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To: "Frank Chow" <fzhou@mtone.com.cn>
Cc: "gcc-bugs@gcc.gnu.org" <gcc-bugs@gcc.gnu.org>
Subject: Re: GCC 3.4.0: a derived class can't access the data member of a template base class
References: <SERVER05tX60LUDA1Xi00000d5a@server05.mtone.com.cn>
From: Alexandre Oliva <aoliva@redhat.com>
Organization: Red Hat Global Engineering Services Compiler Team
Date: Mon, 21 Jun 2004 16:50:00 -0000
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> template <typename T> struct D : public T { D() { nSize = sizeof(T);
> } };


nSize is not a template-dependent name, so it's bound at parse time,
rather than at template instantiation time.  You must use this->nSize
or T::nSize to make it template-dependent.

> By the way, gcc (GCC) 3.3.1 (cygwin version) can compile this code
> successfully

That was a bug, fixed in 3.4.

> so do Visual C++ .Net (cl v 13.10.3077).

You'll have to report this bug to someone else, then :-)

-- 
Alexandre Oliva             http://www.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer   aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist  oliva@{lsd.ic.unicamp.br, gnu.org}