__builtin_unreachable ( ) on Windows #45
Description
On Windows the function void __builtin_unreachable ( ) is undefined, and therefor the code is not functional with cl.exe. The below code snippet makes the code compile and does the 'right' thing:
#if defined( _WIN32 ) && !( defined( __clang__ ) || defined( __GNUC__ ) )
#pragma warning( disable : 4645 ) // suppress warning that non-returning function returns.
[[noreturn]] static void __builtin_unreachable ( ) noexcept { return; /* intentional */ }
#pragma warning( default : 4645 )
#endif
Please add the above to master.
PS: I decided to wrap the library and fix the problem at the same time, also, as soon as C++20 is available, I can just delete the header and the STL will kick in automatically everywhere.
// MIT License
//
// Copyright (c) 2020 degski
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// SOFTWARE.
#pragma once
// <static_vector>
#if defined( _WIN32 ) && !( defined( __clang__ ) || defined( __GNUC__ ) )
# pragma warning( disable : 4645 ) // suppress warning that non-returning function returns.
[[noreturn]] static void __builtin_unreachable ( ) noexcept { return; /* intentional */ }
# pragma warning( default : 4645 )
#endif
#include "experimental/fixed_capacity_vector"
namespace std {
template<typename Type, std::size_t Size>
using static_vector = experimental::fixed_capacity_vector<Type, Size>;
}