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907c1196a7
Libc++ is used as a system library on macOS and iOS (amongst others). In order for users to be able to compile a binary that is intended to be deployed to an older version of the platform, clang provides the availability attribute <https://clang.llvm.org/docs/AttributeReference.html#availability>_ that can be placed on declarations to describe the lifecycle of a symbol in the library. See docs/DesignDocs/AvailabilityMarkup.rst for more information. Differential Revision: https://reviews.llvm.org/D31739 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302172 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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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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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// XFAIL: with_system_cxx_lib=macosx10.12
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// XFAIL: with_system_cxx_lib=macosx10.11
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// XFAIL: with_system_cxx_lib=macosx10.10
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// XFAIL: with_system_cxx_lib=macosx10.9
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// XFAIL: with_system_cxx_lib=macosx10.7
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// XFAIL: with_system_cxx_lib=macosx10.8
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// <any>
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// void swap(any &, any &) noexcept
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// swap(...) just wraps any::swap(...). That function is tested elsewhere.
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#include <any>
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#include <cassert>
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using std::any;
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using std::any_cast;
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int main()
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{
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{ // test noexcept
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any a;
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static_assert(noexcept(swap(a, a)), "swap(any&, any&) must be noexcept");
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}
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{
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any a1(1);
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any a2(2);
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swap(a1, a2);
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assert(any_cast<int>(a1) == 2);
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assert(any_cast<int>(a2) == 1);
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}
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}
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