[Bug libstdc++/64649] regex_traits::lookup_classname() only works with random access iterators

[timshen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64649

--- Comment #5 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Tue Feb  3 08:59:24 2015
New Revision: 220365

URL: https://gcc.gnu.org/viewcvs?rev=220365&root=gcc&view=rev
Log:
    PR libstdc++/64649
    Backported from mainline
    2015-01-22  Tim Shen  <timshen@google.com>

    * include/bits/regex.tcc (regex_traits<>::lookup_collatename,
    regex_traits<>::lookup_classname): Correctly narrow input chars.
    * testsuite/28_regex/traits/wchar_t/user_defined.cc: New testcase.

Modified:
    branches/gcc-4_9-branch/libstdc++-v3/ChangeLog
    branches/gcc-4_9-branch/libstdc++-v3/include/bits/regex.tcc
   
branches/gcc-4_9-branch/libstdc++-v3/testsuite/28_regex/traits/wchar_t/user_defined.cc