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-rw-r--r--include/sys/cdefs.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index f725ce98c..6cd38114b 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -222,6 +222,15 @@
# define __attribute_malloc__ /* Ignore */
#endif
+/* Tell the compiler which arguments to an allocation function
+ indicate the size of the allocation. */
+#if __GNUC_PREREQ (4, 3)
+# define __attribute_alloc_size__(params) \
+ __attribute__ ((__alloc_size__ params))
+#else
+# define __attribute_alloc_size__(params) /* Ignore. */
+#endif
+
/* At some point during the gcc 2.96 development the `pure' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */