From de9bae21efa2e14d71bdedb3326abacbb310135c Mon Sep 17 00:00:00 2001
From: Oran Agra <oran@redislabs.com>
Date: Thu, 1 Jul 2021 08:19:04 +0300
Subject: [PATCH] Fix bug in sdscatfmt when % is the last format char (#9173)

For the sdscatfmt function in sds.c, when the parameter fmt ended up with '%',
the behavior is undefined. This commit fix this bug.

Co-authored-by: stafuc <stafuc@gmail.com>
---
 src/sds.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sds.c b/src/sds.c
index 036d714d41..e722abbcaa 100644
--- a/src/sds.c
+++ b/src/sds.c
@@ -682,6 +682,7 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
         switch(*f) {
         case '%':
             next = *(f+1);
+            if (next == '\0') break;
             f++;
             switch(next) {
             case 's':