libnbcompat: Update to 20230904.

Pull in changes from revision 1.13 of NetBSD sha2.c from 14 years ago to
fix type punning issues seen with newer GCCs.

Fixes "pkg_admin digest" on SmartOS with GCC 12, where the output was
completely wrong, causing bulk builds to rebuild every package every time
now that USE_PKG_ADMIN_DIGEST=yes is the default.

pkgtools/libnbcompat/Makefile

@@ -1,12 +1,11 @@
-# $NetBSD: Makefile,v 1.90 2023/06/27 09:31:09 riastradh Exp $
+# $NetBSD: Makefile,v 1.91 2023/09/04 19:51:19 jperkin Exp $
 #
 # NOTE: If you update this package, it is *mandatory* that you update
 # 	pkgsrc/pkgtools/libnbcompat/files/README to reflect the actual
 #	list of tested and supported platforms.
 #
 
-PKGNAME=		libnbcompat-20230609
-PKGREVISION=		1
+PKGNAME=		libnbcompat-20230904
 CATEGORIES=		pkgtools devel
 
 MAINTAINER=		[email protected]

pkgtools/libnbcompat/files/README

@@ -1,4 +1,4 @@
-$NetBSD: README,v 1.27 2023/06/27 09:31:09 riastradh Exp $
+$NetBSD: README,v 1.28 2023/09/04 19:51:19 jperkin Exp $
 
  0 Introduction
  ==============
@@ -44,6 +44,13 @@ breakage seep in.  Proper methodology for updating this package is:
 *NOTE* the most recent libnbcompat.
 *NOTE*
 
+libnbcompat-20230904 has been tested to build and install correctly
+on the following operating systems:
+
+	Darwin-22.6.0-aarch64		<[email protected]>
+	SunOS-5.11-i386			<[email protected]>
+	SunOS-5.11-x86_64		<[email protected]>
+
 libnbcompat-20230609 has been tested to build and install correctly
 on the following operating systems:
 

pkgtools/libnbcompat/files/sha2.c

@@ -1,4 +1,4 @@
-/* $NetBSD: sha2.c,v 1.8 2011/11/08 18:20:03 joerg Exp $ */
+/* $NetBSD: sha2.c,v 1.9 2023/09/04 19:51:19 jperkin Exp $ */
 /*	$KAME: sha2.c,v 1.9 2003/07/20 00:28:38 itojun Exp $	*/
 
 /*
@@ -568,7 +568,8 @@ void SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
 			*context->buffer = 0x80;
 		}
 		/* Set the bit count: */
-		*(sha2_word64*)(void *)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
+		memcpy(&context->buffer[SHA256_SHORT_BLOCK_LENGTH],
+		    &context->bitcount, sizeof(context->bitcount));
 
 		/* Final transform: */
 		SHA256_Transform(context, (sha2_word32*)(void *)context->buffer);
@@ -871,8 +872,10 @@ static void SHA512_Last(SHA512_CTX* context) {
 		*context->buffer = 0x80;
 	}
 	/* Store the length of input data (in bits): */
-	*(sha2_word64*)(void *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
-	*(sha2_word64*)(void *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0];
+	memcpy(&context->buffer[SHA512_SHORT_BLOCK_LENGTH],
+	    &context->bitcount[1], sizeof(context->bitcount[1]));
+	memcpy(&context->buffer[SHA512_SHORT_BLOCK_LENGTH + 8],
+	    &context->bitcount[0], sizeof(context->bitcount[0]));
 
 	/* Final transform: */
 	SHA512_Transform(context, (sha2_word64*)(void *)context->buffer);