https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53929 --- Comment #32 from LIU Hao <lh_mouse at 126 dot com> --- AFAICT this is now resolved. Other issues are tracked by different PRs: * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109257 * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119079