mirror of https://github.com/rust-lang/rust
22 lines
562 B
Rust
22 lines
562 B
Rust
#[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 is unsafe
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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 is unsafe
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}
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fn main() {}
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