nixpkgs/pkgs/development/libraries/usrsctp/clang-fix-build.patch

diff --git a/usrsctplib/netinet/sctp_cc_functions.c b/usrsctplib/netinet/sctp_cc_functions.c
index 57bcdaa..70cf8b7 100755
--- a/usrsctplib/netinet/sctp_cc_functions.c
+++ b/usrsctplib/netinet/sctp_cc_functions.c
@@ -764,7 +764,7 @@ sctp_cwnd_update_after_sack_common(struct sctp_tcb *stcb,
 #if defined(__FreeBSD__) && !defined(__Userspace__)
 	int old_cwnd;
 #endif
-	uint32_t t_ssthresh, t_cwnd, incr;
+	uint32_t t_ssthresh, incr;
 	uint64_t t_ucwnd_sbw;
 	uint64_t t_path_mptcp;
 	uint64_t mptcp_like_alpha;
@@ -773,7 +773,6 @@ sctp_cwnd_update_after_sack_common(struct sctp_tcb *stcb,
 
 	/* MT FIXME: Don't compute this over and over again */
 	t_ssthresh = 0;
-	t_cwnd = 0;
 	t_ucwnd_sbw = 0;
 	t_path_mptcp = 0;
 	mptcp_like_alpha = 1;
@@ -783,7 +782,6 @@ sctp_cwnd_update_after_sack_common(struct sctp_tcb *stcb,
 		max_path = 0;
 		TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 			t_ssthresh += net->ssthresh;
-			t_cwnd += net->cwnd;
 			/* lastsa>>3;  we don't need to devide ...*/
 			srtt = net->lastsa;
 			if (srtt > 0) {
diff --git a/usrsctplib/netinet/sctp_indata.c b/usrsctplib/netinet/sctp_indata.c
index 3bce9e9..42ce111 100755
--- a/usrsctplib/netinet/sctp_indata.c
+++ b/usrsctplib/netinet/sctp_indata.c
@@ -3320,7 +3320,6 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc,
 	struct sctp_tmit_chunk *tp1;
 	int strike_flag = 0;
 	struct timeval now;
-	int tot_retrans = 0;
 	uint32_t sending_seq;
 	struct sctp_nets *net;
 	int num_dests_sacked = 0;
@@ -3691,7 +3690,6 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc,
 			}
 
 			tp1->rec.data.doing_fast_retransmit = 1;
-			tot_retrans++;
 			/* mark the sending seq for possible subsequent FR's */
 			/*
 			 * SCTP_PRINTF("Marking TSN for FR new value %x\n",
diff --git a/usrsctplib/netinet/sctp_output.c b/usrsctplib/netinet/sctp_output.c
index 6a7dff9..a914b3b 100755
--- a/usrsctplib/netinet/sctp_output.c
+++ b/usrsctplib/netinet/sctp_output.c
@@ -9970,7 +9970,7 @@ sctp_chunk_retransmission(struct sctp_inpcb *inp,
 	struct mbuf *m, *endofchain;
 	struct sctp_nets *net = NULL;
 	uint32_t tsns_sent = 0;
-	int no_fragmentflg, bundle_at, cnt_thru;
+	int no_fragmentflg, bundle_at;
 	unsigned int mtu;
 	int error, i, one_chunk, fwd_tsn, ctl_cnt, tmr_started;
 	struct sctp_auth_chunk *auth = NULL;
@@ -10046,7 +10046,6 @@ sctp_chunk_retransmission(struct sctp_inpcb *inp,
 		}
 	}
 	one_chunk = 0;
-	cnt_thru = 0;
 	/* do we have control chunks to retransmit? */
 	if (m != NULL) {
 		/* Start a timer no matter if we succeed or fail */
@@ -10368,7 +10367,6 @@ sctp_chunk_retransmission(struct sctp_inpcb *inp,
 			/* (void)SCTP_GETTIME_TIMEVAL(&net->last_sent_time); */
 
 			/* For auto-close */
-			cnt_thru++;
 			if (*now_filled == 0) {
 				(void)SCTP_GETTIME_TIMEVAL(&asoc->time_last_sent);
 				*now = asoc->time_last_sent;
@@ -13416,7 +13414,7 @@ sctp_lower_sosend(struct socket *so,
 	struct epoch_tracker et;
 #endif
 	ssize_t sndlen = 0, max_len, local_add_more;
-	int error, len;
+	int error;
 	struct mbuf *top = NULL;
 	int queue_only = 0, queue_only_for_init = 0;
 	int free_cnt_applied = 0;
@@ -14035,7 +14033,6 @@ sctp_lower_sosend(struct socket *so,
 		 */
 		local_add_more = sndlen;
 	}
-	len = 0;
 	if (non_blocking) {
 		goto skip_preblock;
 	}
@@ -14265,7 +14262,6 @@ skip_preblock:
 				}
 				sctp_snd_sb_alloc(stcb, sndout);
 				atomic_add_int(&sp->length, sndout);
-				len += sndout;
 				if (sinfo_flags & SCTP_SACK_IMMEDIATELY) {
 					sp->sinfo_flags |= SCTP_SACK_IMMEDIATELY;
 				}
diff --git a/usrsctplib/netinet/sctp_pcb.c b/usrsctplib/netinet/sctp_pcb.c
index 89a66bc..a952921 100755
--- a/usrsctplib/netinet/sctp_pcb.c
+++ b/usrsctplib/netinet/sctp_pcb.c
@@ -7943,7 +7943,7 @@ sctp_drain_mbufs(struct sctp_tcb *stcb)
 }
 
 void
-sctp_drain()
+sctp_drain(void)
 {
 	/*
 	 * We must walk the PCB lists for ALL associations here. The system
diff --git a/usrsctplib/netinet/sctp_sysctl.c b/usrsctplib/netinet/sctp_sysctl.c
index bb49e17..8b77f7e 100755
--- a/usrsctplib/netinet/sctp_sysctl.c
+++ b/usrsctplib/netinet/sctp_sysctl.c
@@ -61,7 +61,7 @@ FEATURE(sctp, "Stream Control Transmission Protocol");
  */
 
 void
-sctp_init_sysctls()
+sctp_init_sysctls(void)
 {
 	SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
 	SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
diff --git a/usrsctplib/user_socket.c b/usrsctplib/user_socket.c
index 513a5a9..89e9eb2 100755
--- a/usrsctplib/user_socket.c
+++ b/usrsctplib/user_socket.c
@@ -2857,7 +2857,6 @@ sctp_userspace_ip_output(int *result, struct mbuf *o_pak,
 	struct mbuf *m_orig;
 	int iovcnt;
 	int len;
-	int send_count;
 	struct ip *ip;
 	struct udphdr *udp;
 	struct sockaddr_in dst;
@@ -2930,16 +2929,13 @@ sctp_userspace_ip_output(int *result, struct mbuf *o_pak,
 		m_adj(m, sizeof(struct ip) + sizeof(struct udphdr));
 	}
 
-	send_count = 0;
 	for (iovcnt = 0; m != NULL && iovcnt < MAXLEN_MBUF_CHAIN; m = m->m_next, iovcnt++) {
 #if !defined(_WIN32)
 		send_iovec[iovcnt].iov_base = (caddr_t)m->m_data;
 		send_iovec[iovcnt].iov_len = SCTP_BUF_LEN(m);
-		send_count += send_iovec[iovcnt].iov_len;
 #else
 		send_iovec[iovcnt].buf = (caddr_t)m->m_data;
 		send_iovec[iovcnt].len = SCTP_BUF_LEN(m);
-		send_count += send_iovec[iovcnt].len;
 #endif
 	}
 
@@ -3002,7 +2998,6 @@ void sctp_userspace_ip6_output(int *result, struct mbuf *o_pak,
 	struct mbuf *m_orig;
 	int iovcnt;
 	int len;
-	int send_count;
 	struct ip6_hdr *ip6;
 	struct udphdr *udp;
 	struct sockaddr_in6 dst;
@@ -3076,16 +3071,13 @@ void sctp_userspace_ip6_output(int *result, struct mbuf *o_pak,
 	  m_adj(m, sizeof(struct ip6_hdr));
 	}
 
-	send_count = 0;
 	for (iovcnt = 0; m != NULL && iovcnt < MAXLEN_MBUF_CHAIN; m = m->m_next, iovcnt++) {
 #if !defined(_WIN32)
 		send_iovec[iovcnt].iov_base = (caddr_t)m->m_data;
 		send_iovec[iovcnt].iov_len = SCTP_BUF_LEN(m);
-		send_count += send_iovec[iovcnt].iov_len;
 #else
 		send_iovec[iovcnt].buf = (caddr_t)m->m_data;
 		send_iovec[iovcnt].len = SCTP_BUF_LEN(m);
-		send_count += send_iovec[iovcnt].len;
 #endif
 	}
 	if (m != NULL) {