47 lines
1.2 KiB
Rust
47 lines
1.2 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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// Attempt to change the type as well as unsizing.
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#![feature(unsized_tuple_coercion)]
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struct Fat<T: ?Sized> {
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ptr: T
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}
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struct Foo;
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trait Bar { fn bar(&self) {} }
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pub fn main() {
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// With a vec of isize.
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let f1 = Fat { ptr: [1, 2, 3] };
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let f2: &Fat<[isize; 3]> = &f1;
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let f3: &Fat<[usize]> = f2;
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//~^ ERROR mismatched types
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// With a trait.
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let f1 = Fat { ptr: Foo };
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let f2: &Fat<Foo> = &f1;
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let f3: &Fat<Bar> = f2;
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//~^ ERROR `Foo: Bar` is not satisfied
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// Tuple with a vec of isize.
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let f1 = ([1, 2, 3],);
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let f2: &([isize; 3],) = &f1;
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let f3: &([usize],) = f2;
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//~^ ERROR mismatched types
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// Tuple with a trait.
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let f1 = (Foo,);
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let f2: &(Foo,) = &f1;
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let f3: &(Bar,) = f2;
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//~^ ERROR `Foo: Bar` is not satisfied
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}
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