[Libc++] Use #pragma push_macro/pop_macro to better handle min/max on Windows
Summary: This patch improves how libc++ handles min/max macros within the headers. Previously libc++ would undef them and emit a warning. This patch changes libc++ to use `#pragma push_macro` to save the macro before undefining it, and `#pragma pop_macro` to restore the macros and the end of the header. Reviewers: mclow.lists, bcraig, compnerd, EricWF Reviewed By: EricWF Subscribers: cfe-commits, krytarowski Differential Revision: https://reviews.llvm.org/D33080 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@304357 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
298
test/libcxx/min_max_macros.sh.cpp
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298
test/libcxx/min_max_macros.sh.cpp
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// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Test that we can include each header in two TU's and link them together.
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// RUN: %compile -fsyntax-only
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// Prevent <ext/hash_map> from generating deprecated warnings for this test.
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#if defined(__DEPRECATED)
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#undef __DEPRECATED
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#endif
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#define TEST_MACROS() static_assert(min() == true && max() == true, "")
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#define min() true
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#define max() true
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// Top level headers
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#include <algorithm>
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TEST_MACROS();
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#include <any>
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TEST_MACROS();
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#include <array>
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TEST_MACROS();
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#ifndef _LIBCPP_HAS_NO_THREADS
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#include <atomic>
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TEST_MACROS();
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#endif
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#include <bitset>
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TEST_MACROS();
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#include <cassert>
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TEST_MACROS();
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#include <ccomplex>
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TEST_MACROS();
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#include <cctype>
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TEST_MACROS();
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#include <cerrno>
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TEST_MACROS();
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#include <cfenv>
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TEST_MACROS();
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#include <cfloat>
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TEST_MACROS();
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#include <chrono>
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TEST_MACROS();
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#include <cinttypes>
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TEST_MACROS();
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#include <ciso646>
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TEST_MACROS();
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#include <climits>
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TEST_MACROS();
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#include <clocale>
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TEST_MACROS();
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#include <cmath>
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TEST_MACROS();
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#include <codecvt>
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TEST_MACROS();
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#include <complex>
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TEST_MACROS();
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#include <complex.h>
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TEST_MACROS();
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#include <condition_variable>
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TEST_MACROS();
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#include <csetjmp>
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TEST_MACROS();
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#include <csignal>
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TEST_MACROS();
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#include <cstdarg>
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TEST_MACROS();
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#include <cstdbool>
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TEST_MACROS();
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#include <cstddef>
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TEST_MACROS();
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#include <cstdint>
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TEST_MACROS();
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#include <cstdio>
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TEST_MACROS();
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#include <cstdlib>
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TEST_MACROS();
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#include <cstring>
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TEST_MACROS();
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#include <ctgmath>
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TEST_MACROS();
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#include <ctime>
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TEST_MACROS();
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#include <ctype.h>
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TEST_MACROS();
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#include <cwchar>
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TEST_MACROS();
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#include <cwctype>
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TEST_MACROS();
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#include <deque>
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TEST_MACROS();
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#include <errno.h>
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TEST_MACROS();
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#include <exception>
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TEST_MACROS();
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#include <float.h>
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TEST_MACROS();
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#include <forward_list>
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TEST_MACROS();
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#include <fstream>
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TEST_MACROS();
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#include <functional>
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TEST_MACROS();
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#ifndef _LIBCPP_HAS_NO_THREADS
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#include <future>
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TEST_MACROS();
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#endif
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#include <initializer_list>
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TEST_MACROS();
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#include <inttypes.h>
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TEST_MACROS();
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#include <iomanip>
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TEST_MACROS();
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#include <ios>
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TEST_MACROS();
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#include <iosfwd>
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TEST_MACROS();
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#include <iostream>
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TEST_MACROS();
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#include <istream>
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TEST_MACROS();
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#include <iterator>
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TEST_MACROS();
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#include <limits>
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TEST_MACROS();
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#include <limits.h>
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TEST_MACROS();
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#include <list>
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TEST_MACROS();
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#include <locale>
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TEST_MACROS();
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#include <locale.h>
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TEST_MACROS();
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#include <map>
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TEST_MACROS();
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#include <math.h>
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TEST_MACROS();
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#include <memory>
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TEST_MACROS();
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#ifndef _LIBCPP_HAS_NO_THREADS
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#include <mutex>
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TEST_MACROS();
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#endif
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#include <new>
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TEST_MACROS();
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#include <numeric>
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TEST_MACROS();
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#include <optional>
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TEST_MACROS();
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#include <ostream>
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TEST_MACROS();
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#include <queue>
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TEST_MACROS();
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#include <random>
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TEST_MACROS();
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#include <ratio>
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TEST_MACROS();
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#include <regex>
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TEST_MACROS();
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#include <scoped_allocator>
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TEST_MACROS();
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#include <set>
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TEST_MACROS();
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#include <setjmp.h>
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TEST_MACROS();
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#ifndef _LIBCPP_HAS_NO_THREADS
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#include <shared_mutex>
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TEST_MACROS();
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#endif
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#include <sstream>
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TEST_MACROS();
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#include <stack>
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TEST_MACROS();
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#include <stdbool.h>
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TEST_MACROS();
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#include <stddef.h>
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TEST_MACROS();
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#include <stdexcept>
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TEST_MACROS();
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#include <stdint.h>
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TEST_MACROS();
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#include <stdio.h>
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TEST_MACROS();
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#include <stdlib.h>
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TEST_MACROS();
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#include <streambuf>
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TEST_MACROS();
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#include <string>
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TEST_MACROS();
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#include <string.h>
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TEST_MACROS();
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#include <string_view>
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TEST_MACROS();
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#include <strstream>
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TEST_MACROS();
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#include <system_error>
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TEST_MACROS();
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#include <tgmath.h>
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TEST_MACROS();
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#ifndef _LIBCPP_HAS_NO_THREADS
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#include <thread>
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TEST_MACROS();
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#endif
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#include <tuple>
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TEST_MACROS();
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#include <typeindex>
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TEST_MACROS();
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#include <typeinfo>
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TEST_MACROS();
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#include <type_traits>
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TEST_MACROS();
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#include <unordered_map>
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TEST_MACROS();
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#include <unordered_set>
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TEST_MACROS();
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#include <utility>
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TEST_MACROS();
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#include <valarray>
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TEST_MACROS();
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#include <variant>
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TEST_MACROS();
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#include <vector>
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TEST_MACROS();
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#include <wchar.h>
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TEST_MACROS();
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#include <wctype.h>
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TEST_MACROS();
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// experimental headers
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#if __cplusplus >= 201103L
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#include <experimental/algorithm>
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TEST_MACROS();
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#include <experimental/any>
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TEST_MACROS();
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#include <experimental/chrono>
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TEST_MACROS();
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#include <experimental/deque>
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TEST_MACROS();
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#include <experimental/dynarray>
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TEST_MACROS();
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#include <experimental/filesystem>
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TEST_MACROS();
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#include <experimental/forward_list>
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TEST_MACROS();
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#include <experimental/functional>
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TEST_MACROS();
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#include <experimental/iterator>
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TEST_MACROS();
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#include <experimental/list>
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TEST_MACROS();
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#include <experimental/map>
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TEST_MACROS();
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#include <experimental/memory_resource>
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TEST_MACROS();
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#include <experimental/numeric>
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TEST_MACROS();
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#include <experimental/optional>
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TEST_MACROS();
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#include <experimental/propagate_const>
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TEST_MACROS();
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#include <experimental/ratio>
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TEST_MACROS();
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#include <experimental/regex>
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TEST_MACROS();
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#include <experimental/set>
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TEST_MACROS();
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#include <experimental/string>
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TEST_MACROS();
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#include <experimental/string_view>
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TEST_MACROS();
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#include <experimental/system_error>
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TEST_MACROS();
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#include <experimental/tuple>
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TEST_MACROS();
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#include <experimental/type_traits>
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TEST_MACROS();
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#include <experimental/unordered_map>
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TEST_MACROS();
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#include <experimental/unordered_set>
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TEST_MACROS();
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#include <experimental/utility>
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TEST_MACROS();
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#include <experimental/vector>
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TEST_MACROS();
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#endif // __cplusplus >= 201103L
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// extended headers
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#include <ext/hash_map>
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TEST_MACROS();
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#include <ext/hash_set>
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TEST_MACROS();
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