[Bug libstdc++/71500] regex::icase only works on first character in a range

[timshen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71500

--- Comment #16 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Mon Sep 11 19:02:34 2017
New Revision: 251982

URL: https://gcc.gnu.org/viewcvs?rev=251982&root=gcc&view=rev
Log:
        PR libstdc++/71500
        * include/bits/regex_executor.tcc: Support icase in regex_tratis<...>
        for back reference matches.
        * testsuite/28_regex/regression.cc: Test case.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/regex_executor.tcc
    trunk/libstdc++-v3/testsuite/28_regex/regression.cc