48 lines
1.6 KiB
Rust
48 lines
1.6 KiB
Rust
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// Copyright 2017 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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// compile-flags: -Z parse-only -Z continue-parse-after-error
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fn f() -> impl A + B {} // OK
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fn f() -> dyn A + B {} // OK
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fn f() -> A + B {} // OK
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impl S {
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fn f(self) -> impl A + B { // OK
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let _ = |a, b| -> impl A + B {}; // OK
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}
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fn f(self) -> dyn A + B { // OK
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let _ = |a, b| -> dyn A + B {}; // OK
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}
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fn f(self) -> A + B { // OK
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let _ = |a, b| -> A + B {}; // OK
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}
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}
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type A = fn() -> impl A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `fn() -> impl A`
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type A = fn() -> dyn A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `fn() -> dyn A`
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type A = fn() -> A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `fn() -> A`
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type A = Fn() -> impl A + B; // OK, interpreted as `(Fn() -> impl A) + B`
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type A = Fn() -> dyn A + B; // OK, interpreted as `(Fn() -> dyn A) + B`
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type A = Fn() -> A + B; // OK, interpreted as `(Fn() -> A) + B`
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type A = &impl A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `&impl A`
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type A = &dyn A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `&dyn A`
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type A = &A + B;
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//~^ ERROR expected a path on the left-hand side of `+`, not `&A`
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fn main() {}
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