// core::ptr

/// Compares the *addresses* of the two function pointers for equality.
///
/// Function pointers comparisons can have surprising results since
/// they are never guaranteed to be unique and could vary between different
/// code generation units. Furthermore, different functions could have the
/// same address after being merged together.
///
/// This is the same as `f == g` but using this function makes clear
/// that you are aware of these potentially surprising semantics.
pub fn fn_addr_eq<T: FnPtr, U: FnPtr>(f: T, g: U) -> bool {
    f.addr() == g.addr()
}