Fix warnings.

apps/ocsp.c

@@ -1244,7 +1244,7 @@ static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
 		return 0;
 	BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
 	i2d_OCSP_RESPONSE_bio(cbio, resp);
-	BIO_flush(cbio);
+	(void)BIO_flush(cbio);
 	return 1;
 	}
 

apps/rand.c

@@ -213,7 +213,7 @@ int MAIN(int argc, char **argv)
 		BIO_write(out, buf, chunk);
 		num -= chunk;
 		}
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	app_RAND_write_file(NULL, bio_err);
 	ret = 0;

apps/req.c

@@ -1648,7 +1648,7 @@ static EVP_PKEY_CTX *set_keygen_ctx(BIO *err, const char *gstr, int *pkey_type,
 		if (!param)
 			{
 			X509 *x;
-			BIO_reset(pbio);
+			(void)BIO_reset(pbio);
 			x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
 			if (x)
 				{

apps/s_cb.c

@@ -590,7 +590,7 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 			BIO_printf(bio, " ...");
 		BIO_printf(bio, "\n");
 		}
-	BIO_flush(bio);
+	(void)BIO_flush(bio);
 	}
 
 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
@@ -648,6 +648,6 @@ void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 	BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 			client_server ? "server": "client",
 			extname, type, len);
-	BIO_dump(bio, data, len);
+	BIO_dump(bio, (char *)data, len);
 	BIO_flush(bio);
 	}

apps/s_client.c

@@ -893,7 +893,7 @@ re_start:
 			goto end;
 			}
 
-		BIO_ctrl_set_connected(sbio, 1, &peer);
+		(void)BIO_ctrl_set_connected(sbio, 1, &peer);
 
 		if (enable_timeouts)
 			{
@@ -984,7 +984,7 @@ re_start:
 		while (mbuf_len>3 && mbuf[3]=='-');
 		/* STARTTLS command requires EHLO... */
 		BIO_printf(fbio,"EHLO openssl.client.net\r\n");
-		BIO_flush(fbio);
+		(void)BIO_flush(fbio);
 		/* wait for multi-line response to end EHLO SMTP response */
 		do
 			{
@@ -993,7 +993,7 @@ re_start:
 				foundit=1;
 			}
 		while (mbuf_len>3 && mbuf[3]=='-');
-		BIO_flush(fbio);
+		(void)BIO_flush(fbio);
 		BIO_pop(fbio);
 		BIO_free(fbio);
 		if (!foundit)
@@ -1017,7 +1017,7 @@ re_start:
 		BIO_gets(fbio,mbuf,BUFSIZZ);
 		/* STARTTLS command requires CAPABILITY... */
 		BIO_printf(fbio,". CAPABILITY\r\n");
-		BIO_flush(fbio);
+		(void)BIO_flush(fbio);
 		/* wait for multi-line CAPABILITY response */
 		do
 			{
@@ -1026,7 +1026,7 @@ re_start:
 				foundit=1;
 			}
 		while (mbuf_len>3 && mbuf[0]!='.');
-		BIO_flush(fbio);
+		(void)BIO_flush(fbio);
 		BIO_pop(fbio);
 		BIO_free(fbio);
 		if (!foundit)
@@ -1046,7 +1046,7 @@ re_start:
 			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
 			}
 		while (mbuf_len>3 && mbuf[3]=='-');
-		BIO_flush(fbio);
+		(void)BIO_flush(fbio);
 		BIO_pop(fbio);
 		BIO_free(fbio);
 		BIO_printf(sbio,"AUTH TLS\r\n");
@@ -1578,6 +1578,6 @@ static void print_stuff(BIO *bio, SSL *s, int full)
 	if (peer != NULL)
 		X509_free(peer);
 	/* flush, or debugging output gets mixed with http response */
-	BIO_flush(bio);
+	(void)BIO_flush(bio);
 	}
 

apps/s_server.c

@@ -1458,7 +1458,7 @@ bad:
 		}
 
 	BIO_printf(bio_s_out,"ACCEPT\n");
-	BIO_flush(bio_s_out);
+	(void)BIO_flush(bio_s_out);
 	if (www)
 		do_server(port,socket_type,&accept_socket,www_body, context);
 	else

crypto/bn/bntest.c

@@ -184,120 +184,120 @@ int main(int argc, char *argv[])
 
 	message(out,"BN_add");
 	if (!test_add(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_sub");
 	if (!test_sub(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_lshift1");
 	if (!test_lshift1(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_lshift (fixed)");
 	if (!test_lshift(out,ctx,BN_bin2bn(lst,sizeof(lst)-1,NULL)))
 	    goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_lshift");
 	if (!test_lshift(out,ctx,NULL)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_rshift1");
 	if (!test_rshift1(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_rshift");
 	if (!test_rshift(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_sqr");
 	if (!test_sqr(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mul");
 	if (!test_mul(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_div");
 	if (!test_div(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_div_word");
 	if (!test_div_word(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_div_recp");
 	if (!test_div_recp(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mod");
 	if (!test_mod(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mod_mul");
 	if (!test_mod_mul(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mont");
 	if (!test_mont(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mod_exp");
 	if (!test_mod_exp(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mod_exp_mont_consttime");
 	if (!test_mod_exp_mont_consttime(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_exp");
 	if (!test_exp(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_kronecker");
 	if (!test_kron(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_mod_sqrt");
 	if (!test_sqrt(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_add");
 	if (!test_gf2m_add(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod");
 	if (!test_gf2m_mod(out)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_mul");
 	if (!test_gf2m_mod_mul(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_sqr");
 	if (!test_gf2m_mod_sqr(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_inv");
 	if (!test_gf2m_mod_inv(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_div");
 	if (!test_gf2m_mod_div(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_exp");
 	if (!test_gf2m_mod_exp(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_sqrt");
 	if (!test_gf2m_mod_sqrt(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	message(out,"BN_GF2m_mod_solve_quad");
 	if (!test_gf2m_mod_solve_quad(out,ctx)) goto err;
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	BN_CTX_free(ctx);
 	BIO_free(out);
@@ -307,7 +307,7 @@ int main(int argc, char *argv[])
 err:
 	BIO_puts(out,"1\n"); /* make sure the Perl script fed by bc notices
 	                      * the failure, see test_bn in test/Makefile.ssl*/
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	ERR_load_crypto_strings();
 	ERR_print_errors_fp(stderr);
 	EXIT(1);

crypto/ecdh/ecdhtest.c

@@ -148,7 +148,7 @@ static int test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
 #ifdef NOISY
 	BIO_puts(out,"\n");
 #else
-	BIO_flush(out);
+	(void)BIO_flush(out);
 #endif
 
 	if (!EC_KEY_generate_key(a)) goto err;
@@ -173,7 +173,7 @@ static int test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
 	BIO_puts(out,"\n");
 #else
 	BIO_printf(out," .");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 #endif
 
 	if (!EC_KEY_generate_key(b)) goto err;
@@ -199,7 +199,7 @@ static int test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
 	BIO_puts(out,"\n");
 #else
 	BIO_printf(out,".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 #endif
 
 	alen=KDF1_SHA1_len;
@@ -216,7 +216,7 @@ static int test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
 	BIO_puts(out,"\n");
 #else
 	BIO_printf(out,".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 #endif
 
 	blen=KDF1_SHA1_len;
@@ -233,7 +233,7 @@ static int test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
 	BIO_puts(out,"\n");
 #else
 	BIO_printf(out,".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 #endif
 
 	if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))

crypto/ecdsa/ecdsatest.c

@@ -203,13 +203,13 @@ int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in)
 	if (!EC_KEY_generate_key(key))
 		goto x962_int_err;
 	BIO_printf(out, ".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	/* create the signature */
 	signature = ECDSA_do_sign(digest, 20, key);
 	if (signature == NULL)
 		goto x962_int_err;
 	BIO_printf(out, ".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	/* compare the created signature with the expected signature */
 	if ((r = BN_new()) == NULL || (s = BN_new()) == NULL)
 		goto x962_int_err;
@@ -219,12 +219,12 @@ int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in)
 	if (BN_cmp(signature->r ,r) || BN_cmp(signature->s, s))
 		goto x962_int_err;
 	BIO_printf(out, ".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	/* verify the signature */
 	if (ECDSA_do_verify(digest, 20, signature, key) != 1)
 		goto x962_int_err;
 	BIO_printf(out, ".");
-	BIO_flush(out);
+	(void)BIO_flush(out);
 
 	BIO_printf(out, " ok\n");
 	ret = 1;
@@ -369,7 +369,7 @@ int test_builtin(BIO *out)
 			}
 
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* check key */
 		if (!EC_KEY_check_key(eckey))
 			{
@@ -377,7 +377,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* create signature */
 		sig_len = ECDSA_size(eckey);
 		if ((signature = OPENSSL_malloc(sig_len)) == NULL)
@@ -388,7 +388,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* verify signature */
 		if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1)
 			{
@@ -396,7 +396,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* verify signature with the wrong key */
 		if (ECDSA_verify(0, digest, 20, signature, sig_len, 
 			wrong_eckey) == 1)
@@ -405,7 +405,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* wrong digest */
 		if (ECDSA_verify(0, wrong_digest, 20, signature, sig_len,
 			eckey) == 1)
@@ -414,7 +414,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		/* modify a single byte of the signature */
 		offset = signature[10] % sig_len;
 		dirt   = signature[11];
@@ -425,7 +425,7 @@ int test_builtin(BIO *out)
 			goto builtin_err;
 			}
 		BIO_printf(out, ".");
-		BIO_flush(out);
+		(void)BIO_flush(out);
 		
 		BIO_printf(out, " ok\n");
 		/* cleanup */

crypto/ocsp/ocsp_ht.c

@@ -279,7 +279,7 @@ int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx)
 
 		rctx->state = OHS_ASN1_FLUSH;
 
-		BIO_reset(rctx->mem);
+		(void)BIO_reset(rctx->mem);
 
 		case OHS_ASN1_FLUSH:
 

crypto/pkcs7/pk7_mime.c

@@ -125,7 +125,7 @@ int i2d_PKCS7_bio_stream(BIO *out, PKCS7 *p7, BIO *in, int flags)
 			return 0;
 			}
 		SMIME_crlf_copy(in, bio, flags);
-		BIO_flush(bio);
+		(void)BIO_flush(bio);
 		/* Free up successive BIOs until we hit the old output BIO */
 		do
 			{
@@ -158,7 +158,7 @@ static int B64_write_PKCS7(BIO *out, PKCS7 *p7, BIO *in, int flags)
 	 */
 	out = BIO_push(b64, out);
 	r = i2d_PKCS7_bio_stream(out, p7, in, flags);
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	BIO_pop(out);
 	BIO_free(b64);
 	return r;
@@ -175,7 +175,7 @@ static PKCS7 *B64_read_PKCS7(BIO *bio)
 	bio = BIO_push(b64, bio);
 	if(!(p7 = d2i_PKCS7_bio(bio, NULL))) 
 		PKCS7err(PKCS7_F_B64_READ_PKCS7,PKCS7_R_DECODE_ERROR);
-	BIO_flush(bio);
+	(void)BIO_flush(bio);
 	bio = BIO_pop(bio);
 	BIO_free(b64);
 	return p7;
@@ -542,7 +542,7 @@ int SMIME_crlf_copy(BIO *in, BIO *out, int flags)
 			if(eol) BIO_write(out, "\r\n", 2);
 			}
 		}
-	BIO_flush(out);
+	(void)BIO_flush(out);
 	BIO_pop(out);
 	BIO_free(bf);
 	return 1;

crypto/pkcs7/pk7_smime.c

@@ -124,7 +124,7 @@ int PKCS7_final(PKCS7 *p7, BIO *data, int flags)
 
 	SMIME_crlf_copy(data, p7bio, flags);
 
-	BIO_flush(p7bio);
+	(void)BIO_flush(p7bio);
 
 
         if (!PKCS7_dataFinal(p7,p7bio))

ssl/d1_both.c

@@ -1141,7 +1141,7 @@ dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,
         SSL3_RT_CHANGE_CIPHER_SPEC : SSL3_RT_HANDSHAKE);
     s->d1->retransmitting = 0;
 
-    BIO_flush(SSL_get_wbio(s));
+    (void)BIO_flush(SSL_get_wbio(s));
     return ret;
     }