Re: gcc and double_u

[Patrick Welche <prlw1%welche.eu@localhost>]

On Thu, Jul 04, 2024 at 10:20:39AM +0100, Patrick Welche wrote:
> The following appeared in gcc head:
> 
> commit 3a873c0a7bc8183de95a6103b507101a25eed413
> Author: liuhongt <hongtao.liu%intel.com@localhost>
> Date:   Thu May 30 14:15:48 2024 +0800
> 
>     Rename double_u with __double_u to avoid pulluting the namespace.
>     
>     gcc/ChangeLog:
>     
>             * config/i386/emmintrin.h (__double_u): Rename from double_u.
>             (_mm_load_sd): Replace double_u with __double_u.
>             (_mm_store_sd): Ditto.
>             (_mm_loadh_pd): Ditto.
>             (_mm_loadl_pd): Ditto.
>             * config/i386/xmmintrin.h (__float_u): Rename from float_u.
>             (_mm_load_ss): Ditto.
>             (_mm_store_ss): Ditto.
> 
> 
> This pollution avoidance achieves a direct hit with our /usr/include/math.h:
> 
> union __double_u {
>         unsigned char __dummy[sizeof(double)];
>         double __val;
> };
> 
> 
> What should we do?

Already fixed!

https://gcc.gnu.org/g:23ab7f632f4f5bae67fb53cf7b18fea7ba7242c4

Cheers,

Patrick