Segfault seemingly related to loop unswitching optimization

Vladimir Kozlov vladimir.kozlov at oracle.com
Fri Aug 9 08:47:13 PDT 2013


Hi Adam

Our related bug is:

http://bugs.sun.com/view_bug.do?bug_id=8021898

I am working on the fix, should be done soon. The problem is in Register Allocator.

Regards,
Vladimir

On 8/9/13 8:16 AM, Adam Domurad wrote:
> Hello all. There is a bug filed on Red Hat bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=982801
>
> To quote from the bug report:
>
>> To reproduce download the code from https://github.com/rholder/jvm-loop-unswitching-bug, then run "./gradlew build".
>> JVM crashes will occur during the test.
>>
>> As noted on the github page, adding -XX:-LoopUnswitching stops the problem occurring.
>
> It seems to affect both OpenJDK & Oracle's JDK. Does anyone know of the status of this bug ? Has anything been filed ?
>
> Best regards,
> -Adam


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