[ Example:
template <class T> class X { };
template <class T> void f(T t) { }
struct { } unnamed_obj;
void f() {
struct A { };
enum { e1 };
typedef struct { } B;
B b;
X<A> x1; X<A*> x2; X<B> x3; f(e1); f(unnamed_obj); f(b); }
— end example ] [ Note: A template type argument may be an incomplete type ([basic.types]). — end note ]
If a declaration acquires a function type through a type dependent on a template-parameter and this causes a declaration that does not use the syntactic form of a function declarator to have function type, the program is ill-formed. [ Example:
template<class T> struct A {
static T t;
};
typedef int function();
A<function> a;
— end example ]
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