dff62f5251
The code has been quite ready for a while now and there are no more ABI breaking papers. So this is a good time to mark the feature as stable. Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D150802
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: no-threads
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// UNSUPPORTED: no-localization
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// TODO FMT This test should not require std::to_chars(floating-point)
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// XFAIL: availability-fp_to_chars-missing
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// <thread>
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// class thread::id
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// template<class charT, class traits>
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// basic_ostream<charT, traits>&
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// operator<<(basic_ostream<charT, traits>& out, thread::id id);
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#include <thread>
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#include <format>
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#include <sstream>
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#include <cassert>
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#include "make_string.h"
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#include "test_macros.h"
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template <class CharT>
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static void test() {
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std::thread::id id0 = std::this_thread::get_id();
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std::basic_ostringstream<CharT> os;
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os << id0;
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#if TEST_STD_VER > 20
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// C++23 added a formatter specialization for thread::id.
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// This changed the requirement of ostream to have a
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// [thread.thread.id]/2
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// The text representation for the character type charT of an object of
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// type thread::id is an unspecified sequence of charT ...
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// This definition is used for both streaming and formatting.
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//
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// Test whether the output is identical.
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std::basic_string<CharT> s = std::format(MAKE_STRING_VIEW(CharT, "{}"), id0);
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assert(s == os.str());
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#endif
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}
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int main(int, char**) {
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test<char>();
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test<wchar_t>();
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#endif
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return 0;
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}
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