38 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <system_error>10 11// class error_code12 13// explicit operator bool() const;14 15#include <system_error>16#include <cassert>17#include <string>18#include <type_traits>19 20#include "test_macros.h"21 22int main(int, char**)23{24 static_assert(std::is_constructible<bool, std::error_code>::value, "");25 static_assert(!std::is_convertible<std::error_code, bool>::value, "");26 27 {28 const std::error_code ec(6, std::generic_category());29 assert(static_cast<bool>(ec));30 }31 {32 const std::error_code ec(0, std::generic_category());33 assert(!static_cast<bool>(ec));34 }35 36 return 0;37}38