Bug involving derived template classes in G++ 3.4.3

Bug involving derived template classes in G++ 3.4.3

[John M Collins]

Please "CC" me as I'm not subscribed.

I have the following program segment (cutting down to bare minimum). This has 
worked previously with G++ 3.3.* and earlier.

Classes cut down to bare minimum obviously - the "real" ones made use of "X".

class  A  {
public:
	int	field1;
};

template<typename X> class  B : public A  {
public:
	int	field2;
};

template<typename X> class C : public B<X>  {
public:
	C(int k)  { field1 = k;  }	
	//  G++ 3.4.3 complains that "field1" is not defined
	void setk(int k) { field1 = k; }
	//  Likewise it complains.
};

main()
{
	C<int> p(17);

	return  0;
}

The problem goes away if I put "this->field1" in there instead of bare 
"field1" thus

C(int k)  { this->field1 = k;  }	
void setk(int k) { this->field1 = k; }

-- 
John Collins Xi Software Ltd www.xisl.com

Re: Bug involving derived template classes in G++ 3.4.3

[Andrew Pinski]

On Dec 28, 2004, at 3:26 PM, John M Collins wrote:

> Please "CC" me as I'm not subscribed.
>
> I have the following program segment (cutting down to bare minimum). 
> This has
> worked previously with G++ 3.3.* and earlier.
>

Read the 3.4.0 release notes.

Thanks,
Andrew Pinski

Re: Bug involving derived template classes in G++ 3.4.3

[John M Collins]

On Tuesday 28 Dec 2004 20:27, Andrew Pinski wrote:
> On Dec 28, 2004, at 3:26 PM, John M Collins wrote:
> > Please "CC" me as I'm not subscribed.
> >
> > I have the following program segment (cutting down to bare minimum).
> > This has
> > worked previously with G++ 3.3.* and earlier.
>
> Read the 3.4.0 release notes.
>
> Thanks,
> Andrew Pinski

Thank you - I apologise for missing that.

I wonder if I might suggest that the message be expanded in this case - it did 
break a good few lines of code - and the way it's broken is not obvious, for 
example virtual functions in "A" can still be overriden in template class "C" 
with the expected result.

-- 
John Collins Xi Software Ltd www.xisl.com