317e92a3e8
C++03 didn't support `explicit` conversion operators; but Clang's C++03 mode does, as an extension, so we can use it. This lets us make the conversion explicit in `std::function` (even in '03), and remove some silly metaprogramming in `std::basic_ios`. Drive-by improvements to the tests for these operators, in addition to making sure all these tests also run in `c++03` mode. Differential Revision: https://reviews.llvm.org/D104682
38 lines
975 B
C++
38 lines
975 B
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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// <system_error>
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// class error_code
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// explicit operator bool() const;
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#include <system_error>
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#include <cassert>
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#include <string>
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#include <type_traits>
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#include "test_macros.h"
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int main(int, char**)
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{
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static_assert(std::is_constructible<bool, std::error_code>::value, "");
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static_assert(!std::is_convertible<std::error_code, bool>::value, "");
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{
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const std::error_code ec(6, std::generic_category());
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assert(static_cast<bool>(ec));
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}
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{
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const std::error_code ec(0, std::generic_category());
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assert(!static_cast<bool>(ec));
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}
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return 0;
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}
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