| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <iostream> |
| |
| // wostream wcerr; |
| |
| // UNSUPPORTED: no-wide-characters |
| |
| // RUN: %{build} |
| // RUN: %{exec} %t.exe 2> %t.actual |
| // RUN: echo -n zzzz > %t.expected |
| // RUN: diff %t.expected %t.actual |
| |
| #include <iostream> |
| |
| struct custom_codecvt : std::codecvt<wchar_t, char, std::mbstate_t> { |
| using base = std::codecvt<wchar_t, char, std::mbstate_t>; |
| protected: |
| result do_out(std::mbstate_t&, const wchar_t *from, const wchar_t *from_end, |
| const wchar_t *&from_next, char *to, char *to_end, char *&to_next) const { |
| while (from != from_end && to != to_end) { |
| ++from; |
| *to++ = 'z'; |
| } |
| from_next = from; |
| to_next = to; |
| return ok; |
| } |
| }; |
| |
| int main(int, char**) { |
| std::locale loc(std::locale::classic(), new custom_codecvt); |
| std::wcerr.imbue(loc); |
| std::wcerr << L"1234"; |
| return 0; |
| } |