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regex: improve Gnulib port to AIX

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From the glibc point of view, this removes duplicate macro
definitions and is obviously safe.
From the Gnulib point of view, this pacifies xlc 12.01 on AIX 7.1.
* posix/regex_internal.h:
(__attribute__, __attribute_warn_unused_result__):
Remove; already defined elsewhere.
This commit is contained in:
Paul Eggert
2018-12-31 15:08:31 -08:00
parent b50dd3bc8c
commit 9b7f98b345
2 changed files with 10 additions and 12 deletions
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12
posix/regex_internal.h
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@ -146,10 +146,6 @@
# define __regfree regfree
#endif /* not _LIBC */
#if !__GNUC_PREREQ (3, 1)
# define __attribute__(arg)
#endif
#ifndef SSIZE_MAX
# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
#endif
@ -867,14 +863,6 @@ re_string_elem_size_at (const re_string_t *pstr, Idx idx)
}
#endif /* RE_ENABLE_I18N */
#if __GNUC_PREREQ (3,4)
# undef __attribute_warn_unused_result__
# define __attribute_warn_unused_result__ \
__attribute__ ((__warn_unused_result__))
#else
# define __attribute_warn_unused_result__ /* empty */
#endif
#ifndef FALLTHROUGH
# if __GNUC__ < 7
# define FALLTHROUGH ((void) 0)