https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68430
Ville Voutilainen <ville.voutilainen at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |ville.voutilainen at gmail dot com Resolution|--- |FIXED --- Comment #3 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- Our new compiler-powered is_constructible in gcc 8 no longer gives the completely wrong answer; it gives the semi-expected answer even though the standard doesn't require the question to be well-formed. So I'm just adding a test for the behaviour.