https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106929
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- -std=c89 doesn't mean there aren't any extensions accepted, if you want the compiler to be pedantic, -pedantic or -pedantic-errors are the options to use as documented (the former just warns, the latter errors).