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-rw-r--r--include/sys/cdefs.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index cd0750b452..a2bdf20d93 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -12,4 +12,11 @@ extern void __chk_fail (void) __attribute__ ((__noreturn__));
 libc_hidden_proto (__chk_fail)
 rtld_hidden_proto (__chk_fail)
 
+
+#if __GNUC_PREREQ (4,3)
+# define __attribute_alloc_size(...) __attribute__ ((alloc_size (__VA_ARGS__)))
+#else
+# define __attribute_alloc_size(...)
+#endif
+
 #endif