Fix for PR4074: allow subscripting non-lvalue arrays in C90 mode.

I wasn't originally going to use this approach, but cases like 
test/Sema/expr-comma.c make things difficult.

llvm-svn: 70096
3 files changed
tree: 1429cd8c5b058ee3ac861345febe1d19288c691d
  1. clang/
  2. llvm/