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Re: Macro expansion and the preprocessor

From: Adam Mercer <ramercer at gmail dot com>
To: Jonathan Wakely <jwakely dot gcc at gmail dot com>
Cc: GCC Help <gcc-help at gcc dot gnu dot org>
Date: Fri, 14 Jan 2011 12:59:15 -0600
Subject: Re: Macro expansion and the preprocessor
References: <AANLkTimLFMewxcJNn0idyFfgPhkFMK==kCikdfBFtzXF@mail.gmail.com> <AANLkTikCM-qmDr4jUp2eTeCvE0M4vU0VGXD9b60okb-s@mail.gmail.com>

On Fri, Jan 14, 2011 at 12:31, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:

> The problem is that the ## operator doesn't expand its arguments, so
> TYPE is used verbatim.
>
> You need to add some levels of indirection, so that GTYPE expands to a
> macro which expands TYPE, and passes that to another macro which does
> the concatenation.

Thanks a lot, that does the trick!

Cheers

Adam

References:
- Macro expansion and the preprocessor
  - From: Adam Mercer
- Re: Macro expansion and the preprocessor
  - From: Jonathan Wakely

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