https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89029
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Peter Dimov from comment #0) > (This is simplified from an attempt to create a statically-diagnosed assert > facility that would warn when the asserted expression is known to be false: > https://godbolt.org/z/i5SXSd. Would've been cool if it worked.) c.f. https://gcc.gnu.org/ml/libstdc++/2018-03/msg00031.html and the replies