From c2b2e4fe98478e42b3e4bf7ee58e9fcaaa02b8c6 Mon Sep 17 00:00:00 2001
From: lovechinamo <wangdongqi2@huawei.com>
Date: Mon, 20 Jun 2022 16:48:26 +0800
Subject: [PATCH] Signed-off-by: lovechinamo <wangdongqi2@huawei.com>

 Changes to be committed:
	modified:   input_method_controller.cpp
---
 .../inputmethod_controller/src/input_method_controller.cpp     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/frameworks/inputmethod_controller/src/input_method_controller.cpp b/frameworks/inputmethod_controller/src/input_method_controller.cpp
index 53adcf5..4795055 100644
--- a/frameworks/inputmethod_controller/src/input_method_controller.cpp
+++ b/frameworks/inputmethod_controller/src/input_method_controller.cpp
@@ -384,8 +384,9 @@ using namespace MessageID;
 
     std::u16string InputMethodController::GetTextAfterCursor(int32_t number)
     {
+        constexpr unsigned int MAX_INT32_T = 2147483647;
         IMSA_HILOGI("InputMethodController::GetTextBeforeCursor");
-        if (!mTextString.empty()) {
+        if (!mTextString.empty() && mTextString.size <= MAX_INT32_T) {
             int32_t endPos = (mSelectNewEnd + number < static_cast<int32_t>(mTextString.size()))
                                  ? (mSelectNewEnd + number)
                                  : mTextString.size();