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[rust.git] / src / test / ui / existential_types / unused_generic_param.rs
1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 #![feature(existential_type)]
12
13 fn main() {
14 }
15
16 existential type PartiallyDefined<T>: 'static; //~ `T` is unused
17
18 fn partially_defined<T: std::fmt::Debug>(_: T) -> PartiallyDefined<T> {
19     4u32
20 }
21
22 existential type PartiallyDefined2<T>: 'static; //~ `T` is unused
23
24 fn partially_defined2<T: std::fmt::Debug>(_: T) -> PartiallyDefined2<T> {
25     4u32
26 }
27
28 fn partially_defined22<T>(_: T) -> PartiallyDefined2<T> {
29     4u32
30 }