Changes

Summary

1. Handle expressions with non-literal types like ignored expressions if we are supposed to continue evaluating them. Also fix a crash casting a derived nullptr to a virtual base.

Revision 301785 by nicholas: Handle expressions with non-literal types like ignored expressions if we are supposed to continue evaluating them. Also fix a crash casting a derived nullptr to a virtual base.
Change Type	Path in Repository	Path in Workspace
	/cfe/trunk/lib/AST/ExprConstant.cpp (diff)	llvm-revision.src/cfe/trunk/lib/AST/ExprConstant.cpp
	/cfe/trunk/test/Sema/integer-overflow.c (diff)	llvm-revision.src/cfe/trunk/test/Sema/integer-overflow.c
	/cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp (diff)	llvm-revision.src/cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp