[Bug libstdc++/79511] Convertation issues in std::codecvt_utf8_utf16

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79511

--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Mar 16 15:27:45 2017
New Revision: 246199

URL: https://gcc.gnu.org/viewcvs?rev=246199&root=gcc&view=rev
Log:
PR libstdc++/79511 fix endianness of UTF-16 data

        PR libstdc++/79511
        * src/c++11/codecvt.cc (write_utf16_code_point): Don't write 0xffff
        as a surrogate pair.
        (__codecvt_utf8_utf16_base<char32_t>::do_in): Use native endianness
        for internal representation.
        (__codecvt_utf8_utf16_base<wchar_t>::do_in): Likewise.
        * testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc: New test.

Added:
    trunk/libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/src/c++11/codecvt.cc