C++ FE question: When is CLASSTYPE_VBASECLASSES valid?

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C++ FE question: When is CLASSTYPE_VBASECLASSES...
\ Doug Kwan (關振德) (7 Mar 2008)
. \ Mark Mitchell (20 Mar 2008)
. . \ Doug Kwan (關振德) (20 Mar 2008)

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Subject:	C++ FE question: When is CLASSTYPE_VBASECLASSES valid?
Group:	Gcc
From:	Doug Kwan (關振德)
Date:	7 Mar 2008

Hi,

I have a question about the validity of CLASSTYPE_VBASECLASSES.
Due to templates, it is not possible to know if a class has virtual
bases or not until the class is fully instantiated. Is checking
processing_template_decl sufficient to guarantee that
CLASSTYPE_VBASECLASSES is valid?

Thanks.

-Doug