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Enable CONSTCD14 for VS2017

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James Beach 2017-01-19 17:15:43 +00:00 committed by Howard Hinnant
parent 49a59e5665
commit 186dbb2891
1 changed files with 16 additions and 9 deletions
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25
date.h
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@ -57,15 +57,22 @@ namespace date
// Configuration |
//---------------+
// MSVC's constexpr support is still a WIP, even in VS2015.
// Fall back to a lesser mode to support it.
// TODO: Remove this or retest later once MSVC's constexpr improves.
#if defined(_MSC_VER) && _MSC_VER <= 1900 && ! defined(__clang__)
// MS cl compiler pre VS2017
# define CONSTDATA const
# define CONSTCD11
# define CONSTCD14
# define NOEXCEPT _NOEXCEPT
#if defined(_MSC_VER) && !defined(__clang__)
// MSVC
# if _MSC_VER < 1910
// before VS2017
# define CONSTDATA const
# define CONSTCD11
# define CONSTCD14
# define NOEXCEPT _NOEXCEPT
# else
// VS2017 and later
# define CONSTDATA constexpr const
# define CONSTCD11 constexpr
# define CONSTCD14 constexpr
# define NOEXCEPT noexcept
# endif
#elif __cplusplus >= 201402
// C++14
# define CONSTDATA constexpr const