From 207f656e8f6524e7a499d2dcb9353d327fdfb45f Mon Sep 17 00:00:00 2001
From: Alexander Borisov <alexander.borisov@nginx.com>
Date: Thu, 11 Jul 2019 15:42:33 +0300
Subject: [PATCH] Fixed used of uninitialized memory in
 String.prototype.match().

---
 njs/njs_string.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/njs/njs_string.c b/njs/njs_string.c
index 644031c3..b6a21a54 100644
--- a/njs/njs_string.c
+++ b/njs/njs_string.c
@@ -2734,8 +2734,14 @@ njs_string_match_multiple(njs_vm_t *vm, njs_value_t *args,
             start = p + captures[0];
 
             if (captures[1] == 0) {
-                p = nxt_utf8_next(start, end);
-                string.size = end - p;
+                if (start < end) {
+                    p = nxt_utf8_next(start, end);
+                    string.size = end - p;
+
+                } else {
+                    /* To exit the loop. */
+                    p++;
+                }
 
                 size = 0;
                 length = 0;
-- 
2.47.3