[Bug c/65244] Bogus -Wmaybe-uninitialized warning with posix_memalign() and -Og

[ulfalizer at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65244

--- Comment #6 from Ulf Magnusson <ulfalizer at gmail dot com> ---
Comment on attachment 34894
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34894
-Wmaybe-uninitialized-warning with -Og with GCC 4.9.1

void exit(int __status) __attribute__ ((__noreturn__));
int posix_memalign(void **__memptr, __SIZE_TYPE__ __alignment, __SIZE_TYPE__
__size);

void *f(void) {
    void *ptr;

    if (posix_memalign(&ptr, 16, 256) != 0)
        exit(1);

    return ptr;
}