GCC47: Fix warning in md5.c

md5.c: In function ‘MD5Final’: md5.c:156:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] md5.c:157:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] Signed-off-by: Marek Vasut <[email protected]> Cc: Wolfgang Denk <[email protected]> Acked-by: Mike Frysinger <[email protected]>
koenkooi · Apr 29, 2012 · b68d63c · b68d63c
1 parent f624dd1
commit b68d63c
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/include/u-boot/md5.h b/include/u-boot/md5.h
@@ -11,7 +11,10 @@
 struct MD5Context {
 	__u32 buf[4];
 	__u32 bits[2];
-	unsigned char in[64];
+	union {
+		unsigned char in[64];
+		__u32 in32[16];
+	};
 };
 
 /*

diff --git a/lib/md5.c b/lib/md5.c
@@ -153,8 +153,8 @@ MD5Final(unsigned char digest[16], struct MD5Context *ctx)
 	byteReverse(ctx->in, 14);
 
 	/* Append length in bits and transform */
-	((__u32 *) ctx->in)[14] = ctx->bits[0];
-	((__u32 *) ctx->in)[15] = ctx->bits[1];
+	ctx->in32[14] = ctx->bits[0];
+	ctx->in32[15] = ctx->bits[1];
 
 	MD5Transform(ctx->buf, (__u32 *) ctx->in);
 	byteReverse((unsigned char *) ctx->buf, 4);