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// There are two different instances to check that even if
// the trait is implemented for the output of a function,
// it will still be displayed if the function itself implements a trait.
trait Foo {}
impl Foo for fn() -> bool {}
impl Foo for bool {}
fn example() -> bool {
true
}
trait NoOtherFoo {}
impl NoOtherFoo for fn() -> bool {}
fn do_on_foo(v: impl Foo) {}
fn do_on_single_foo(v: impl NoOtherFoo) {}
fn main() {
do_on_foo(example);
//~^ ERROR the trait bound
do_on_single_foo(example);
//~^ ERROR the trait bound
}
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