61 lines
2.1 KiB
Rust
61 lines
2.1 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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// revisions: ast mir
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//[mir]compile-flags: -Z emit-end-regions -Z borrowck-mir
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struct S<X, Y> {
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x: X,
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y: Y,
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}
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fn main() {
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let x: &&Box<i32>;
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let _y = &**x; //[ast]~ ERROR use of possibly uninitialized variable: `**x` [E0381]
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//[mir]~^ (Ast) [E0381]
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//[mir]~| (Mir) [E0381]
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let x: &&S<i32, i32>;
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let _y = &**x; //[ast]~ ERROR use of possibly uninitialized variable: `**x` [E0381]
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//[mir]~^ (Ast) [E0381]
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//[mir]~| (Mir) [E0381]
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let x: &&i32;
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let _y = &**x; //[ast]~ ERROR use of possibly uninitialized variable: `**x` [E0381]
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//[mir]~^ (Ast) [E0381]
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//[mir]~| (Mir) [E0381]
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let mut a: S<i32, i32>;
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a.x = 0;
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let _b = &a.x; //[ast]~ ERROR use of possibly uninitialized variable: `a.x` [E0381]
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//[mir]~^ ERROR (Ast) [E0381]
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// (deliberately *not* an error under MIR-borrowck)
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let mut a: S<&&i32, &&i32>;
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a.x = &&0;
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let _b = &**a.x; //[ast]~ ERROR use of possibly uninitialized variable: `**a.x` [E0381]
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//[mir]~^ ERROR (Ast) [E0381]
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// (deliberately *not* an error under MIR-borrowck)
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let mut a: S<i32, i32>;
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a.x = 0;
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let _b = &a.y; //[ast]~ ERROR use of possibly uninitialized variable: `a.y` [E0381]
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//[mir]~^ ERROR (Ast) [E0381]
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//[mir]~| ERROR (Mir) [E0381]
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let mut a: S<&&i32, &&i32>;
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a.x = &&0;
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let _b = &**a.y; //[ast]~ ERROR use of possibly uninitialized variable: `**a.y` [E0381]
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//[mir]~^ ERROR (Ast) [E0381]
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//[mir]~| ERROR (Mir) [E0381]
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}
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