[Bug libstdc++/65420] Enumerators in std::regex_constants should be constexpr variables instead

[timshen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65420

--- Comment #1 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Sat Mar 28 04:17:12 2015
New Revision: 221750

URL: https://gcc.gnu.org/viewcvs?rev=221750&root=gcc&view=rev
Log:
    PR libstdc++/65420
    * include/bits/regex_constants.h: Use constexpr variables for flags.
    * testsuite/28_regex/constants/constexpr.cc: New testcase.


Added:
    trunk/libstdc++-v3/testsuite/28_regex/constants/constexpr.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/regex_constants.h