From d8a26b0f4353f1b3eee2b2fa8207c907f282cd30 Mon Sep 17 00:00:00 2001
From: "jaggernaut%netscape.com"
 <jaggernaut%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Tue, 16 Apr 2002 06:27:16 +0000
Subject: [PATCH] Bug 121841: <!ENTITY> hangs 0.9.8 and trunk using 100% CPU.
 r=bryner, sr=scc. With thanks to Jeff Qiu <jeff.qiu@sun.com>.

git-svn-id: svn://10.0.0.236/trunk@119084 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/content/base/src/nsGenericDOMDataNode.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mozilla/content/base/src/nsGenericDOMDataNode.cpp b/mozilla/content/base/src/nsGenericDOMDataNode.cpp
index 87db0b20ee1..26027102d7c 100644
--- a/mozilla/content/base/src/nsGenericDOMDataNode.cpp
+++ b/mozilla/content/base/src/nsGenericDOMDataNode.cpp
@@ -507,7 +507,11 @@ nsGenericDOMDataNode::AppendData(const nsAString& aData)
     nsAutoString old_data;
     mText.AppendTo(old_data);
     length = old_data.Length();
-    rv = SetText(old_data + aData, PR_FALSE);
+    // XXXjag We'd like to just say |old_data + aData|, but due
+    // to issues with dependent concatenation and sliding (sub)strings
+    // we'll just have to copy for now. See bug 121841 for details.
+    old_data.Append(aData);
+    rv = SetText(old_data, PR_FALSE);
   } else {
     nsCAutoString old_data;
     mText.AppendTo(old_data);