bugMIT/GNU Scheme - Bugs: bug #24253, possible race condition in Edwin X...


bug #24253: possible race condition in Edwin X debugger screen creation/deletion

Submitter:  Taylor R. Campbell <riastradh>
Submitted:  Sat 13 Sep 2008 10:11:19 AM UTC
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open
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Sat 13 Sep 2008 10:11:19 AM UTC, original submission:  

Cause an error that brings up a debugger screen in X.  Hit `p' to choose a restart.  Hit `C-g' to abort the choice.  I observe some flickering of screens and then a new debugger screen presenting the error:

;The object 2, passed as the first argument to xterm-map-y-size, is not in the correct range.

Re-evaluating the call to XTERM-MAP-Y-SIZE in one of the debugger's REPLs yields the expected numeric result, so the editor's X terminals appear to be briefly desynchronized from the microcode's.  This is reproducible enough that it may not even be a race condition so much as merely disordered event processing somewhere.

Taylor R. Campbell <riastradh>
Group Member


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