https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112922
--- Comment #2 from Richard Sandiford <rsandifo at gcc dot gnu.org> --- I don't remember there being a deliberate bug fix in that patch, but there were some others later. I suppose the optimistic case is that this first went latent and then was fixed “properly” afterwards. But it could just be latent.