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-rw-r--r--include/libc-internal.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/libc-internal.h b/include/libc-internal.h
index 78f82da..2ced1c1 100644
--- a/include/libc-internal.h
+++ b/include/libc-internal.h
@@ -70,4 +70,10 @@ extern void __init_misc (int, char **, char **);
#define PTR_ALIGN_UP(base, size) \
((__typeof__ (base)) ALIGN_UP ((uintptr_t) (base), (size)))
+/* Ignore the value of an expression when a cast to void does not
+ suffice (in particular, for a call to a function declared with
+ attribute warn_unused_result). */
+#define ignore_value(x) \
+ ({ __typeof__ (x) __ignored_value = (x); (void) __ignored_value; })
+
#endif /* _LIBC_INTERNAL */