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From: "Karl Kobata" <karl.kobata@syncira.com>
To: "'Ian Lance Taylor'" <iant@google.com>
Cc: <gcc-help@gcc.gnu.org>
Subject: RE: compile error on template using gcc 3.4.4 that worked for gcc 3.3.x
Date: Fri, 11 May 2007 22:03:00 -0000
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Ian,

You are correct.  I added "this->".  It corrected the errors I was getting.

Thanks very much.
karl

-----Original Message-----
From: Ian Lance Taylor [mailto:iant@google.com]=20
Sent: Wednesday, May 09, 2007 4:59 PM
To: Karl Kobata
Cc: gcc-help@gcc.gnu.org
Subject: Re: compile error on template using gcc 3.4.4 that worked for gcc
3.3.x

"Karl Kobata" <karl.kobata@syncira.com> writes:

> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D source that is erroring =3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> 36 template<class T> class OutputBuffer : public Buffer<T> {
> 37 public:
> 38 =A0=A0=A0virtual int Flush() =3D 0;
> 39=A0 =A0=A0virtual int Put(const T& t) { *pt++ =3D t; return pt >=3D end=
 ? Flush()
:
> 0; }
> 40 =A0=A0=A0OutputBuffer(unsigned int sz):Buffer<T>(sz) { pt =3D base; }
> 41 =A0=A0=A0OutputBuffer(T* b, unsigned int sz):Buffer<T>(b, sz) { pt =3D=
 base; }
> 42 =A0=A0=A0OutputBuffer() { pt =3D base; }
> 43 =A0=A0=A0~OutputBuffer() {}
> 44 };
>=20
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D error messages using gcc 3.4.4 =3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> /home/AppsTest/MGen/MgenLibrary/aeg/include/generic/buffer.h:39: error:
`pt'
> undeclared (first use this function)

I don't see any declaration of 'pt' in the above code snippet.

If 'pt' is declared in the base class, then you need to say
"this->pt".  To see why, search the net for "two-phase lookup."  gcc
3.4 implemented a new C++ parser which is much more standards
compliant.

Ian