1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <iostream>
10 
11 // istream wcerr;
12 
13 // FILE_DEPENDENCIES: ../check-stderr.sh
14 // RUN: %{build}
15 // RUN: %{exec} bash check-stderr.sh "%t.exe" "1234"
16 
17 #include <iostream>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
main(int,char **)22 int main(int, char**) {
23     std::wcerr << L"1234";
24     assert(std::wcerr.flags() & std::ios_base::unitbuf);
25 
26 #ifdef _LIBCPP_HAS_NO_STDOUT
27     assert(std::wcerr.tie() == NULL);
28 #else
29     assert(std::wcerr.tie() == &std::wcout);
30 #endif
31     return 0;
32 }
33