[Vm-dev] Recent Cog crashes with AndreasSystemProfiler
J. Vuletich (mail lists)
juanlists at jvuletich.org
Mon Jul 20 17:16:09 UTC 2015
Hi Eliot, Folks,
I found that recent Cog VMs crash when using AndreasSystemProfiler.
I'm using Cuis https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev ,
but could reproduce the problem in Squeak4.6-15078 and
AndreasSystemProfiler from
http://ss3.gemstone.com/ss/AndreasSystemProfiler.html . I tried on
Windows 7 and Linux Debian Jessie and saw similar behavior. I could
try on a Mac if helpful.
To reproduce the problem, evaluate this, several times. Usually
crashes after 4 or 5 tries:
AndreasSystemProfiler spyOn:[10000 timesRepeat: [3.14159 printString]]
This does _not_ crash in coglinux-15.22.3370 or cogwin-15.22.3370
(from June 4th). With this VM I can evaluate the expression over 40
times and never saw a crash.
It does crash on the newer release: cogwin-15.24.3386 and
coglinux-15.24.3386. It also crashes on the very latest
cogwin-15.28.3410 and coglinux-15.28.3410. I tried on one machine with
Win7 and Linux and on another PC with Win7. Results were consistent.
All the crash dumps are at
https://www.dropbox.com/sh/juewbluobhciejh/AABjvOKULw9mZNvlVg3t8Dyga?dl=0
..
The Linux crash files include these lines at the end:
stack page bytes 4096 available headroom 2788 minimum unused
headroom 3004
(Segmentation fault)
The Windows crash files include a "Stack backtrace" and a "Smalltalk
stack dump".
Thanks in advance for your help.
Regards,
Juan Vuletich
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