Bug #51683 "Unknown Exception caught in Canvas.h"
Submitted: 3 Mar 2010 9:56 Modified: 16 May 2010 13:39
Reporter: Arnaud Jacquemin Email Updates:
Status: No Feedback Impact on me:
Category:MySQL Workbench Severity:S3 (Non-critical)
Version:5.2.16 OSS beta OS:Microsoft Windows (Vista without Aero)
Assigned to: CPU Architecture:Any

[3 Mar 2010 9:56] Arnaud Jacquemin
During the reverse engineering process, at the "Reverse Engineer" step, a dialog pops-up saying : 

Unknown Exception caught in c:\documents and settings\mysqldev\build\mysql-workbench-oss-5.2.16\backend\windows\wbpublic.wr\Canvas.h at line 151

Version info:
You are currently using MySQL Workbench 5.2.16 OSS, Revision 5249

System info:
MySQL Workbench OSS for Windows version 5.2.16
Cairo Version: 1.8.8
Rendering Mode: OpenGL requested (create a diagram to confirm)
OpenGL Driver Version: 2.0.6465 Release
OS: Microsoft Windows Vista Home Premium Edition (build 6000), 32-bit
CPU: 2x AMD Athlon(tm) 64 X2 Dual Core Processor 4400+, 1.8 GiB RAM
Video adapter info:
Adapter type: 
Chip Type: ATI Radeon X1200 Series (0x791E)
BIOS String: BK-ATI VER011.
Video Memory: 262144 KB

How to repeat:
Using the "Create EER Model from Existing Database" functionality
[3 Mar 2010 9:58] Arnaud Jacquemin

Attachment: exception.png (image/png, text), 95.38 KiB.

[3 Mar 2010 14:23] Johannes Taxacher
Does this happen on different/every schema you are trying to reverse engineer or does it seem to appear schema/object specific? could you maybe add a dump of the schema to this report (you can mark uploaded files as private if you don't them to be publicly available).
thanks in advance
[8 Mar 2010 16:11] Arnaud Jacquemin
This happens on every schema. In fact I do not have to reverse engineer : the simplest way to repeat this bug on my computer is
- Create new EER model
- Add diagram
and then the "Unknown Exception" dialog appears.
There is a strange graphic behavior too : the window doesn't seem to repaint anymore.
[10 Mar 2010 10:59] Susanne Ebrecht
Please attache the stack trace.


"If the product is crashing, include a backtrace. Instructions for doing this can be found here. "

[11 Mar 2010 15:30] Arnaud Jacquemin
WB doesn't crash, it just repeatedly popup the dialog shown in the screen shot, and erroneously repaint its UI.

Is a stacktrace relevant in this case? If so, can you give me an easy way of doing that?
[16 Apr 2010 13:39] Valeriy Kravchuk
Please, check if the problem is repeatable with a newer version, 5.2.18, and inform about the results.
[16 May 2010 23:00] Bugs System
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".