[FFmpeg-cvslog] avutil/ripemd: make rol macro more robust by adding parentheses

[Ganesh Ajjanagadde]

ffmpeg | branch: master | Ganesh Ajjanagadde <gajjanagadde at gmail.com> | Tue Oct 27 19:58:41 2015 -0400| [fab1562a50684783f5567c5262c942f5cda9656f] | committer: Ganesh Ajjanagadde

avutil/ripemd: make rol macro more robust by adding parentheses

This ensures that the macro remains correct in the sense of allowing
expressions for value and bits, by placing the value and bits expressions within
parentheses.

Reviewed-by: James Almer <jamrial at gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fab1562a50684783f5567c5262c942f5cda9656f
---

 libavutil/ripemd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/ripemd.c b/libavutil/ripemd.c
index d247fb4..6777c99 100644
--- a/libavutil/ripemd.c
+++ b/libavutil/ripemd.c
@@ -85,7 +85,7 @@ static const int WB[80] = {
     12, 15, 10,  4,  1,  5,  8,  7,  6,  2, 13, 14,  0,  3,  9, 11
 };
 
-#define rol(value, bits) ((value << bits) | (value >> (32 - bits)))
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
 
 #define ROUND128_0_TO_15(a,b,c,d,e,f,g,h)                               \
     a = rol(a + ((  b ^ c  ^ d)      + block[WA[n]]),         ROTA[n]); \