872ce47955
here. Some of this may have been poorly rebased, though I tried to be careful and preserve the spirit of the test.
43 lines
1.5 KiB
Rust
43 lines
1.5 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-tidy-linelength
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#![feature(on_unimplemented)]
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use std::marker;
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#[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}`"]
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trait Foo<Bar, Baz, Quux>
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: marker::PhantomFn<(Self,Bar,Baz,Quux)>
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{}
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fn foobar<U: Clone, T: Foo<u8, U, u32>>() -> T {
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}
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#[rustc_on_unimplemented="a collection of type `{Self}` cannot be built from an iterator over elements of type `{A}`"]
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trait MyFromIterator<A> {
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/// Build a container with elements from an external iterator.
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fn my_from_iter<T: Iterator<Item=A>>(iterator: T) -> Self;
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}
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fn collect<A, I: Iterator<Item=A>, B: MyFromIterator<A>>(it: I) -> B {
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MyFromIterator::my_from_iter(it)
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}
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pub fn main() {
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let x = vec!(1u8, 2, 3, 4);
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let y: Option<Vec<u8>> = collect(x.iter()); // this should give approximately the same error for x.iter().collect()
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//~^ ERROR
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//~^^ NOTE a collection of type `core::option::Option<collections::vec::Vec<u8>>` cannot be built from an iterator over elements of type `&u8`
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let x: String = foobar(); //~ ERROR
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//~^ NOTE test error `collections::string::String` with `u8` `_` `u32`
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}
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