From 44efb7b809acb211fd4cdea1c7b0691a1d4f09e5 Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Mon, 6 Apr 2009 10:42:59 +0000
Subject: Changes with nginx 0.7.49                                        06
 Apr 2009

    *) Change: a segmentation fault might occur in worker process, if the
       $arg_... variables were used; the bug had appeared in 0.7.48.
---
 src/core/ngx_string.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/core/ngx_string.c')

diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index fbde1c2ce..8f2a17159 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -703,6 +703,10 @@ ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n)
 {
     ngx_uint_t  c1, c2;
 
+    if (s1 <= last) {
+        return NULL;
+    }
+
     c2 = (ngx_uint_t) *s2++;
     c2  = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
     last -= n;
-- 
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