Re: Re: ArrayIndexOutOfBoundsException at Frame.merge/MethodWriter.visitMaxs

Peter Veentjer <[email protected]>
Newsgroups gmane.comp.java.objectweb.asm
Message-ID <[email protected]>



On 9 nov 2009, at 20:27, Tronje Krop <[email protected]>  
wrote:

> Hi Peter,
>
> have you checked, whether L11 has multiple entry points that
> differ in stack size?

Hi tronje thanks for your help

What do you mean with 'entrypoint'?

And where can i find the stacksize information? These are the  
frame.inputstacktop and frame.outputstackmax fields?


> Or your L2 for jumping back has multiple
> goto's that my is not balanced ...
>
> I had similar problems, designing my rewritten code.
>
> Best regards
>
> Tronje
>
> Peter Veentjer wrote:
>> You could be on the right track because i get this error when i
>> introduce a jump
>>
>> Before
>>
>> L0
>> Invokestatic gettransaction
>> Astore 1
>> L1
>> Aload 0
>> Aload 1
>> Invokespecial someconstructor
>> L2
>> Return
>> L3
>>
>> After
>>
>> L0
>> Invokespecial gettransaction
>> Astore 1
>> L1
>> Aload 0
>> Aload 1
>> Invokespecial someconstructor
>> Goto l1
>> L2
>>
>> Both look fine to me, do you see something strange?
>>
>> Ps
>> I'm working on adding some transaction advice on objects (including
>> constructors) and i have removed all code that wasnt needed to
>> reproduce the bug
>>
>> On 9 nov 2009, at 14:02, David Chase <[email protected]> wrote:
>>
>>> I think this is the diagnostic that means "you didn't balance pushes
>>> and pops on the two branches of an if/backedge".  I would look for
>>> that, at least.
>>>
>>> David
>>>
>>> On 2009-11-09, at 7:40 AM, Peter Veentjer wrote:
>>>
>>>> Hi Guys,
>>>>
>>>> I get an ArrayIndexOutOfBoundsException
>>>>
>>>> java.lang.ArrayIndexOutOfBoundsException: 0
>>>>   at org.objectweb.asm.Frame.merge(Frame.java:1373)
>>>>   at org.objectweb.asm.Frame.merge(Frame.java:1350)
>
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