// Test method calls with self as an argument cannot subvert type checking. struct Foo; impl Foo { fn bar(&self) {} } fn main() { let x = Foo; Foo::bar(x); //~ ERROR mismatched types //~| expected `&Foo`, found struct `Foo` Foo::bar(&42); //~ ERROR mismatched types //~| expected struct `Foo`, found integer //~| expected reference `&Foo` //~| found reference `&{integer}` }