https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102375
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Not allowing spaces there was intentional and has been discussed, please see the https://gcc.gnu.org/legacy-ml/gcc-patches/2019-04/msg00680.html and surrounding threads. As I wrote, if we accept whitespace, it should be done in all places and for all targets, consistency is even more important than whether we allow it or disallow it. So, from this point of view, the r12-4503 change is wrong.
