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From: Jonathan Wakely (cow_at_[hidden])
Date: 2005-03-23 11:53:35

On Wed, Mar 23, 2005 at 04:06:09PM +0000, Joaquin M Lopez Munoz wrote:

> "I can't think of any way that this extension could
> break a conforming program, considering that users
> are not permitted to forward-declare standard
> library components"
> Is this really so? Why cannot I forward declare a
> stdlib component?

Opening namespace std for anything except specialisations of standard
library templates (with user-defined types as parameters) is illegal.


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