[PATCH] D21317: [sanitizer] Allow sanitize coverage w/o sanitizers.

[Kostya Serebryany via cfe-commits]

kcc added a comment.

Can you at least add a compiler-rt test where we ensure that this flag can not be used such that it wil compile but fail to link?

E.g.

  clang -fsanitize-coverage=edge x.c 

should compile *and* link (and run)


Repository:
  rL LLVM

http://reviews.llvm.org/D21317