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[Bug libstdc++/81468] is_constructible gives the wrong answer for time_point construction
- From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 17 Jul 2017 19:13:46 +0000
- Subject: [Bug libstdc++/81468] is_constructible gives the wrong answer for time_point construction
- Auto-submitted: auto-generated
- References: <bug-81468-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81468
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
It seems that the implementation simply forgot to constrain overload
resolution, since this is the complete definition of the affected constructor:
template<typename _Dur2>
constexpr time_point(const time_point<clock, _Dur2>& __t)
: __d(__t.time_since_epoch())
{ }
The constraints were added by LWG 1177,
http://cplusplus.github.io/LWG/lwg-defects.html#1177