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-rw-r--r--src/vnet/tcp/builtin_client.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/tcp/builtin_client.c b/src/vnet/tcp/builtin_client.c
index 276beb216d2..32d69a9633e 100644
--- a/src/vnet/tcp/builtin_client.c
+++ b/src/vnet/tcp/builtin_client.c
@@ -56,6 +56,9 @@ send_test_chunk (tclient_main_t * tm, session_t * s)
session_fifo_event_t evt;
static int serial_number = 0;
int rv;
+
+ ASSERT (vec_len (test_data) > 0);
+
test_buf_offset = s->bytes_sent % vec_len (test_data);
bytes_this_chunk = vec_len (test_data) - test_buf_offset;