https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91615
--- Comment #3 from Bernd Edlinger <edlinger at gcc dot gnu.org> --- yes that looks very likely. I was not able to reproduce this particular failure, but you can try out the patch I attached to pr91612 and see if it fixes you problem. I am currently short of test capability and cannot post the patch before I have done another bootstrap/regtest cycle.
