gentoo-overlay/net-dialup/xl2tpd/files/xl2tpd-1.3.1-no-type-punning-b119c0da.patch

commit b119c0daf006dcf9d960e5a98902d619cdfdf485
Author: Ted Phelps <phelps@gnusto.com>
Date:   Thu Dec 20 17:53:54 2012 +1100

    Avoid type punning: it makes gcc grumpy.
    
    Compilers don't like it when we write to memory as one type and read from it
    as another.  Use memcpy instead of typecast games to avoid doing that.

diff --git a/md5.c b/md5.c
index 175edcc..cb056da 100644
--- a/md5.c
+++ b/md5.c
@@ -161,8 +161,7 @@ void MD5Final (unsigned char digest[16], struct MD5Context *ctx)
     byteReverse (ctx->in, 14);
 
     /* Append length in bits and transform */
-    ((uint32 *) ctx->in)[14] = ctx->bits[0];
-    ((uint32 *) ctx->in)[15] = ctx->bits[1];
+    memcpy(ctx->in + 14 * sizeof(uint32), ctx->bits, sizeof(ctx->bits));
 
     MD5Transform (ctx->buf, (uint32 *) ctx->in);
     byteReverse ((unsigned char *) ctx->buf, 4);