https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102552
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
No, it's related to fact that:
bool
parse_optimize_options (tree args, bool attr_p)
{
...
/* Build up argv vector. Just in case the string is stored away, use garbage
collected strings. */
vec_safe_truncate (optimize_args, 0);
vec_safe_push (optimize_args, (const char *) NULL);
As seen we push NULL pointer as the first vector element. Why do we do that?
