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mdbx: temporary workaround for Elbrus's libc bug.

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https://bugs.mcst.ru/bugzilla/show_bug.cgi?id=2820
This commit is contained in:
Leo Yuriev
2018-03-19 14:40:15 +03:00
parent 195b53374e
commit c05d179035
2 changed files with 147 additions and 0 deletions
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36
mdbx.h
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@@ -1818,6 +1818,42 @@ LIBMDBX_API int mdbx_cursor_get_attr(MDBX_cursor *mc, MDBX_val *key,
LIBMDBX_API int mdbx_get_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key,
MDBX_val *data, mdbx_attr_t *attrptr);
/*----------------------------------------------------------------------------*/
/* LY: temporary workaround for Elbrus's memcmp() bug. */
#ifndef __GLIBC_PREREQ
#if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
#define __GLIBC_PREREQ(maj, min) \
((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
#else
#define __GLIBC_PREREQ(maj, min) (0)
#endif
#endif /* __GLIBC_PREREQ */
#if defined(__e2k__) && !__GLIBC_PREREQ(2, 24)
LIBMDBX_API int mdbx_e2k_memcmp_bug_workaround(const void *s1, const void *s2,
size_t n);
LIBMDBX_API int mdbx_e2k_strcmp_bug_workaround(const char *s1, const char *s2);
LIBMDBX_API int mdbx_e2k_strncmp_bug_workaround(const char *s1, const char *s2,
size_t n);
LIBMDBX_API size_t mdbx_e2k_strlen_bug_workaround(const char *s);
LIBMDBX_API size_t mdbx_e2k_strnlen_bug_workaround(const char *s,
size_t maxlen);
#include <string.h>
#include <strings.h>
#undef memcmp
#define memcmp mdbx_e2k_memcmp_bug_workaround
#undef bcmp
#define bcmp mdbx_e2k_memcmp_bug_workaround
#undef strcmp
#define strcmp mdbx_e2k_strcmp_bug_workaround
#undef strncmp
#define strncmp mdbx_e2k_strncmp_bug_workaround
#undef strlen
#define strlen mdbx_e2k_strlen_bug_workaround
#undef strnlen
#define strnlen mdbx_e2k_strnlen_bug_workaround
#endif /* Elbrus's memcmp() bug. */
#ifdef __cplusplus
}
#endif