Pointer on clean card crosses boundary

[Gary Benson]

Hi Tony,

I'm working on a new compiler, which uses a third-party compiler
toolkit (LLVM) rather than generating machine code directly.  I'm
guessing I either allocated something incorrectly or I generated
a broken oopmap, but I just wondered if there's some common thing
that people do that would cause this error?

Cheers,
Gary

Tony Printezis wrote:
> Gary,
> 
> I assume that the error happens with your changes? Can you give us a 
> quick description of what your changes involve?
> 
> Tony
> 
> Gary Benson wrote:
> > Hi all,
> > 
> > I'm working on some additions to HotSpot, and I just found the
> > VerifyBeforeGC and VerifyAfterGC options.  I tried them, but I'm
> > seeing this failure:
> > 
> >   #  Internal Error (/home/gbenson/mixtec/openjdk-ecj/hotspot/src/share/vm/memory/cardTableRS.cpp:301), pid=19185, tid=3516646576
> >   #  Error: guarantee(*p == __null || (HeapWord*)p < boundary || (HeapWord*)(*p) >= boundary,"pointer on clean card crosses boundary")
> > 
> > Does anyone know what I might be doing to cause this error?
> > 
> > Cheers,
> > Gary
> 
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