https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31893
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Daniel Fruzynski from comment #7)
> void __attribute__((const)) func(int* i)
> {
> *i = 44;
> }
You get a warning because you marked this function const, which tells the
compiler it won't modify *i, so you lied to the compiler.
You should not be marking this function const.
