commit 24fad01755d33e6772ea3be56b702570bf257d55
author Elliott Hughes <enh@google.com> Mon Feb 04 13:44:14 2013 -0800
committer Elliott Hughes <enh@google.com> Mon Feb 04 13:44:14 2013 -0800
tree 7e2bb950c87cf765f6f6b147840c2dc8a0af097a
parent a3120aaf2f4e20261a2ea9fd8862e2b360183fc5

Document the mallinfo struct, add missing attributes.

Change-Id: Ia97acce1f6a83bd8b3ba8dd20efd962bc96f35a9

libc/include/sys/cdefs.h

diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index 937abe0..aa65b54 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -321,6 +321,12 @@
 #define __always_inline
 #endif
 
+#if __GNUC_PREREQ__(3, 4)
+#define __wur __attribute__((__warn_unused_result__))
+#else
+#define __wur
+#endif
+
 /*
  * Macros for manipulating "link sets".  Link sets are arrays of pointers
  * to objects, which are gathered up by the linker.