add (void *) intermediate casts to elide gcc function cast warnings. …

…This

is the simplest solution; choices:
- add pragmas, complex and ugly (need to be gcc-specific)
- add -Wno to COPTS. Needs to be done in many makefiles because of rump
- add intermediate functions: slows down things

sys/opencrypto/cryptosoft.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: cryptosoft.c,v 1.53 2019/07/11 23:27:24 christos Exp $ */
+/*	$NetBSD: cryptosoft.c,v 1.54 2019/10/12 00:49:30 christos Exp $ */
 /*	$FreeBSD: src/sys/opencrypto/cryptosoft.c,v 1.2.2.1 2002/11/21 23:34:23 sam Exp $	*/
 /*	$OpenBSD: cryptosoft.c,v 1.35 2002/04/26 08:43:50 deraadt Exp $	*/
 
@@ -24,7 +24,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cryptosoft.c,v 1.53 2019/07/11 23:27:24 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cryptosoft.c,v 1.54 2019/10/12 00:49:30 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -500,15 +500,15 @@ swcr_authcompute(struct cryptop *crp, struct cryptodesc *crd,
 		break;
 	case CRYPTO_BUF_MBUF:
 		err = m_apply((struct mbuf *) buf, crd->crd_skip, crd->crd_len,
-		    (int (*)(void*, void *, unsigned int)) axf->Update,
+		    (int (*)(void*, void *, unsigned int))(void *)axf->Update,
 		    (void *) &ctx);
 		if (err)
 			return err;
 		break;
 	case CRYPTO_BUF_IOV:
 		err = cuio_apply((struct uio *) buf, crd->crd_skip,
 		    crd->crd_len,
-		    (int (*)(void *, void *, unsigned int)) axf->Update,
+		    (int (*)(void *, void *, unsigned int))(void *)axf->Update,
 		    (void *) &ctx);
 		if (err) {
 			return err;

sys/opencrypto/cryptosoft_xform.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: cryptosoft_xform.c,v 1.27 2014/11/27 20:30:21 christos Exp $ */
+/*	$NetBSD: cryptosoft_xform.c,v 1.28 2019/10/12 00:49:30 christos Exp $ */
 /*	$FreeBSD: src/sys/opencrypto/xform.c,v 1.1.2.1 2002/11/21 23:34:23 sam Exp $	*/
 /*	$OpenBSD: xform.c,v 1.19 2002/08/16 22:47:25 dhartmei Exp $	*/
 
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: cryptosoft_xform.c,v 1.27 2014/11/27 20:30:21 christos Exp $");
+__KERNEL_RCSID(1, "$NetBSD: cryptosoft_xform.c,v 1.28 2019/10/12 00:49:30 christos Exp $");
 
 #include <crypto/blowfish/blowfish.h>
 #include <crypto/cast128/cast128.h>
@@ -313,26 +313,26 @@ static const struct swcr_auth_hash swcr_auth_hash_sha1 = {
 
 static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_256 = {
 	&auth_hash_hmac_sha2_256, sizeof(SHA256_CTX),
-	(void (*)(void *)) SHA256_Init, NULL, NULL, SHA256Update_int,
-	(void (*)(u_int8_t *, void *)) SHA256_Final
+	(void (*)(void *))(void *)SHA256_Init, NULL, NULL, SHA256Update_int,
+	(void (*)(u_int8_t *, void *))(void *)SHA256_Final
 };
 
 static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_384 = {
 	&auth_hash_hmac_sha2_384, sizeof(SHA384_CTX),
-	(void (*)(void *)) SHA384_Init, NULL, NULL, SHA384Update_int,
-	(void (*)(u_int8_t *, void *)) SHA384_Final
+	(void (*)(void *))(void *)SHA384_Init, NULL, NULL, SHA384Update_int,
+	(void (*)(u_int8_t *, void *))(void *)SHA384_Final
 };
 
 static const struct swcr_auth_hash swcr_auth_hash_hmac_sha2_512 = {
 	&auth_hash_hmac_sha2_512, sizeof(SHA512_CTX),
-	(void (*)(void *)) SHA512_Init, NULL, NULL, SHA512Update_int,
-	(void (*)(u_int8_t *, void *)) SHA512_Final
+	(void (*)(void *))(void *)SHA512_Init, NULL, NULL, SHA512Update_int,
+	(void (*)(u_int8_t *, void *))(void *)SHA512_Final
 };
 
 static const struct swcr_auth_hash swcr_auth_hash_aes_xcbc_mac = {
 	&auth_hash_aes_xcbc_mac_96, sizeof(aesxcbc_ctx),
 	null_init,
-	(void (*)(void *, const u_int8_t *, u_int16_t))aes_xcbc_mac_init,
+	(void (*)(void *, const u_int8_t *, u_int16_t))(void *)aes_xcbc_mac_init,
 	NULL, aes_xcbc_mac_loop, aes_xcbc_mac_result
 };