* apt-pkg/contrib/sha2_internal.cc:

  - use a pointer-union to peace gcc strict-aliasing warning

apt-pkg/contrib/sha2_internal.cc

@@ -605,7 +605,12 @@ void SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
 			*context->buffer = 0x80;
 		}
 		/* Set the bit count: */
-		*(sha2_word64*)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
+		union {
+			sha2_byte* c;
+			sha2_word64* l;
+		} bitcount;
+		bitcount.c = &context->buffer[SHA256_SHORT_BLOCK_LENGTH];
+		*(bitcount.l) = context->bitcount;
 
 		/* Final transform: */
 		SHA256_Transform(context, (sha2_word32*)context->buffer);
@@ -922,8 +927,13 @@ static void SHA512_Last(SHA512_CTX* context) {
 		*context->buffer = 0x80;
 	}
 	/* Store the length of input data (in bits): */
-	*(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
-	*(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0];
+	union {
+		sha2_byte* c;
+		sha2_word64* l;
+	} bitcount;
+	bitcount.c = &context->buffer[SHA512_SHORT_BLOCK_LENGTH];
+	bitcount.l[0] = context->bitcount[1];
+	bitcount.l[1] = context->bitcount[0];
 
 	/* Final transform: */
 	SHA512_Transform(context, (sha2_word64*)context->buffer);

debian/changelog

@@ -4,8 +4,10 @@ apt (0.8.16~exp8) experimental; urgency=low
   * apt-pkg/packagemanager.cc:
     - do not fail on unpacked packages in SmartUnPack, just don't
       shedule them for unpack, but do all checks and configure them
+  * apt-pkg/contrib/sha2_internal.cc:
+    - use a pointer-union to peace gcc strict-aliasing warning
 
- -- David Kalnischkies <kalnischkies@gmail.com>  Mon, 17 Oct 2011 11:21:21 +0200
+ -- David Kalnischkies <kalnischkies@gmail.com>  Sun, 30 Oct 2011 14:15:53 -0500
 
 apt (0.8.16~exp7) experimental; urgency=low