rust/src/test/ui/issues/issue-868.rs
2019-07-27 18:56:16 +03:00

19 lines
426 B
Rust

// run-pass
#![allow(unused_parens)]
// pretty-expanded FIXME #23616
fn f<T, F>(g: F) -> T where F: FnOnce() -> T { g() }
pub fn main() {
let _x = f( | | { 10 });
// used to be: cannot determine a type for this expression
f(| | { });
// ditto
f( | | { ()});
// always worked
let _: () = f(| | { });
// empty block with no type info should compile too
let _ = f(||{});
let _ = (||{});
}