7b9519a5d4
Instead of suppressing only trait errors that are "exact duplicates", display only the "most high-level" error when there are multiple trait errors with the same span that imply each-other. e.g. when there are both `[closure]: Fn` and `[closure]: FnOnce`, omit displaying the `[closure]: FnOnce` bound.
41 lines
1.8 KiB
Rust
41 lines
1.8 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 {}
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fn f1<W: ?Sized, X: ?Sized, Y: ?Sized, Z: ?Sized>(x: &X) {
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let _: W; // <-- this is OK, no bindings created, no initializer.
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let _: (isize, (X, isize)); //~ERROR `X: std::marker::Sized` is not satisfie
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let y: Y; //~ERROR `Y: std::marker::Sized` is not satisfied
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let y: (isize, (Z, usize)); //~ERROR `Z: std::marker::Sized` is not satisfied
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}
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fn f2<X: ?Sized, Y: ?Sized>(x: &X) {
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let y: X; //~ERROR `X: std::marker::Sized` is not satisfied
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let y: (isize, (Y, isize)); //~ERROR `Y: std::marker::Sized` is not satisfied
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}
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fn f3<X: ?Sized>(x1: Box<X>, x2: Box<X>, x3: Box<X>) {
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let y: X = *x1; //~ERROR `X: std::marker::Sized` is not satisfied
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let y = *x2; //~ERROR `X: std::marker::Sized` is not satisfied
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let (y, z) = (*x3, 4); //~ERROR `X: std::marker::Sized` is not satisfied
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}
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fn f4<X: ?Sized + T>(x1: Box<X>, x2: Box<X>, x3: Box<X>) {
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let y: X = *x1; //~ERROR `X: std::marker::Sized` is not satisfied
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let y = *x2; //~ERROR `X: std::marker::Sized` is not satisfied
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let (y, z) = (*x3, 4); //~ERROR `X: std::marker::Sized` is not satisfied
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}
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fn g1<X: ?Sized>(x: X) {} //~ERROR `X: std::marker::Sized` is not satisfied
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fn g2<X: ?Sized + T>(x: X) {} //~ERROR `X: std::marker::Sized` is not satisfied
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pub fn main() {
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}
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