objc-arc: Diagnose when captured variable in block literals
require destruction and there is possibility of that without
construction. Thanks Johnm for review and suggestions offline.
// rdar://9535237.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134906 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed