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Re: Incomplete Types

To: robertlipe at usa dot net
Subject: Re: Incomplete Types
From: "Martin v. Loewis" <martin at mira dot isdn dot cs dot tu-berlin dot de>
Date: Thu, 1 Apr 1999 22:09:31 +0200
CC: lkuczyns at emc dot com, egcs at egcs dot cygnus dot com, lesliek at emc dot com
References: <199904011425.JAA02153@lns0108.lss.emc.com> <19990401095721.K181@rjlhome.sco.com>

> Your testcase compiles without complaint on UnixWare 7.1.0 CC and on
> the development snapshot of EGCS as of this morning.
> 
> So, without actually understanding the code, I'm guessing you just ran
> into a C++ feature that hadn't been implemented in EGCS 1.1.2.

Yes. egcs 1.1 apparently did not expect that you could ever legally
form a pointer-to-member in an incomplete class. You can, if you pass
it as a template parameter, as Leslie's example demonstrates. It looks
like this was fixed by

1998-10-06  Mark Mitchell  <mark@markmitchell.com>

	* init.c (build_offset_ref): Do lookup even for classes that are
	only partially defined.

A ChangeLog is a great thing :-)

Regards,
Martin

References:
- Incomplete Types
  - From: Leslie Kuczynski
- Re: Incomplete Types
  - From: Robert Lipe

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