From a4aaa67878509ea8296ef349bcfe98da48bc5457 Mon Sep 17 00:00:00 2001
From: "K.Kosako" <kkosako0@gmail.com>
Date: Thu, 24 Sep 2020 14:17:23 +0900
Subject: [PATCH] fix: Issue 25893 in oss-fuzz: Stack-buffer-overflow

---
 src/unicode.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/unicode.c b/src/unicode.c
index 080da74b..28583c33 100644
--- a/src/unicode.c
+++ b/src/unicode.c
@@ -431,13 +431,12 @@ onigenc_unicode_get_case_fold_codes_by_str(OnigEncoding enc,
 
       for (i = 0; i < ncs[0]; i++) {
         for (j = 0; j < ncs[1]; j++) {
+          if (cs[0][i] == orig_codes[0] && cs[1][j] == orig_codes[1])
+            continue;
           items[n].byte_len = lens[1];
           items[n].code_len = 2;
           items[n].code[0]  = cs[0][i];
           items[n].code[1]  = cs[1][j];
-          if (items[n].code[0] == orig_codes[0] &&
-              items[n].code[1] == orig_codes[1])
-            continue;
           n++;
         }
       }