| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <iostream> |
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| 10 | |
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| 11 | // wostream wcerr; |
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| 12 | |
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| 13 | // UNSUPPORTED: no-wide-characters |
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| 14 | |
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| 15 | // RUN: %{build} |
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| 16 | // RUN: %{exec} %t.exe 2> %t.actual |
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| 17 | // RUN: echo -n zzzz > %t.expected |
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| 18 | // RUN: diff %t.expected %t.actual |
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| 19 | |
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| 20 | #include <iostream> |
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| 21 | |
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| 22 | struct custom_codecvt : std::codecvt<wchar_t, char, std::mbstate_t> { |
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| 23 | using base = std::codecvt<wchar_t, char, std::mbstate_t>; |
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| 24 | protected: |
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| 25 | result do_out(std::mbstate_t&, const wchar_t *from, const wchar_t *from_end, |
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| 26 | const wchar_t *&from_next, char *to, char *to_end, char *&to_next) const { |
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| 27 | while (from != from_end && to != to_end) { |
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| 28 | ++from; |
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| 29 | *to++ = 'z'; |
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| 30 | } |
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| 31 | from_next = from; |
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| 32 | to_next = to; |
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| 33 | return ok; |
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| 34 | } |
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| 35 | }; |
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| 36 | |
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| 37 | int main(int, char**) { |
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| 38 | std::locale loc(std::locale::classic(), new custom_codecvt); |
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| 39 | std::wcerr.imbue(loc: loc); |
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| 40 | std::wcerr << L"1234" ; |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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