Stefan Reinhold b6c531f7c1 Explicitly check for availability of std::byte (fixes #713) (#714) ... * Explicitly check for availbility of std::byte GCC > 7.3 defines __cpp_lib_byte >= 201603 when std::byte is available. On libc++ std::byte is available since version 5.0. This can be checked with _LIBCPP_VERSION >= 5000. This fixes 713. * Add missing \ in preprocessor check		2018-08-03 10:39:12 -07:00
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gsl	Explicitly check for availability of std::byte (fixes #713) (#714)	2018-08-03 10:39:12 -07:00