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Add support for noexcept detection via _NOEXCEPT_TYPES_SUPPORTED with msvc.

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See https://github.com/boostorg/type_traits/issues/118#issuecomment-475228526
This commit is contained in:
jzmaddock
2019-03-22 19:25:33 +00:00
parent 7d89ec0426
commit dea6757dbf
1 changed files with 8 additions and 1 deletions
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9
include/boost/type_traits/detail/config.hpp
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@ -94,12 +94,19 @@
# define BOOST_TT_NO_NOEXCEPT_SEPARATE_TYPE
#endif
//
// If we have the SD6 macros (check for __cpp_rvalue_references succeeds), and we don't have __cpp_noexcept_function_type
// If we have the SD6 macros (check for C++11's __cpp_rvalue_references), and we don't have __cpp_noexcept_function_type
// set, then don't treat noexcept functions as seperate types. This is a fix for msvc with the /Zc:noexceptTypes- flag set.
//
#if defined(__cpp_rvalue_references) && !defined(__cpp_noexcept_function_type) && !defined(BOOST_TT_NO_NOEXCEPT_SEPARATE_TYPE)
# define BOOST_TT_NO_NOEXCEPT_SEPARATE_TYPE
#endif
//
// Check MSVC specific macro on older msvc compilers that don't support the SD6 macros, we don't rely on this
// if the SD6 macros *are* available as it appears to be undocumented.
//
#if defined(BOOST_MSVC) && !defined(__cpp_rvalue_references) && !defined(BOOST_TT_NO_NOEXCEPT_SEPARATE_TYPE) && !defined(_NOEXCEPT_TYPES_SUPPORTED)
# define BOOST_TT_NO_NOEXCEPT_SEPARATE_TYPE
#endif
#endif // BOOST_TT_CONFIG_HPP_INCLUDED