Bug #72559 Unexpected Error in MySQL Workbench editing text object

• Submitted: 7 May 2014 10:53
• Modified: 17 Jun 2014 1:33
• Reporter: Eric Smith
• Status: Closed
• Category: MySQL Workbench: Modeling
• Severity: S2 (Serious)
• Version: 6.1.4.11773 build 1454
• OS: Windows (7)
• CPU Architecture: Any
• Tags: crash, Text Object, workbench

[7 May 2014 10:53] Eric Smith

Description:
Editing a Text Object in Workbench Modelling can cause an Unexpected error crash - "MySQL Workbench has encountered a problem Object reference not set to an instance of an object"

wb.log entry as follows:

10:33:54 [INF][ Canvas backend]: Found OpenGL version for this view: 4.4.0
10:39:42 [INF][ Canvas backend]: Found OpenGL version for this view: 4.4.0
11:17:11 [ERR][      Workbench]: Object reference not set to an instance of an object.
Exception = System.NullReferenceException
Message = Object reference not set to an instance of an object.
FullText = System.NullReferenceException: Object reference not set to an instance of an object.
   at MySQL.GUI.Workbench.Plugins.NoteEditor.RefreshFormData()
   at MySQL.GUI.Workbench.Plugins.ObjectEditorPlugin.CallRefreshFormData()
   at MySQL.Grt.RunWrappedDelegate0<void\,void\,MySQL::Grt::DelegateSlot0<void\,void>::ManagedDelegate>.native_callback()
   at boost.detail.function.void_function_invoker0<void (__cdecl*)(void),void>.invoke(function_buffer* function_ptr)
   at NoteEditorBE.set_text(NoteEditorBE* , basic_string<char\,std::char_traits<char>\,std::allocator<char> >* )
   at MySQL.Grt.NoteEditorBE.set_text(String text)
   at MySQL.GUI.Workbench.Plugins.NoteEditor.sqlTextBox_TextChanged(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnTextChanged(EventArgs e)
   at System.Windows.Forms.TextBoxBase.OnTextChanged(EventArgs e)
   at System.Windows.Forms.TextBoxBase.WmReflectCommand(Message& m)
   at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
   at System.Windows.Forms.TextBox.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

How to repeat:
Create a new diagram
Add a new text object
Enter some text
Add another item 
Re-edit the original text object
Regularly crashes when key stroke added to text object

[7 May 2014 14:28] MySQL Verification Team

Hello Eric,

Thank you for the bug report.
Verified as described.

Thanks,
Umesh

[7 May 2014 14:31] MySQL Verification Team

//
18:52:56 [INF][ Canvas backend]: Found OpenGL version for this view: 2.1.0 - Build 8.15.10.2182
18:54:03 [INF][ Canvas backend]: Found OpenGL version for this view: 2.1.0 - Build 8.15.10.2182
18:54:48 [ERR][      Workbench]: Object reference not set to an instance of an object.
Exception = System.NullReferenceException
Message = Object reference not set to an instance of an object.
FullText = System.NullReferenceException: Object reference not set to an instance of an object.
   at MySQL.GUI.Workbench.Plugins.NoteEditor.RefreshFormData()
   at MySQL.GUI.Workbench.Plugins.ObjectEditorPlugin.CallRefreshFormData()
   at MySQL.Grt.RunWrappedDelegate0<void\,void\,MySQL::Grt::DelegateSlot0<void\,void>::ManagedDelegate>.native_callback()
   at boost.detail.function.void_function_invoker0<void (__cdecl*)(void),void>.invoke(function_buffer* function_ptr)
   at NoteEditorBE.set_text(NoteEditorBE* , basic_string<char\,std::char_traits<char>\,std::allocator<char> >* )
   at MySQL.Grt.NoteEditorBE.set_text(String text)
   at MySQL.GUI.Workbench.Plugins.NoteEditor.sqlTextBox_TextChanged(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnTextChanged(EventArgs e)
   at System.Windows.Forms.TextBoxBase.OnTextChanged(EventArgs e)
   at System.Windows.Forms.TextBoxBase.WmReflectCommand(Message& m)
   at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
   at System.Windows.Forms.TextBox.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
19:03:20 [INF][      Workbench]: Shutting down Workbench
19:03:20 [INF][ mforms managed]: Shutting down mforms wrapper
19:03:20 [INF][      Workbench]: Done

[8 May 2014 8:04] Eric Smith

Workaround for anyone else affected:

1. Close diagram
2. Close model
3. Re-open model from Workbench home tab
4. Re-open diagram

[17 Jun 2014 1:33] Philip Olson

Fixed as of the upcoming MySQL Workbench 6.1.7 release, and here's the changelog entry:

For a new EER diagram, editing a text object after adding a different text
object could cause MySQL Workbench to crash. 

A workaround was to close the new diagram and model, and then reopen the 
model and diagram.

Thank you for the bug report.