aaron.ballman marked an inline comment as done.
aaron.ballman added a comment.

In D122983#3426534 <https://reviews.llvm.org/D122983#3426534>, @paulwalker-arm 
wrote:

> Please consider this "AArch64 folks speaking up".  What are your plans here 
> exactly? I have no issue with adding `-std=c99` to the RUN lines, but "remove 
> the // expected-warning comments" sounds like a significant loss of test 
> coverage.

CodeGen tests don't typically add `-verify` unless the diagnostic is generated 
by the CodeGen library, so if removing the `expected-warning` lines loses test 
coverage, that speaks to a lack of test coverage in Sema. But what, exactly, 
are these tests trying to validate? We have Sema tests which test the behavior 
of "do we want to diagnose this as an implicit declaration or not", so I don't 
see these lines adding any value to the tests.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122983/new/

https://reviews.llvm.org/D122983

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