https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111591
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Kewen Lin from comment #13) > Thanks again for the reduced test case and the information! > > I tried to bisect it but encountered some build failures on _Float32 error > etc., through grepping the log I switched to start from r13-2887 (good) to > r13-7206 (bad). > > The bisection shows the culprit commit is r13-3378-gf6c168f8c06047 which was > backported to GCC-12, it seems to match the observation new gcc-12 fail > while gcc-11 pass. Note this change likely triggers a latent issue but it might help analyzing the issue.