[PATCH] D151834: Include math-errno with fast-math

[Zahira Ammarguellat via Phabricator via cfe-commits]

zahiraam added a comment.

In D151834#4644373 <https://reviews.llvm.org/D151834#4644373>, @aaron.ballman wrote:

> In D151834#4643925 <https://reviews.llvm.org/D151834#4643925>, @uabelho wrote:
>
>> Hi @zahiraam ,
>>
>> I have a couple of downstream testcases that fail with this patch.
>> Before
>>
>>   > clang bbi-86364.c -lm -O3
>>   > ./a.out
>>
>> passed but with the patch the assert in the program fails:
>>
>>   a.out: bbi-86364.c:9: int main(): Assertion `(*__errno_location ()) == 33' failed.
>>
>> Is this as expected?
>>
>> F29200339: bbi-86364.c <https://reviews.llvm.org/F29200339>
>
> This seems unexpected to me and it seems to relate to whether you include errno.h or not: https://godbolt.org/z/EPWzazx9r -- @zahiraam do you have ideas as to what's going on?

I haven't looked at it as I saw that the comment has been deleted. Let me look into it.


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https://reviews.llvm.org/D151834