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-rw-r--r--include/sys/cdefs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 4da981f9a..f725ce98c 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -231,6 +231,12 @@
# define __attribute_pure__ /* Ignore */
#endif
+#if __GNUC_PREREQ (2,96)
+# define __attribute_const__ __attribute__((__const__))
+#else
+# define __attribute_const__ /* unimplemented */
+#endif
+
/* At some point during the gcc 3.1 development the `used' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */