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Re: Predeclarations of classes
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: Simon Lange <s dot lange at partec dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Fri, 13 Apr 2012 16:45:53 +0100
- Subject: Re: Predeclarations of classes
- References: <op.wcpgdoycq74zhu@web>
On 13 April 2012 14:14, Simon Lange wrote:
> hallo list,
>
> converting a project from VisualC++ to GCC (4.6.1) the following problem
> occurs:
>
> class A; //*
>
> class B
> {
>
> public:
>
> ? ? ? ?A* a;
> };
>
>
> brings at line " //* " the error-message:
>
> ? ? ? ?"predeclaration of struct A"
>
>
> it's a simple predeclaration ? any idea ??
You must be using some other compiler, G++ doesn't issue any
diagnostic like that (and I've never heard the term predeclaration
before, it's usually called a forward declaration or more correctly
just declaration, as opposed to definition.)