant.cpp | |
| parent | b3321093f6ead084427eb4a6621832fc4ee2f5de (diff) | |
When converting a block pointer to an Objective-C pointer type, extend
the lifetime of the block by copying it to the heap, or else we'll get
a dangling reference because the code working with the non-block-typed
object will not know it needs to copy.
There is some danger here, e.g. with assigning a block literal to an
unsafe variable, but, well, it's an unsafe variable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139451 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/ExprConstant.cpp')
| -rw-r--r-- | lib/AST/ExprConstant.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp index eb35dd7c98..7ae4186423 100644 --- a/lib/AST/ExprConstant.cpp +++ b/lib/AST/ExprConstant.cpp @@ -1830,6 +1830,7 @@ bool IntExprEvaluator::VisitCastExpr(const CastExpr *E) { case CK_ObjCProduceObject: case CK_ObjCConsumeObject: case CK_ObjCReclaimReturnedObject: + case CK_ObjCExtendBlockObject: return false; case CK_LValueToRValue: @@ -2338,6 +2339,7 @@ bool ComplexExprEvaluator::VisitCastExpr(const CastExpr *E) { case CK_ObjCProduceObject: case CK_ObjCConsumeObject: case CK_ObjCReclaimReturnedObject: + case CK_ObjCExtendBlockObject: llvm_unreachable("invalid cast kind for complex value"); case CK_LValueToRValue: |