https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114978
--- Comment #29 from Xi Ruoyao <xry111 at gcc dot gnu.org> --- For 15 r15-7525 is intended for this issue. But I don't know if it's a good idea to backport it, as it's only a workaround, not a proper fix. Could someone try the diff in PR 115842 comment 6 (one time just on the trunk, another with r15-7525 reverted)?