[Tcl-bugs] [ expect-Bugs-2866410 ] crash with multiple interpreters

[SourceForge.net <no...@so...>]

Bugs item #2866410, was opened at 2009-09-25 02:19
Message generated for change (Comment added) made by andreas_kupries
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=113179&aid=2866410&group_id=13179

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: None
Status: Open
Resolution: None
Priority: 7
Private: No
Submitted By: Donal K. Fellows (dkf)
Assigned to: Andreas Kupries (andreas_kupries)
Summary: crash with multiple interpreters

Initial Comment:
[09:24]	<dihedral>	child interps... think that will be a nogo
[09:25]	<dihedral>	we are using expect, which is not interp safe
[09:27]	dkf	(why isn't it interp-safe? that should be easy. no time to investigate though)
[09:27]	<dihedral>	just have seen tcl crashing due to badly mixing interps and expect
[09:28]	<dihedral>	it will crash as soon as you require expect in 2 interps 

----------------------------------------------------------------------

>Comment By: Andreas Kupries (andreas_kupries)
Date: 2009-10-07 11:20

Message:
idleminds, are you able to provide more information, i.e. version of
Expect, version of Tcl, and a Tcl script demonstrating the crash ?


----------------------------------------------------------------------

Comment By: Evan (idleminds)
Date: 2009-10-07 11:12

Message:
I experience tcl crashing when I require Expect in more than one thread.
Unfortunate as I want to make a multithread Expect application.

----------------------------------------------------------------------

Comment By: Nathanael Rebsch (rebschn)
Date: 2009-09-30 02:59

Message:
interesting, this time when i ran the code, tcl did not crash on me,
however
the second interp does not have the channels expect opens on package
require!


----------------------------------------------------------------------

Comment By: Andreas Kupries (andreas_kupries)
Date: 2009-09-28 14:45

Message:
I understand, and hope that dihedral will post more information here.


----------------------------------------------------------------------

Comment By: Donal K. Fellows (dkf)
Date: 2009-09-26 05:40

Message:
(I'm just the messenger; it was dihedral who had the problem.)

----------------------------------------------------------------------

Comment By: Andreas Kupries (andreas_kupries)
Date: 2009-09-25 09:05

Message:
Tried to reproduce the problem using the attached script 'exmulti.tcl'.
I see no crash.
The output of the script on my system (linux-glibc2.3-ix86) is:

    Tcl    8.4.19
    Expect 5.44.1.14 (main)
    Sub-Interp interp0
    Expect 5.44.1.14 (sub)
    Wait 5
    Exit

Please clarify (platform, version of expect, version of Tcl, demo script,
did the demo script work with other versions of Expect and/or Tcl ?, ...).


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=113179&aid=2866410&group_id=13179