Re: [PATCH v4 0/3] MR7748: ucrtbase: Add cexp() implementation.

[Bernhard Übelacker (＠bernhardu)]

On Wed Jun  4 20:21:59 2025 +0000, Bernhard Übelacker wrote:
> Hello @dlehman25, I noticed the test pattern page shows following tests
> starting to fail since 2025-05-28:
> - [d3dcompiler_42:hlsl_d3d9](https://test.winehq.org/data/patterns.html#d3dcompiler_42:hlsl_d3d9)
> - [d3dcompiler_43:hlsl_d3d9](https://test.winehq.org/data/patterns.html#d3dcompiler_43:hlsl_d3d9)
> - [d3dcompiler_46:hlsl_d3d9](https://test.winehq.org/data/patterns.html#d3dcompiler_46:hlsl_d3d9)
> - [d3dcompiler_47:hlsl_d3d9](https://test.winehq.org/data/patterns.html#d3dcompiler_47:hlsl_d3d9)
>
> A git bisect led me to this merge request containing this commit:
> 15485e6dd9be152286f08b3a3f6cf42895f3b377 is the first broken commit
> commit 15485e6dd9be152286f08b3a3f6cf42895f3b377
> Author: Daniel Lehman <[e-mail]>
> Date:   Fri Apr 25 21:45:19 2025 -0700
>     msvcr120: Add cexp() implementation.
>
> (git bisect needed a clean build each time, so ccache helps a lot. Only
> visible with a GCC-mingw build.)
> I tried to further reduce it and think it is related with the addition
> of `-fno-builtin` to `libs/musl`, can you confirm this finding?

As changing EXTRADEFS causes no immediate rebuild, I manually removed object files to find the object file, which causes test to fail.
After having `libs/musl/src/math/__rem_pio2.c` rebuilt this way the test started to fail.