Tcl Source Code

% puts $tcl_patchLevel
8.4.12
% array get tcl_platform
osVersion 5.1 byteOrder littleEndian threaded 1 machine
intel platform windows os {Windows NT} user souellet
wordSize 4

The following code often cause the interpreter to crash
in winpipe.c at line 913 or 2529.

I am running on Windows XP. The crash does not happend
on unix.

Logged In: YES 
user_id=72656

This was a Thread bug in AppExitHandler - it was looping on
exit, accessing the next item in a list that we had just
spliced out and freed.  Fixed post-2.6.3.

Logged In: YES 
user_id=1456166

sdhn       tyyy yt yz

Logged In: YES 
user_id=72656

Confirmed crash with panic:

Tcl_Release couldn't find reference for 0xf18860

Logged In: YES 
user_id=1447062

I just tried it with tkcon, it does not happens.
Try it with tclsh:

tclsh test_crash2.tcl

File Added - 166678: test_crash2.tcl

Logged In: YES 
user_id=1447062

It seem it doesn't happens all that often. I modified the
test  program. This new version runs until it crashs, it
usually takes less than 15 sec.

Logged In: YES 
user_id=72656

I have no problem using ActiveTcl 8.4.12.0:
(using tkcon, if that makes a difference)

(bin) 23 % source C:/temp/dl/test_crash.tcl
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(bin) 24 % source C:/temp/dl/test_crash.tcl
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(bin) 24 % source C:/temp/dl/test_crash.tcl
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13 17 19 20
15 18

File Added - 166657: test_crash.tcl