It is compile-time error to invoke not existing function

[scheglov]

language/issue11724_test
language/call_nonexistent_static_test/08

main() {
  f()
}

  f() is unqualified invocation 12.14.3.
  "An unqualified function invocation i has the form
id(a1; : : : ; an; xn+1 : an+1; : : : ; xn+k : an+k),
where id is an identier."

  And because "f" is not defined, we use "Otherwise, i is equivalent to this:id(a1; : : : ; an; xn+1 : an+1; : : : ; xn+k : an+k)."

  But in 12.10 it is specified that "It is a compile-time error if this appears in a top-level function or variable
initializer, in a factory constructor, or in a static method or variable initializer,
or in the initializer of an instance variable."

[natebosch]

Can this be closed? Do the tests need to be updated or removed?