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mdbx: add workaround for MSVC-2019 __has_cpp_attribute() bug.

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Change-Id: Ie17bc57a9f20dda32af617560641fc1b69dc03a0
This commit is contained in:
Leonid Yuriev 2020-08-22 01:06:35 +03:00
parent 0a75417d5f
commit cb64ba8258
1 changed files with 12 additions and 0 deletions
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12
mdbx.h
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@ -163,6 +163,8 @@ typedef pthread_t mdbx_tid_t;
(!defined(__clang__) /* https://bugs.llvm.org/show_bug.cgi?id=43275 */ \
|| !defined(__cplusplus) || !__has_feature(cxx_exceptions))
#define __pure_function __attribute__((__pure__))
#elif defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1920
#define __pure_function
#elif defined(__cplusplus) && __has_cpp_attribute(gnu::pure) && \
(!defined(__clang__) || !__has_feature(cxx_exceptions))
#define __pure_function [[gnu::pure]]
@ -177,6 +179,12 @@ typedef pthread_t mdbx_tid_t;
#if defined(__GNUC__) || \
(__has_attribute(__pure__) && __has_attribute(__nothrow__))
#define __nothrow_pure_function __attribute__((__pure__, __nothrow__))
#elif defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1920
#if __has_cpp_attribute(pure)
#define __nothrow_pure_function [[pure]]
#else
#define __nothrow_pure_function
#endif
#elif defined(__cplusplus) && __has_cpp_attribute(gnu::pure)
#if __has_cpp_attribute(gnu::nothrow)
#define __nothrow_pure_function [[gnu::pure, gnu::nothrow]]
@ -204,6 +212,8 @@ typedef pthread_t mdbx_tid_t;
(!defined(__clang__) /* https://bugs.llvm.org/show_bug.cgi?id=43275 */ \
|| !defined(__cplusplus) || !__has_feature(cxx_exceptions))
#define __const_function __attribute__((__const__))
#elif defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1920
#define __const_function __pure_function
#elif defined(__cplusplus) && __has_cpp_attribute(gnu::const) && \
(!defined(__clang__) || !__has_feature(cxx_exceptions))
#define __const_function [[gnu::const]]
@ -218,6 +228,8 @@ typedef pthread_t mdbx_tid_t;
#if defined(__GNUC__) || \
(__has_attribute(__const__) && __has_attribute(__nothrow__))
#define __nothrow_const_function __attribute__((__const__, __nothrow__))
#elif defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1920
#define __nothrow_const_function __nothrow_pure_function
#elif defined(__cplusplus) && __has_cpp_attribute(gnu::const)
#if __has_cpp_attribute(gnu::nothrow)
#define __nothrow_pure_function [[gnu::const, gnu::nothrow]]