Quick patch for PR2784, assert genereting debug info for opaque
structure.
 - I'm not sure yet about the behavior, but this at least prevents the
   crash.

Add some asserts on RegionStack usage.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57661 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed