[Axiom-developer] [#148 Down-arrow button in examples can crash session] (new) Down-arrow button in examples can crash session

[mdc]

Changes 
http://page.axiom-developer.org/zope/mathaction/148DownArrowButtonInExamplesCanCrashSession/diff
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Axiom 3.4 (April 2005), compiled and running under SuSE 9,2,

This is an intermittent fault, happening more than half the time. Occurs 
when logged in at console, also when logged in by ssh with X-forwarding 
(from SuSE 9.1), and from a Win PC by Hummingbird exceed. Nothing is 
logged in .xsession-errors.

Details:
Axiom is
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                        AXIOM Computer Algebra System 
                       Version: Axiom 3.4 (April 2005)
               Timestamp: Tuesday April 19, 2005 at 13:46:32 
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O/S is
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address@hidden:~> uname -a
Linux bmnew 2.6.8-24.14-smp #1 SMP Tue Mar 29 09:27:43 UTC 2005 i686 i686 
i386 GNU/Linux
address@hidden:~> cat /etc/SuSE-release 
SuSE Linux 9.2 (i586)
VERSION = 9.2
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Environment is
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address@hidden:~> echo $AXIOM
/usr/local/axiom/mnt/linux
address@hidden:~> export PATH=${AXIOM}/bin:$PATH
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And a run looks like...
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address@hidden:~> axiom
                        AXIOM Computer Algebra System 
                       Version: Axiom 3.4 (April 2005)
               Timestamp: Tuesday April 19, 2005 at 13:46:32 
-----------------------------------------------------------------------------
   Issue )copyright to view copyright notices.
   Issue )summary for a summary of useful system commands.
   Issue )quit to leave AXIOM and return to shell.
-----------------------------------------------------------------------------
 
   Re-reading compress.daase   Re-reading interp.daase
   Re-reading operation.daase
   Re-reading category.daase
   Re-reading browse.daase
(1) -> 
(1) -> )q
   Please enter y or yes if you really want to leave the interactive 
      environment and return to the operating system:
y


address@hidden:~> 
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Actions to reproduce fault:
1) Start axiom, as above.
2) In HyperDoc window, click on "Examples", then in next window on 
"Graphics", then on "Assorted Examples". Now click on the first down-arrow 
icon, following "Function of two variables: z=f(x,y)". (Also happens for 
other examples, of course.)

More than half the time, all windows vanish, except for the initial 
terminal window (in which one typed "axiom").

There are no error messages.

HOWEVER: If instead of clicking on the down-arrow, one clicks on the 
"draw" command next to it, the command executes in a new terminal window 
without problem. Clicking on the down-arrow subsequently displays the 
graph in-line, with no crash.

Also, typing that draw command into the original terminal window, one gets 
a plausible graph. 
__________________________________________________________________________

Have fun,
        Cheers, Mark.


+---------------------------------------------------------------------------+
|  Dr M.D. Cahill, Dept. of Computer Science, Tel. +44 (0)1225 383084       |
|  University of Bath, BATH, BA2 7AY.         Fax. +44 (0)1225 383493       |
|  address@hidden address@hidden                                  |
+---------------------------------------------------------------------------+

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