From 07125b8d22d268b85281ce0c588d72caf7680cd4 Mon Sep 17 00:00:00 2001
From: "dejun.xdj" <dejun.xdj@alibaba-inc.com>
Date: Tue, 10 Apr 2018 16:36:05 +0800
Subject: [PATCH] Bugfix: xadd comand <field,value> arity check

missing parenthesis causes wrong arithmetic priority.
---
 src/t_stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/t_stream.c b/src/t_stream.c
index 4640f0b2..076ccf21 100644
--- a/src/t_stream.c
+++ b/src/t_stream.c
@@ -1009,7 +1009,7 @@ void xaddCommand(client *c) {
     int field_pos = i+1;
 
     /* Check arity. */
-    if ((c->argc - field_pos) < 2 || (c->argc-field_pos % 2) == 1) {
+    if ((c->argc - field_pos) < 2 || ((c->argc-field_pos) % 2) == 1) {
         addReplyError(c,"wrong number of arguments for XADD");
         return;
     }