0000471: Use of sys.stdout with pythonw.exe causes silent crash (uncaught IOError)

ID	Project	Category	View Status	Date Submitted	Last Update

0000471	ascend	pygtk gui	public	2010-07-20 14:29	2011-02-22 17:34

Reporter	john
Assigned To	john
Priority	high	Severity	crash	Reproducibility	always
Status	assigned	Resolution	open
Product Version
Target Version	1.0	Fixed in Version

Summary	0000471: Use of sys.stdout with pythonw.exe causes silent crash (uncaught IOError)
Description	We need to avoid using 'print' and 'sys.stdout' while ASCEND is loading, becuase if 4096 bytes or more are output, the program silently crashes. Firstly, we need to add an exception handler so that silent crashes are impossible. Secondly, we need to change our use of 'print' and 'sys.stdout' to something more sophisticated that avoids the potential problem. This problem seems to have emerged in preparation of 0.9.8 for release.
Tags	No tags attached.

Date Modified	Username	Field	Change
2010-07-20 14:29	john	New Issue
2010-07-20 14:30	john	Product Version	0.9.7 =>
2010-07-20 14:30	john	Target Version	=> 0.9.8
2010-07-20 14:30	john	Status	new => assigned
2010-07-20 14:30	john	Assigned To	=> john
2010-07-21 20:37	john	Note Added: 0000653
2010-08-02 23:12	john	Note Added: 0000660
2011-02-22 17:34	john	Target Version	0.9.8 => 1.0

john 2010-07-21 20:37 administrator ~0000653	partial fix in changeset 2955.

john 2010-08-02 23:12 administrator ~0000660	still to be done: implement the ctypes MessageBox error output for any unforeseen crashes on pythonw.