72 lines
1.5 KiB
Rust
72 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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// Test sized-ness checking in substitution within fn bodies..
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use std::marker;
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// Unbounded.
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fn f1<X: ?Sized>(x: &X) {
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f2::<X>(x);
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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}
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fn f2<X>(x: &X) {
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}
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// Bounded.
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trait T {
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fn foo(&self) { }
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}
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fn f3<X: ?Sized + T>(x: &X) {
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f4::<X>(x);
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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}
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fn f4<X: T>(x: &X) {
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}
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// Test with unsized enum.
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enum E<X: ?Sized> {
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V(X),
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}
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fn f5<Y>(x: &Y) {}
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fn f6<X: ?Sized>(x: &X) {}
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fn f7<X: ?Sized>(x1: &E<X>, x2: &E<X>) {
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f5(x1);
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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f6(x2); // ok
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}
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// Test with unsized struct.
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struct S<X: ?Sized> {
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x: X,
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}
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fn f8<X: ?Sized>(x1: &S<X>, x2: &S<X>) {
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f5(x1);
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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f6(x2); // ok
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}
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// Test some tuples.
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fn f9<X: ?Sized>(x1: Box<S<X>>, x2: Box<E<X>>) {
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f5(&(*x1, 34));
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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}
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fn f10<X: ?Sized>(x1: Box<S<X>>, x2: Box<E<X>>) {
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f5(&(32, *x2));
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//~^ ERROR `X: std::marker::Sized` is not satisfied
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}
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pub fn main() {
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}
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