[Bug c/116767] C const function pointer no code generated (or optimized out)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116767

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This extension is documented:
https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Const-and-Volatile-Functions.html