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 <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/include/u-boot/md5.h b/include/u-boot/md5.h
index 08924cc..e09c16a 100644 (file)
--- 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
index 81a09e3..2ae4a06 100644 (file)
--- 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);