88622aabf1
Since stacktrace header is WIP and it's not sure that will be done before LLVM17 update the documentation. When the header is implemented implementing the formatter is trivial, so that can be done quickly afterwards. Implements parts of: - P2693R1 Formatting thread::id and stacktrace Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D144331
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 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
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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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