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[text] crash on long lines
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Ian Gay
May 14, 2012, 3:15:23 PM5/14/12
to
I think I have found a way to crash Tk on linux by
displaying long lines in a text widget. At the moment
I only have access to OpenSuse 11.4. Could people try the
short program below, and see if the problem is more general?
----------------- cut here --------------------
# program to exhibit the text long line crash.
#
# With KDE on Linux, the KDE session crashes and returns to the
# display manager.
#
# there is no crash if [update idletasks] is omitted
#
# Running KDE 3.5 on OpenSuse 11.4
# With tk8.6b2 crash occurs with 895 in the log file.
# 8.5.9 also produces 895
# KDE 4.8 produces same result
# ICEWM also crashes back to display manager with a count of 895
# with a font size of 22, crash at count of 448, vs 895 with size 11.
# Looks like a crash at a fixed pixel width ... 8192?
pack [text .t -width 80 -height 20 -wrap none -font {courier 11}]
set n 0
while {1} {
.t insert end "Q"
update idletasks
set fd [open "tk_crash" w]
incr n
puts $fd $n
close $fd
}
displaying long lines in a text widget. At the moment
I only have access to OpenSuse 11.4. Could people try the
short program below, and see if the problem is more general?
----------------- cut here --------------------
# program to exhibit the text long line crash.
#
# With KDE on Linux, the KDE session crashes and returns to the
# display manager.
#
# there is no crash if [update idletasks] is omitted
#
# Running KDE 3.5 on OpenSuse 11.4
# With tk8.6b2 crash occurs with 895 in the log file.
# 8.5.9 also produces 895
# KDE 4.8 produces same result
# ICEWM also crashes back to display manager with a count of 895
# with a font size of 22, crash at count of 448, vs 895 with size 11.
# Looks like a crash at a fixed pixel width ... 8192?
pack [text .t -width 80 -height 20 -wrap none -font {courier 11}]
set n 0
while {1} {
.t insert end "Q"
update idletasks
set fd [open "tk_crash" w]
incr n
puts $fd $n
close $fd
}
tomás zerolo
May 14, 2012, 4:43:28 PM5/14/12
to
Ian Gay <g...@sfu.ca> writes:
> I think I have found a way to crash Tk on linux by
> displaying long lines in a text widget. At the moment
> I only have access to OpenSuse 11.4. Could people try the
> short program below, and see if the problem is more general?
Went up to > 10000 for tk 8.4, 8.5 and 8.6. Doesn't crash for me. But
> I think I have found a way to crash Tk on linux by
> displaying long lines in a text widget. At the moment
> I only have access to OpenSuse 11.4. Could people try the
> short program below, and see if the problem is more general?
note that this is on a 64 bit system (Debian GNU/Linux Wheezy:
Linux rasputin 3.1.0-1-amd64 #1 SMP Mon Nov 14 08:02:25 UTC 2011 x86_64
GNU/Linux
HTH
-- tomás
Ian Gay
May 14, 2012, 4:52:17 PM5/14/12
to
Intel 965.
Ian
tomás zerolo
May 17, 2012, 9:11:19 AM5/17/12
to
>>> I think I have found a way to crash Tk on linux [...]
>> Went up to > 10000 for tk 8.4, 8.5 and 8.6. Doesn't crash for me. [...]
> Interesting. Mine is also 64 bit. What's your video? Mine is
> Intel 965.
It's VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
Wrestler [Radeon HD 6310] (prog-if 00 [VGA controller]), as reported by
lspci (it's one of those ATI-on-AMD-processor graphics "cards" (an AMD
E-350), on a Lenovo Ideapad S-205
Regards
-- tomás
>> Went up to > 10000 for tk 8.4, 8.5 and 8.6. Doesn't crash for me. [...]
> Interesting. Mine is also 64 bit. What's your video? Mine is
> Intel 965.
Wrestler [Radeon HD 6310] (prog-if 00 [VGA controller]), as reported by
lspci (it's one of those ATI-on-AMD-processor graphics "cards" (an AMD
E-350), on a Lenovo Ideapad S-205
Regards
-- tomás
Ian Gay
May 17, 2012, 11:44:48 AM5/17/12
to
graphics. The crash does no occur there. I'm kind of suspecting
the video driver on my old core2 system (which crashes) - but it's the
stock OpenSuse driver, and you might imagine it would be
widely known if it were buggy. ???
Ian
--
*********** To reply by e-mail, make w single in address **************
tomás zerolo
May 19, 2012, 3:50:09 AM5/19/12
to
Ian Gay <g...@sfuu.ca> writes:
> I now have access to my sandy bridge system, using the on-chip
> graphics. The crash does no occur there. I'm kind of suspecting
> the video driver on my old core2 system (which crashes) - but it's the
> stock OpenSuse driver, and you might imagine it would be
> widely known if it were buggy. ???
Random crashes of video drivers due to some exotic things some GUI
> I now have access to my sandy bridge system, using the on-chip
> graphics. The crash does no occur there. I'm kind of suspecting
> the video driver on my old core2 system (which crashes) - but it's the
> stock OpenSuse driver, and you might imagine it would be
> widely known if it were buggy. ???
toolkits do sometimes are not unheard of. Makes me shudder to think of it.
Regards
-- tomás
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