From fa4ee514390f8aadfac40cd3324f27019dded2e7 Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Fri, 18 Jan 2013 22:46:51 +0000
Subject: [PATCH] Merge revision 1045 changes: - Windows: Avoid assertion when
 entering zero-length text in the default JavaScript prompt dialog (issue
 #862).

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1180@1048 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
---
 cef3/libcef/browser/javascript_dialog_win.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cef3/libcef/browser/javascript_dialog_win.cc b/cef3/libcef/browser/javascript_dialog_win.cc
index 14f5eabbe..66a4894b9 100644
--- a/cef3/libcef/browser/javascript_dialog_win.cc
+++ b/cef3/libcef/browser/javascript_dialog_win.cc
@@ -61,8 +61,10 @@ INT_PTR CALLBACK CefJavaScriptDialog::DialogProc(HWND dialog,
           if (owner->message_type_ == content::JAVASCRIPT_MESSAGE_TYPE_PROMPT) {
             size_t length =
                 GetWindowTextLength(GetDlgItem(dialog, IDC_PROMPTEDIT)) + 1;
-            GetDlgItemText(dialog, IDC_PROMPTEDIT,
-                           WriteInto(&user_input, length), length);
+            if (length > 1) {
+              GetDlgItemText(dialog, IDC_PROMPTEDIT,
+                             WriteInto(&user_input, length), length);
+            }
           }
           break;
         case IDCANCEL: