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From "Gregory Shimansky (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-2798) [drlvm] VM cunit test test_native_basic sometimes crashes on win32 SMP
Date Tue, 19 Dec 2006 15:58:21 GMT
[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
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

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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