From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
---
libvirt-utils.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/libvirt-utils.h b/libvirt-utils.h
index 05c1135..a62db2b 100644
--- a/libvirt-utils.h
+++ b/libvirt-utils.h
@@ -43,4 +43,15 @@
#define xalloc_oversized(n, s) \
((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__ */
--
1.8.3.1
--
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