https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70979
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |accepts-invalid Status|UNCONFIRMED |NEW Last reconfirmed| |2016-05-06 CC| |msebor at gcc dot gnu.org Blocks| |55004 Ever confirmed|0 |1 Known to fail| |5.3.0, 6.1.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed. Constexpr functions involving lambdas are not in C++ 14. A proposal to accept the construct was voted in to the next version of the language, C++ 17, at the last C++ meeting (P0170R1 - https://isocpp.org/files/papers/P0170R1.pdf). G++ is ahead of the game on this feature but it should either disable it or diagnose it with a warning in C++ 14 mode. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 [Bug 55004] [meta-bug] constexpr issues