Typedeffing a function (NOT a function pointer)

Question

typedef void int_void(int);

int_void is a function taking an integer and returning nothing.

My question is: can it be

Answer 1

I think it's legal - the following demonstrates its use:

typedef void f(int);

void t( int a ) {
}

int main() {
    f * p = t;
    p(1); // call t(1)
}

and actually, this C++ code compiles (with g++) & runs - I'm really not sure how kosher it is though.

#include 

typedef void f(int);

void t( int a ) {
    printf( "val is %d\n", a );
}

int main() {
    f & p = t;   // note reference not pointer
    p(1);
}