forked from OSchip/llvm-project
41 lines
1.1 KiB
C++
41 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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// <system_error>
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// class error_category
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// constexpr error_category() noexcept;
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#include <system_error>
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#include <type_traits>
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#include <string>
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#include <cassert>
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#if _LIBCPP_STD_VER > 11
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class test1
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: public std::error_category
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{
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public:
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constexpr test1() = default; // won't compile if error_category() is not constexpr
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virtual const char* name() const noexcept {return nullptr;}
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virtual std::string message(int ev) const {return std::string();}
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};
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#endif // _LIBCPP_STD_VER > 11
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int main()
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{
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#if _LIBCPP_STD_VER > 11
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static_assert(std::is_nothrow_default_constructible<test1>::value,
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"error_category() must exist and be noexcept");
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#endif // _LIBCPP_STD_VER > 11
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}
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