Another template question

[Edward Diener]

In the documentation I read:

"If multiple templates with the same TemplateIdentifier are declared, 
they are distinct if they have a
different number of arguments or are differently specialized."

What happens if they are not distinct ? Is it a compiler error ?

template MyTemplate(T,U) { T a; U b;}
template MyTemplate(A,B) { A * a; B * b;}

Is this an error ?