I have the following classes :

class X { public : typedef int I ; } ;

class Y : public X { } ;


void foo()
{
    Y::I i ; // ***
}

Is the line marked *** legal ??
My first impression is that it should be an error, and required to be X::I.
Two versions of g++ (2.6.x and 2.7.x) seem happy with it, but I'm not so
sure.

If it is legal, I'd be grateful if someone could tell me where it states so
(in the ARM, DWP etc) .


Regards,
Steven Perryman
perryman@cpd.ntc.nokia.com



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Steven Perryman wrote:
>
> I have the following classes :
>
> class X { public : typedef int I ; } ;
>
> class Y : public X { } ;
>
> void foo()
> {
>     Y::I i ; // ***
> }
>
> Is the line marked *** legal ??

Yes, it is legal.

> My first impression is that it should be an error, and required to be X::I.

Why?

> Two versions of g++ (2.6.x and 2.7.x) seem happy with it, but I'm not so
> sure.
>
> If it is legal, I'd be grateful if someone could tell me where it states so
> (in the ARM, DWP etc) .

I is a name defined in X. All such names are inherited by Y. It's no
different from a data member or a member function.


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