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From: grunwald@FOOBAR.COLORADO.EDU (Dirk Grunwald)
Newsgroups: gnu.g++.bug
Subject: sizeof(Class) vs. size passed to Class::new
Message-ID: <8910171841.AA07303@foobar.colorado.edu>
Date: 17 Oct 89 18:41:35 GMT
Sender: daemon@tut.cis.ohio-state.edu
Reply-To: grunwald@foobar.colorado.edu
Distribution: gnu
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If you define an overloaded new, you're passed the size of the
structure you are to allocate.

In the latest g++.xtar.Z, this differs from the value returned via
``sizeof'' for that class. Is this intentional?

For example, in one class I have, operator new is passed a size of 183
while sizeof returns 176.

Does the sizeof() operator omit space for vtable pointers? Why 7 bytes
different?

Is this a bug or a feature?

Dirk Grunwald -- Univ. of Colorado at Boulder	(grunwald@foobar.colorado.edu)