https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90264
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Either the function guarantees that *seq will be always non-NULL (at least if the call doesn't return negative), but then there is no point in using out && *out, you can as well just use *out, because out will never be NULL. Or the function doesn't guarantee it and if it is NULL, the code will crash.
