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Merge pull request #822 from JordanMaples/dev/jomaples/lib-byte-check

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gsl_byte to inspect __cpp_lib_byte
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Jordan Maples [MSFT] 2019-10-25 11:42:01 -07:00 committed by GitHub
commit 9939d5889b
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1 changed files with 5 additions and 3 deletions
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8
include/gsl/gsl_byte
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@ -33,6 +33,8 @@
#include <type_traits>
// VS2017 15.8 added support for the __cpp_lib_byte definition
// To do: drop _HAS_STD_BYTE when support for pre 15.8 expires
#ifdef _MSC_VER
#pragma warning(push)
@ -42,15 +44,15 @@
#ifndef GSL_USE_STD_BYTE
// this tests if we are under MSVC and the standard lib has std::byte and it is enabled
#if defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
#if (defined(_HAS_STD_BYTE) && _HAS_STD_BYTE) || (defined(__cpp_lib_byte) && __cpp_lib_byte >= 201603)
#define GSL_USE_STD_BYTE 1
#else // defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
#else // (defined(_HAS_STD_BYTE) && _HAS_STD_BYTE) || (defined(__cpp_lib_byte) && __cpp_lib_byte >= 201603)
#define GSL_USE_STD_BYTE 0
#endif // defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
#endif // (defined(_HAS_STD_BYTE) && _HAS_STD_BYTE) || (defined(__cpp_lib_byte) && __cpp_lib_byte >= 201603)
#endif // GSL_USE_STD_BYTE
#else // _MSC_VER