[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 #13 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Thu Dec  1 03:03:55 2016
New Revision: 243093

URL: https://gcc.gnu.org/viewcvs?rev=243093&root=gcc&view=rev
Log:
        PR libstdc++/71500
        * include/bits/regex.h (basic_regex::basic_regex): Use ECMAScript
        when the syntax is not specified.
        * include/bits/regex_compiler.h (_RegexTranslator,
        _RegexTranslatorBase): Partially support icase in ranges.
        * include/bits/regex_compiler.tcc (_BracketMatcher::_M_apply):
        Refactor _M_apply to make the control flow easier to follow, and
        call _M_translator._M_match_range as added previously.
        * testsuite/28_regex/traits/char/icase.cc: Add new tests.
        * testsuite/28_regex/traits/char/user_defined.cc: Add new tests.

Added:
    trunk/libstdc++-v3/testsuite/28_regex/traits/char/icase.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/regex.h
    trunk/libstdc++-v3/include/bits/regex_compiler.h
    trunk/libstdc++-v3/include/bits/regex_compiler.tcc
    trunk/libstdc++-v3/testsuite/28_regex/traits/char/user_defined.cc