commit 203e13d97de840e01eded6a267fef9f245cf3a15
author Elliott Hughes <enh@google.com> Fri Jul 22 14:56:18 2016 -0700
committer Elliott Hughes <enh@google.com> Fri Jul 22 17:01:54 2016 -0700
tree 83517885755d8c28f7f6934bff67f7ad36addf39
parent 767e8147d7f38bd9a23100ec9fa07b6a14a8b680

Always include <sys/cdefs.h>.

I made a mistake caught by code review earlier, so let's try to be
safer by default.

This patch also moves all our "forwarding" headers to the guardless
just-include-the-other-thing style that we usually use. (Where we
have a comment explaining where the header comes from, I've kept
that.)

Change-Id: I37342cf5e2563c6a269b2ba61a697069b1c7913b

libc/include/byteswap.h

diff --git a/libc/include/byteswap.h b/libc/include/byteswap.h
index 628fb7f..0838e6c 100644
--- a/libc/include/byteswap.h
+++ b/libc/include/byteswap.h
@@ -25,9 +25,11 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
 #ifndef _BYTESWAP_H_
 #define _BYTESWAP_H_
 
+#include <sys/cdefs.h>
 #include <sys/endian.h>
 
 #define bswap_16(x) __swap16(x)