33 lines
903 B
Rust
33 lines
903 B
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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// Check that we correctly prevent users from making trait objects
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// form traits that make use of `Self` in an argument or return position.
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trait Bar<T> {
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fn bar(&self, x: &T);
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}
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trait Baz : Bar<Self> {
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}
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fn make_bar<T:Bar<u32>>(t: &T) -> &Bar<u32> {
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t
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}
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fn make_baz<T:Baz>(t: &T) -> &Baz {
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//~^ ERROR E0038
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//~| NOTE the trait cannot use `Self` as a type parameter in the supertrait listing
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t
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}
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fn main() {
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}
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