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#![feature(fn_traits, unboxed_closures, tuple_trait)]
use std::default::Default;
use std::marker::Tuple;
fn wrap<P: Tuple + Default, T>(func: impl Fn<P, Output = T>) {
let x: P = Default::default();
// Should be: `func.call(x);`
func(x);
//~^ ERROR cannot use call notation; the first type parameter for the function trait is neither a tuple nor unit
}
fn foo() {}
fn main() {
wrap(foo);
}
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