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https://github.com/rust-lang/rust
synced 2024-10-01 22:34:35 +00:00
64cce5fc7d
Updates `interpret`, `codegen_ssa`, and `codegen_cranelift` to consume the new cast instead of the intrinsic. Includes `CastTransmute` for custom MIR building, to be able to test the extra UB.
53 lines
2 KiB
Plaintext
53 lines
2 KiB
Plaintext
warning: the type `!` does not permit zero-initialization
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--> $DIR/validate_uninhabited_zsts.rs:4:14
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LL | unsafe { std::mem::transmute(()) }
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| ^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
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= note: the `!` type has no valid value
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= note: `#[warn(invalid_value)]` on by default
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error[E0080]: evaluation of constant value failed
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--> $DIR/validate_uninhabited_zsts.rs:4:14
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LL | unsafe { std::mem::transmute(()) }
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| ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of the never type `!`
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note: inside `foo`
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--> $DIR/validate_uninhabited_zsts.rs:4:14
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LL | unsafe { std::mem::transmute(()) }
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| ^^^^^^^^^^^^^^^^^^^^^^^
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note: inside `FOO`
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--> $DIR/validate_uninhabited_zsts.rs:19:33
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LL | const FOO: [empty::Empty; 3] = [foo(); 3];
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| ^^^^^
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error[E0080]: evaluation of constant value failed
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--> $DIR/validate_uninhabited_zsts.rs:21:42
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LL | const BAR: [empty::Empty; 3] = [unsafe { std::mem::transmute(()) }; 3];
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| ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered a value of uninhabited type empty::Void
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warning: the type `empty::Empty` does not permit zero-initialization
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--> $DIR/validate_uninhabited_zsts.rs:21:42
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LL | const BAR: [empty::Empty; 3] = [unsafe { std::mem::transmute(()) }; 3];
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| ^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
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note: in this struct field
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--> $DIR/validate_uninhabited_zsts.rs:16:22
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LL | pub struct Empty(Void);
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| ^^^^
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note: enums with no inhabited variants have no valid value
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--> $DIR/validate_uninhabited_zsts.rs:13:5
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LL | enum Void {}
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| ^^^^^^^^^
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error: aborting due to 2 previous errors; 2 warnings emitted
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For more information about this error, try `rustc --explain E0080`.
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