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trait Foo {
fn foo(_: fn(u8) -> ());
fn bar(_: Option<u8>);
fn baz(_: (u8, u16));
fn qux() -> u8;
}
struct Bar;
impl Foo for Bar {
fn foo(_: fn(u16) -> ()) {}
//~^ ERROR method `foo` has an incompatible type for trait
fn bar(_: Option<u16>) {}
//~^ ERROR method `bar` has an incompatible type for trait
fn baz(_: (u16, u16)) {}
//~^ ERROR method `baz` has an incompatible type for trait
fn qux() -> u16 { 5u16 }
//~^ ERROR method `qux` has an incompatible type for trait
}
fn main() {}
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