[Vm-dev] Pharo 6 Segmentation fault on Travis OS X

[Juraj Kubelka]

Hi,

I have noticed that Pharo 6 VM is quite unstable on OS X. I do not face it on my desktop, but my Travis CI builds are mostly broken. See the example here: https://travis-ci.org/JurajKubelka/PharoSprint/jobs/224161107#L258 <https://travis-ci.org/JurajKubelka/PharoSprint/jobs/224161107#L258> 

 <>Segmentation fault Thu Apr 20 23:31:54 2017
 <>
 <>
 <>VM: 201702221539 https://github.com/pharo-project/pharo-vm.git <https://github.com/pharo-project/pharo-vm.git> $ Date: Wed Feb 22 16:39:40 2017 +0100 $
 <>Plugins: 201702221539 https://github.com/pharo-project/pharo-vm.git <https://github.com/pharo-project/pharo-vm.git> $
 <>
 <>C stack backtrace & registers:
 <>	eax 0x00000000 ebx 0x044f9014 ecx 0x044f9014 edx 0x00000000
 <>	edi 0x044f7a7d esi 0x044f7a7d ebp 0xbffabae8 esp 0xbffabaa0
 <>	eip 0x000689e6
 <>0   Pharo                               0x000689e6 bytecodePCForstartBcpcin + 195
 <>1   Pharo                               0x000961be reportStackState + 706


The same build task is stable on Windows and Linux.

If some of the builds are green, it is because I have restarted the job, typically several times. 

There is also this issue at the beginning of the log: https://travis-ci.org/JurajKubelka/PharoSprint/jobs/224161107#L84 <https://travis-ci.org/JurajKubelka/PharoSprint/jobs/224161107#L84> 


62.56sDownloading the latest pharoVM:
 <>	http://files.pharo.org/get-files/60/pharo-mac-stable.zip <http://files.pharo.org/get-files/60/pharo-mac-stable.zip>
 <>pharo-vm/Pharo.app/Contents/MacOS/Pharo
 <>Downloading PharoV60.sources:
 <>	http://files.pharo.org/get-files/60/sources.zip <http://files.pharo.org/get-files/60/sources.zip>
 <>Creating starter scripts pharo and pharo-ui
 <>2017-04-20 23:30:25.180 Pharo[2532:5750] 23:30:25.180 ERROR:    312: error -66680
 <>2017-04-20 23:30:25.182 Pharo[2532:5750] 23:30:25.182 ERROR:    >aq> 1630: failed (-66680); will stop (5512/0 frames)
 <>2017-04-20 23:30:25.184 Pharo[2532:5750] 23:30:25.184 ERROR:    312: error -66680
 <>2017-04-20 23:30:25.184 Pharo[2532:5750] 23:30:25.184 ERROR:    >aq> 1630: failed (-66680); will stop (33075/0 frames)
 <>
Any idea how can it be improved? Or how can I debug it in order to provide more information? 

Thanks!
Juraj


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