RFR(S): 8160276 - Jittester: bytecode tests generation hangs in ClassWriter infinite loop

[Dmitrij Pochepko]

Hi.

It hangs in at jdk.internal.org.objectweb.asm.MethodWriter.visitMax 
infinite loop when calculating max stack. A respective task for 
investigating this particular issue has been created (JDK-8160673). 
However, in order to have jittester tests generation more stable in 
general for automatic tests generation, a patch for current 
issue(JDK-8160276) is needed.

Thanks,
Dmitrij
> But why does it hang?
>
> igor
>
>> On Jun 30, 2016, at 10:02 AM, Dmitrij Pochepko <Dmitrij.Pochepko at Oracle.COM> wrote:
>>
>> Hi,
>>
>> please review fix for 8160276 - Jittester: bytecode tests generation hangs in ClassWriter infinite loop
>>
>> Jittester hangs in rare cases of specific seeds, so, fix launch test generation in separate thread and check for generation timeout. Test is generated again with next seed in case timeout was hit.
>>
>> webrev: http://cr.openjdk.java.net/~dpochepk/8160276/webrev.01/
>> CR: https://bugs.openjdk.java.net/browse/JDK-8160276
>>
>> I've tested it locally on linux-amd64.
>>
>> Thanks,
>> Dmitrij

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