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Date: Thu, 20 Feb 2014 20:49:00 -0000
From: Jason Merrill <jason@redhat.com>
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To: Richard Biener <rguenther@suse.de>, Jan Hubicka <hubicka@ucw.cz>
CC: gcc@gcc.gnu.org
Subject: Re: TYPE_BINFO and canonical types at LTO
References: <20140214004827.GA30858@kam.mff.cuni.cz> <alpine.LSU.2.11.1402140937310.1593@zhemvz.fhfr.qr> <20140214165219.GA3380@kam.mff.cuni.cz> <20140214232252.GA14384@kam.mff.cuni.cz> <alpine.LSU.2.11.1402151106530.1593@zhemvz.fhfr.qr>
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On 02/15/2014 05:09 AM, Richard Biener wrote:
> On Sat, 15 Feb 2014, Jan Hubicka wrote:
>> The code really seems to be adding only cases of zero sized classes.
>
> zero-size as in with no fields?  Then we can't do anything with such
> classes and thus we don't need to record component aliases?

Right.  The TYPE_SIZE of an empty class is still 1, but a base of such a 
type doesn't get a FIELD_DECL.

Jason