https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113175
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Xi Ruoyao from comment #4) > IIRC the "signed_rep_t = __int128;" case has really detected a compiler bug, > so IMO we shouldn't just disable it. > > Maybe my memory is flawed though. I think it was the opposite. Using `signed rep_t` relied on a compiler bug. When that bug was fixed we had to introduce a typedef for that type. I have no idea why it would make the test slower though.