hi,
I need to use a template class object within another template class.
Specifically gcc (3.2.3 on linux) gives me a problem when the INNER
TEMPLATE OBJECT IS CREATED USING THE TEMPLATE PARAMETER OF THE ENCLOSING
CLASS and when i call the inner class object function from the enclosing
class object function..
AS this works fine in MS VC7 so i wanted to know if this is some bug in
gcc
Example :
In the below example the "enclosing" class contains an object of
"contained" class. The contained object is created using the
template parameter of "enclosing" class. When the "enclosing" class
function is called, we call the function of the inner object.
template <std::size_t size>
class contained {
public:
template <std::size_t sub_size>
int func_inner(){ ... }
};
template < std::size_t size>
class enclosing {
public:
template <std::size_t sub_size>
int func_enclose(){ ...
return
(static_cast<contained_size>( inner_object) ) .fun_inner();
//
=================THIS GIVES AN ERROR ========================
MARK1
}
contained<size> inner_object; // ============== THIS IS THE
ORIGIN OF ERROR ? ===================== MARK2
};
Note : The error disappears if i use a specific value when creating the
inner_object ( MARK 2 above)
That is instead of "contained<size> inner_object" if i use "contained <N>
inner_object" where N is any number like 32.
(Even in that case i need to use a static_cast ( see MARK 1) to remind the
compiler of the data type of inner_object otherwise
the compiler gives an error which i find strange.)
I cant use a specific value for the inner object as it should take it from
the enclosing class template parameter. Since this is
not working i would greatly appreciate if someone can tell me whether this
is a gcc bug or if i need to do something special to let the compiler
know what i am trying to do.
Thanks &
---------------------------------------------------------------------------------------------------------
Warm Regards,
Suresh.T
