From 4e80ec7e962dde43c8d7379f0167a242704336ad Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Wed, 26 Mar 2025 19:51:59 +0200
Subject: #3814 Out of range exception in TextCmdRemove::execute

---
 indra/llui/lltexteditor.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 3537c764b9..77a4976f6b 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -209,8 +209,15 @@ public:
     }
     virtual bool execute( LLTextBase* editor, S32* delta )
     {
-        mWString = editor->getWText().substr(getPosition(), mLen);
-        *delta = remove(editor, getPosition(), mLen );
+        try
+        {
+            mWString = editor->getWText().substr(getPosition(), mLen);
+            *delta = remove(editor, getPosition(), mLen);
+        }
+        catch (std::out_of_range&)
+        {
+            return false;
+        }
         return (*delta != 0);
     }
     virtual S32 undo( LLTextBase* editor )
-- 
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