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Whether wchar_t is signed is implementation-defined

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Peter Dimov
2021-08-21 20:28:47 +03:00
parent f4b3d5dba6
commit df91243a1d
1 changed files with 7 additions and 1 deletions
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8
include/boost/core/lightweight_test.hpp
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@ -181,7 +181,13 @@ inline const void* test_output_impl(std::nullptr_t) { return nullptr; }
inline int test_output_impl( signed char const& v ) { return v; }
inline unsigned test_output_impl( unsigned char const& v ) { return v; }
inline unsigned long test_output_impl( wchar_t const& v ) { return v; }
// Whether wchar_t is signed is implementation-defined
template<bool Signed> struct lwt_long_type {};
template<> struct lwt_long_type<true> { typedef long type; };
template<> struct lwt_long_type<false> { typedef unsigned long type; };
inline lwt_long_type<(static_cast<wchar_t>(-1) < static_cast<wchar_t>(0))>::type test_output_impl( wchar_t const& v ) { return v; }
#if !defined( BOOST_NO_CXX11_CHAR16_T )
inline unsigned long test_output_impl( char16_t const& v ) { return v; }