https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94771
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |NEW --- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- The fix for Bug 52597 does seem related, see the change to invalid_nonstatic_memfn_p in r197131. I don't know what the MS extension is that requires the t.f syntax to be allowed. Maybe the extension should be disabled in a requires-expression?