e739d54f86
Summary: This patch adds std::any by moving/adapting <experimental/any>. This patch also implements the std::any parts of p0032r3 (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0032r3.pdf) and LWG 2509 (http://cplusplus.github.io/LWG/lwg-defects.html#2509). I plan to push it in a day or two if there are no comments. Reviewers: mclow.lists, EricWF Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D22733 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@278310 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.2 KiB
C++
48 lines
1.2 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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// <any>
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// any() noexcept;
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#include <any>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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#include "any_helpers.h"
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#include "count_new.hpp"
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#if TEST_HAS_BUILTIN_IDENTIFIER(__has_constant_initializer)
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// std::any must have a constexpr default constructor, but it's a non-literal
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// type so we can't create a constexpr variable. This tests that we actually
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// get 'constant initialization'.
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std::any a;
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static_assert(__has_constant_initializer(a),
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"any must be constant initializable");
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#endif
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int main()
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{
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using std::any;
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{
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static_assert(
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std::is_nothrow_default_constructible<any>::value
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, "Must be default constructible"
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);
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}
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{
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DisableAllocationGuard g; ((void)g);
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any const a;
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assertEmpty(a);
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}
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}
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