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[Bug c++/15531] dynamic_cast fails (at runtime) when dependant on friendship of invoker
- From: "gdr at integrable-solutions dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 May 2004 01:15:04 -0000
- Subject: [Bug c++/15531] dynamic_cast fails (at runtime) when dependant on friendship of invoker
- References: <20040518232016.15531.gccbugs@contacts.eelis.net>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From gdr at integrable-solutions dot net 2004-05-19 01:15 -------
Subject: Re: dynamic_cast fails (at runtime) when dependant on friendship of invoker
"gccbugs at contacts dot eelis dot net" <gcc-bugzilla@gcc.gnu.org> writes:
| I see, thanks for clearing that up.
| In this case, would it not be desirable to have gcc emit an error/warning
| indicating that the cast will always fail since Base is not a public
| base class of Derived?
yes, it could -- not in all cases -- but this is certainly a case when
the answer is known at translation time. The PR could be open as
diagnostic enhancement and the subject changed to reflect the outcome
ot this discussion.
-- Gaby
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15531