a0cfda53c4
closes #13367 [breaking-change] Use `Sized?` to indicate a dynamically sized type parameter or trait (used to be `type`). E.g., ``` trait Tr for Sized? {} fn foo<Sized? X: Share>(x: X) {} ```
44 lines
1.9 KiB
Rust
44 lines
1.9 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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// Test `Sized?` local variables.
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trait T for Sized? {}
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fn f1<Sized? X>(x: &X) {
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let _: X; //~ERROR variable `_` has dynamically sized type `X`
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let _: (int, (X, int)); //~ERROR variable `_` has dynamically sized type `(int,(X,int))`
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let y: X; //~ERROR variable `y` has dynamically sized type `X`
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let y: (int, (X, int)); //~ERROR variable `y` has dynamically sized type `(int,(X,int))`
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}
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fn f2<Sized? X: T>(x: &X) {
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let _: X; //~ERROR variable `_` has dynamically sized type `X`
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let _: (int, (X, int)); //~ERROR variable `_` has dynamically sized type `(int,(X,int))`
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let y: X; //~ERROR variable `y` has dynamically sized type `X`
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let y: (int, (X, int)); //~ERROR variable `y` has dynamically sized type `(int,(X,int))`
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}
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fn f3<Sized? X>(x1: Box<X>, x2: Box<X>, x3: Box<X>) {
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let y: X = *x1; //~ERROR variable `y` has dynamically sized type `X`
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let y = *x2; //~ERROR variable `y` has dynamically sized type `X`
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let (y, z) = (*x3, 4i); //~ERROR variable `y` has dynamically sized type `X`
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}
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fn f4<Sized? X: T>(x1: Box<X>, x2: Box<X>, x3: Box<X>) {
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let y: X = *x1; //~ERROR variable `y` has dynamically sized type `X`
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let y = *x2; //~ERROR variable `y` has dynamically sized type `X`
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let (y, z) = (*x3, 4i); //~ERROR variable `y` has dynamically sized type `X`
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}
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fn g1<Sized? X>(x: X) {} //~ERROR variable `x` has dynamically sized type `X`
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fn g2<Sized? X: T>(x: X) {} //~ERROR variable `x` has dynamically sized type `X`
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pub fn main() {
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}
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