Is 16.4 violated if 16.3 is?

[gs]

Given the following code:

Code:

void f(int);
void f(int x){}

Does this code violate rule #16.4, identifiers used in the declaration and definition of a function shall be identical? While the lack of a parameter name in the prototype violates #16.3, I am not sure if violating #16.4 is possible in that case.