[Bug c/71199] Support overloadable attribute in GNU C front-end

[yuxuanchiadm at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71199

Yu Xuanchi <yuxuanchiadm at 126 dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |yuxuanchiadm at 126 dot com

--- Comment #4 from Yu Xuanchi <yuxuanchiadm at 126 dot com> ---
Trying to implement it.

https://github.com/yuxuanchiadm/gcc/tree/gcc-overloadable-attribute