From 4c4843605bc6c3b88fe1b342e96153b1f002e3e5 Mon Sep 17 00:00:00 2001
From: wujianlin <wujianlin8@h-partners.com>
Date: Tue, 29 Oct 2024 11:32:50 +0800
Subject: [PATCH] cherry pick 37c61b2 from
 https://gitee.com/chenkeyu13/commonlibrary_c_utils/pulls/463 Increases the
 supersize check of the returned value

Issue:https://gitee.com/openharmony/commonlibrary_c_utils/issues/IB0GRW?from=project-issue
Signed-off-by: wujianlin <wujianlin8@h-partners.com>
---
 base/src/unicode_ex.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base/src/unicode_ex.cpp b/base/src/unicode_ex.cpp
index ff455be..79854cc 100644
--- a/base/src/unicode_ex.cpp
+++ b/base/src/unicode_ex.cpp
@@ -330,7 +330,7 @@ char16_t* Char8ToChar16(const char* str8, size_t str8Len)
 {
     char16_t* str16 = nullptr;
     int utf16Len = Utf8ToUtf16Length(str8, str8Len);
-    if (utf16Len < 0) {
+    if (utf16Len < 0 || utf16Len >= INT_MAX) {
         UTILS_LOGE("Get str16 length failed,length is: %{public}d", utf16Len);
         return nullptr;
     }
-- 
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