[rustc.git] / src / test / ui / fn / fn-trait-formatting.rs

#![feature(box_syntax)]

fn needs_fn<F>(x: F) where F: Fn(isize) -> isize {}

fn main() {
    let _: () = (box |_: isize| {}) as Box<dyn FnOnce(isize)>;
    //~^ ERROR mismatched types
    //~| expected type `()`
    //~| found type `std::boxed::Box<dyn std::ops::FnOnce(isize)>`
    let _: () = (box |_: isize, isize| {}) as Box<dyn Fn(isize, isize)>;
    //~^ ERROR mismatched types
    //~| expected type `()`
    //~| found type `std::boxed::Box<dyn std::ops::Fn(isize, isize)>`
    let _: () = (box || -> isize { unimplemented!() }) as Box<dyn FnMut() -> isize>;
    //~^ ERROR mismatched types
    //~| expected type `()`
    //~| found type `std::boxed::Box<dyn std::ops::FnMut() -> isize>`

    needs_fn(1);
    //~^ ERROR expected a `std::ops::Fn<(isize,)>` closure, found `{integer}`
}
Commit	Line	Data
1a4d82fc JJ	1	#![feature(box_syntax)]
	2
	3	fn needs_fn<F>(x: F) where F: Fn(isize) -> isize {}
	4
	5	fn main() {
dc9dc135	6	let _: () = (box \|_: isize\| {}) as Box<dyn FnOnce(isize)>;
c34b1796	7	//~^ ERROR mismatched types
a7813a04	8	//~\| expected type `()`
8faf50e0	9	//~\| found type `std::boxed::Box<dyn std::ops::FnOnce(isize)>`
dc9dc135	10	let _: () = (box \|_: isize, isize\| {}) as Box<dyn Fn(isize, isize)>;
85aaf69f	11	//~^ ERROR mismatched types
a7813a04	12	//~\| expected type `()`
8faf50e0	13	//~\| found type `std::boxed::Box<dyn std::ops::Fn(isize, isize)>`
dc9dc135	14	let _: () = (box \|\| -> isize { unimplemented!() }) as Box<dyn FnMut() -> isize>;
85aaf69f	15	//~^ ERROR mismatched types
a7813a04	16	//~\| expected type `()`
8faf50e0	17	//~\| found type `std::boxed::Box<dyn std::ops::FnMut() -> isize>`
1a4d82fc	18
85aaf69f	19	needs_fn(1);
b7449926	20	//~^ ERROR expected a `std::ops::Fn<(isize,)>` closure, found `{integer}`
1a4d82fc	21	}