32 lines
1.1 KiB
Rust
32 lines
1.1 KiB
Rust
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// Copyright 2018 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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#[derive(Copy, Clone)]
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enum Void {}
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// Tests that we detect unsafe places (specifically, union fields and
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// raw pointer dereferences), even when they're matched on while having
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// an uninhabited type (equivalent to `std::intrinsics::unreachable()`).
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fn union_field() {
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union Union { unit: (), void: Void }
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let u = Union { unit: () };
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match u.void {}
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//~^ ERROR access to union field requires unsafe function or block
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}
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fn raw_ptr_deref() {
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let ptr = std::ptr::null::<Void>();
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match *ptr {}
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//~^ ERROR dereference of raw pointer requires unsafe function or block
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}
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fn main() {}
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