rust/src/test/compile-fail/generic-impl-less-params-with-defaults.rs

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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[feature(default_type_params)];
struct Foo<A, B, C = (A, B)>;
impl<A, B, C = (A, B)> Foo<A, B, C> {
fn new() -> Foo<A, B, C> {Foo}
}
fn main() {
Foo::<int>::new(); //~ ERROR the impl referenced by this path needs at least 2 type parameters, but 1 type parameter were supplied
//~^ ERROR not enough type parameters provided: expected at least 2, found 1
}