[Bug libstdc++/80187] C++ variant should be trivially copy constructible if possible

[timshen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80187

--- Comment #6 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Tue Jun 27 18:19:03 2017
New Revision: 249706

URL: https://gcc.gnu.org/viewcvs?rev=249706&root=gcc&view=rev
Log:
        PR libstdc++/80187
        * include/std/variant (variant::variant, variant::~variant,
        variant::operator=): Implement triviality forwarding for four
        special member functions.
        * testsuite/20_util/variant/compile.cc: Tests.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/variant
    trunk/libstdc++-v3/testsuite/20_util/variant/compile.cc