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Import gnulib's ignore_value macro

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Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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Daniel P. Berrange
2013-11-12 18:21:50 +00:00
parent c856b7c623
commit 834ee782d8
1 changed files with 11 additions and 0 deletions
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11
libvirt-utils.h
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@@ -43,4 +43,15 @@
# define xalloc_oversized(n, s) \ # define xalloc_oversized(n, s) \
((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n)) ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n))
/* The __attribute__((__warn_unused_result__)) feature
is available in gcc versions 3.4 and newer,
while the typeof feature has been available since 2.7 at least. */
# if 3 < __GNUC__ + (4 <= __GNUC_MINOR__)
# define ignore_value(x) \
(__extension__ ({ __typeof__ (x) __x = (x); (void) __x; }))
# else
# define ignore_value(x) ((void) (x))
# endif
#endif /* __LIBVIRT_UTILS_H__ */ #endif /* __LIBVIRT_UTILS_H__ */