https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70651
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-04-14 CC| |jakub at gcc dot gnu.org Target Milestone|--- |6.0 Ever confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Started with r223286. I wouldn't call this valid, for valid code the type needs to be va_list and there needs to be va_start that initializes the va_list object (or va_copy) and corresponding va_end.