[Fwd: Request for review (S): 6865265 JVM crashes with "missing exception handler" error]

Keith McGuigan keith.mcguigan at oracle.com
Mon Jul 25 11:18:01 PDT 2011

I think the code looks ok, but why not use a Handle for the  
"original_exception" in runtime.cpp -- then you don't need to worry  
about the GC case either.

As to the question about the verifier comparing by name, this is  
correct (in that this is what the verifier spec requires, IIRC), but  
intuitively it makes sense anyway because the class's current class  
loader is the initiating loader for any referenced class that might  
need to be loaded.  Thus two different references to classes with the  
same name will always resolve to the same class implementation so a  
system dictionary lookup is unnecessary.  The verifier actively  
attempts to NOT load or initialize classes when it can, but in some  
cases it must, unfortunately.

- Keith

On Jul 25, 2011, at 1:14 PM, Vladimir Kozlov wrote:

> Forwarding to RT since runtime code is also involved.
> Vladimir
> -------- Original Message --------
> Subject: Request for review (S): 6865265 JVM crashes with "missing  
> exception handler" error
> Date: Mon, 25 Jul 2011 18:58:58 +0200
> From: Volker Simonis <volker.simonis at gmail.com>
> To: hotspot compiler <hotspot-compiler-dev at openjdk.java.net>
> Although I've found a tiny test case for 6865265 and a small fix for
> the problem, I'm still not sure if my fix is complete.
> I would appreciate it very much if somebody could review my (somewhat
> lengthy) explanation for the fix and answer the two questions I
> encountered.
> Both, the explanation of the fix and the questions are in the webrev  
> at:
> http://www.progdoc.de/webrev/6865265/
> Regards,
> Volker

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