From: David Goulet <dgoulet@efficios.com>
Date: Mon, 22 Oct 2012 20:44:51 +0000 (-0400)
Subject: Fix: Remove bad condition and fix overflow issue
X-Git-Tag: v2.1.0-rc6~31
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=33832e643df265121266c16fd5dc54313e86e20f;hp=df27ef7b025240e4b93a74193fb61569fb8d3d14

Fix: Remove bad condition and fix overflow issue

Signed-off-by: David Goulet <dgoulet@efficios.com>
---

diff --git a/src/bin/lttng-relayd/main.c b/src/bin/lttng-relayd/main.c
index 0f81d556d..ebbe5e393 100644
--- a/src/bin/lttng-relayd/main.c
+++ b/src/bin/lttng-relayd/main.c
@@ -1355,7 +1355,8 @@ int relay_data_available(struct lttcomm_relayd_hdr *recv_hdr,
 			" and last_seq %" PRIu64, stream_id, stream->prev_seq,
 			last_net_seq_num);
 
-	if (stream->prev_seq == -1UL || stream->prev_seq <= last_net_seq_num) {
+	/* Avoid wrapping issue */
+	if (((int64_t) (stream->prev_seq - last_net_seq_num)) <= 0) {
 		/* Data has in fact been written and is available */
 		ret = 1;
 	} else {