https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100920
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > It may not be immediately obvious from my example but the the builtin_alloca > is not the only problem. > > Any malloc/calloc has the same effect. Even if one requires casts at alloc > time, any free will trigger the same warning. > > t_s12 *msg1 = (t_s12)malloc(10); > free(msg1); > > I don't understand what the incompatibility reported is with void pointers. > To my understanding they are type-less and can't be dereferenced. Yes, the compiler treats alloca/malloc/calloc the same for this purpose.
