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From "Salikh Zakirov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-2798) [drlvm] VM cunit test test_native_basic sometimes crashes on win32 SMP
Date Fri, 22 Dec 2006 13:34:22 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-2798?page=comments#action_12460467 ] 
            
Salikh Zakirov commented on HARMONY-2798:
-----------------------------------------

Strangely, I wasn't able to reproduce the issue on Windows Server 2003sp0 on a HT Pentium
4.
The test worked in the loop for a day, and did not fail once in 7908 iterations.

> [drlvm] VM cunit test test_native_basic sometimes crashes on win32 SMP
> ----------------------------------------------------------------------
>
>                 Key: HARMONY-2798
>                 URL: http://issues.apache.org/jira/browse/HARMONY-2798
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: Windows 2003 server on P4 with HT enabled
>            Reporter: Gregory Shimansky
>
> The test test_native_basic fails on windows from time to time in 3 different ways. The
most common way is to exit silently on shutdown while function main has returned 0, and all
tests passed. Two other ways are access to non-writable memory and MS debug CRT heap validation
on shutdown.
> In all 3 cases I cannot debug the program because it fails after function main has finished.
Looks like some race condition causes memory corruption. Probably running the program from
under VS.NET could help to debug it.
> To run the test many times I've written the following script in cygwin bash:
> i=0; while true; do ./test_native_basic.exe -Dorg.apache.harmony.vm.vmdir=d:/work/harmony/enhanced/trunk/working_vm/build/win_ia32_msvc_debug/deploy/jdk/jre/bin/default
-Djava.home=d:/work/harmony/enhanced/trunk/working_vm/build/win_ia32_msvc_debug/deploy/jdk/jre;
ec=$?; echo $i $ec; test $ec != 0 && break; i=$[i+1]; done
> Note, to run test_native_basic in console you need to set PATH to DRLVM bin and bin/default
directories.
> Note2, it looks like this bug requires SMP or at least HT enabled system, and is not
reproducible on single processor computers like laptops.

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