Only define __cpp_lib_constexpr_char_traits for C++17
commitb2fe5652245759d1a4bf1dc27614f28be76df31b
authorredi <redi@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 15 Jun 2018 15:47:56 +0000 (15 15:47 +0000)
committerredi <redi@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 15 Jun 2018 15:47:56 +0000 (15 15:47 +0000)
tree83f46237d051c9a6461abfe2a408c00e55118ea0
parent6cec91d7d38a86e10626029553a80cd62aaad32e
Only define __cpp_lib_constexpr_char_traits for C++17

* include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Only
define for C++17 and above.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@261634 138bc75d-0d04-0410-961f-82ee72b054a4
libstdc++-v3/ChangeLog
libstdc++-v3/include/bits/char_traits.h