error: the type `&T` does not permit zero-initialization --> $DIR/invalid_value.rs:53:32 | LL | let _val: &'static T = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null note: the lint level is defined here --> $DIR/invalid_value.rs:4:9 | LL | #![deny(invalid_value)] | ^^^^^^^^^^^^^ error: the type `&T` does not permit being left uninitialized --> $DIR/invalid_value.rs:54:32 | LL | let _val: &'static T = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null error: the type `Wrap<&T>` does not permit zero-initialization --> $DIR/invalid_value.rs:56:38 | LL | let _val: Wrap<&'static T> = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Wrap<&T>` must be non-null note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `Wrap<&T>` does not permit being left uninitialized --> $DIR/invalid_value.rs:57:38 | LL | let _val: Wrap<&'static T> = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Wrap<&T>` must be non-null note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `!` does not permit zero-initialization --> $DIR/invalid_value.rs:64:23 | LL | let _val: ! = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: the `!` type has no valid value error: the type `!` does not permit being left uninitialized --> $DIR/invalid_value.rs:65:23 | LL | let _val: ! = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: the `!` type has no valid value error: the type `(i32, !)` does not permit zero-initialization --> $DIR/invalid_value.rs:67:30 | LL | let _val: (i32, !) = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: the `!` type has no valid value error: the type `(i32, !)` does not permit being left uninitialized --> $DIR/invalid_value.rs:68:30 | LL | let _val: (i32, !) = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: integers must be initialized error: the type `Void` does not permit zero-initialization --> $DIR/invalid_value.rs:70:26 | LL | let _val: Void = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | note: enums with no inhabited variants have no valid value --> $DIR/invalid_value.rs:11:1 | LL | enum Void {} | ^^^^^^^^^ error: the type `Void` does not permit being left uninitialized --> $DIR/invalid_value.rs:71:26 | LL | let _val: Void = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | note: enums with no inhabited variants have no valid value --> $DIR/invalid_value.rs:11:1 | LL | enum Void {} | ^^^^^^^^^ error: the type `&i32` does not permit zero-initialization --> $DIR/invalid_value.rs:73:34 | LL | let _val: &'static i32 = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null error: the type `&i32` does not permit being left uninitialized --> $DIR/invalid_value.rs:74:34 | LL | let _val: &'static i32 = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null error: the type `Ref` does not permit zero-initialization --> $DIR/invalid_value.rs:76:25 | LL | let _val: Ref = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Ref` must be non-null note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:13:12 | LL | struct Ref(&'static i32); | ^^^^^^^^^^^^ error: the type `Ref` does not permit being left uninitialized --> $DIR/invalid_value.rs:77:25 | LL | let _val: Ref = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Ref` must be non-null note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:13:12 | LL | struct Ref(&'static i32); | ^^^^^^^^^^^^ error: the type `fn()` does not permit zero-initialization --> $DIR/invalid_value.rs:79:26 | LL | let _val: fn() = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: function pointers must be non-null error: the type `fn()` does not permit being left uninitialized --> $DIR/invalid_value.rs:80:26 | LL | let _val: fn() = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: function pointers must be non-null error: the type `Wrap` does not permit zero-initialization --> $DIR/invalid_value.rs:82:32 | LL | let _val: Wrap = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Wrap` must be non-null note: because function pointers must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `Wrap` does not permit being left uninitialized --> $DIR/invalid_value.rs:83:32 | LL | let _val: Wrap = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Wrap` must be non-null note: because function pointers must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `WrapEnum` does not permit zero-initialization --> $DIR/invalid_value.rs:85:36 | LL | let _val: WrapEnum = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `WrapEnum` must be non-null note: because function pointers must be non-null (in this field of the only potentially inhabited enum variant) --> $DIR/invalid_value.rs:17:28 | LL | enum WrapEnum { Wrapped(T) } | ^ error: the type `WrapEnum` does not permit being left uninitialized --> $DIR/invalid_value.rs:86:36 | LL | let _val: WrapEnum = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `WrapEnum` must be non-null note: because function pointers must be non-null (in this field of the only potentially inhabited enum variant) --> $DIR/invalid_value.rs:17:28 | LL | enum WrapEnum { Wrapped(T) } | ^ error: the type `Wrap<(RefPair, i32)>` does not permit zero-initialization --> $DIR/invalid_value.rs:88:42 | LL | let _val: Wrap<(RefPair, i32)> = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | note: `RefPair` must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:14:16 | LL | struct RefPair((&'static i32, i32)); | ^^^^^^^^^^^^^^^^^^^ error: the type `Wrap<(RefPair, i32)>` does not permit being left uninitialized --> $DIR/invalid_value.rs:89:42 | LL | let _val: Wrap<(RefPair, i32)> = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | note: `RefPair` must be non-null (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ note: because references must be non-null (in this struct field) --> $DIR/invalid_value.rs:14:16 | LL | struct RefPair((&'static i32, i32)); | ^^^^^^^^^^^^^^^^^^^ error: the type `NonNull` does not permit zero-initialization --> $DIR/invalid_value.rs:91:34 | LL | let _val: NonNull = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `std::ptr::NonNull` must be non-null error: the type `NonNull` does not permit being left uninitialized --> $DIR/invalid_value.rs:92:34 | LL | let _val: NonNull = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `std::ptr::NonNull` must be non-null = note: raw pointers must be initialized error: the type `(NonZero, i32)` does not permit zero-initialization --> $DIR/invalid_value.rs:94:41 | LL | let _val: (NonZero, i32) = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: `std::num::NonZero` must be non-null = note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null error: the type `(NonZero, i32)` does not permit being left uninitialized --> $DIR/invalid_value.rs:95:41 | LL | let _val: (NonZero, i32) = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: `std::num::NonZero` must be non-null = note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null = note: integers must be initialized error: the type `*const dyn Send` does not permit zero-initialization --> $DIR/invalid_value.rs:97:37 | LL | let _val: *const dyn Send = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: the vtable of a wide raw pointer must be non-null error: the type `*const dyn Send` does not permit being left uninitialized --> $DIR/invalid_value.rs:98:37 | LL | let _val: *const dyn Send = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: the vtable of a wide raw pointer must be non-null error: the type `[fn(); 2]` does not permit zero-initialization --> $DIR/invalid_value.rs:100:31 | LL | let _val: [fn(); 2] = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: function pointers must be non-null error: the type `[fn(); 2]` does not permit being left uninitialized --> $DIR/invalid_value.rs:101:31 | LL | let _val: [fn(); 2] = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: function pointers must be non-null error: the type `TwoUninhabited` does not permit zero-initialization --> $DIR/invalid_value.rs:103:36 | LL | let _val: TwoUninhabited = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | note: enums with no inhabited variants have no valid value --> $DIR/invalid_value.rs:41:1 | LL | enum TwoUninhabited { | ^^^^^^^^^^^^^^^^^^^ error: the type `TwoUninhabited` does not permit being left uninitialized --> $DIR/invalid_value.rs:104:36 | LL | let _val: TwoUninhabited = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | note: enums with no inhabited variants have no valid value --> $DIR/invalid_value.rs:41:1 | LL | enum TwoUninhabited { | ^^^^^^^^^^^^^^^^^^^ error: the type `OneFruitNonZero` does not permit zero-initialization --> $DIR/invalid_value.rs:106:37 | LL | let _val: OneFruitNonZero = mem::zeroed(); | ^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: `OneFruitNonZero` must be non-null note: because `std::num::NonZero` must be non-null (in this field of the only potentially inhabited enum variant) --> $DIR/invalid_value.rs:38:12 | LL | Banana(NonZero), | ^^^^^^^^^^^^ = note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null error: the type `OneFruitNonZero` does not permit being left uninitialized --> $DIR/invalid_value.rs:107:37 | LL | let _val: OneFruitNonZero = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: `OneFruitNonZero` must be non-null note: because `std::num::NonZero` must be non-null (in this field of the only potentially inhabited enum variant) --> $DIR/invalid_value.rs:38:12 | LL | Banana(NonZero), | ^^^^^^^^^^^^ = note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null = note: integers must be initialized error: the type `bool` does not permit being left uninitialized --> $DIR/invalid_value.rs:111:26 | LL | let _val: bool = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: booleans must be either `true` or `false` error: the type `Wrap` does not permit being left uninitialized --> $DIR/invalid_value.rs:114:32 | LL | let _val: Wrap = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `Wrap` must be initialized inside its custom valid range note: characters must be a valid Unicode codepoint (in this struct field) --> $DIR/invalid_value.rs:16:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `NonBig` does not permit being left uninitialized --> $DIR/invalid_value.rs:117:28 | LL | let _val: NonBig = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `NonBig` must be initialized inside its custom valid range note: integers must be initialized (in this struct field) --> $DIR/invalid_value.rs:22:26 | LL | pub(crate) struct NonBig(u64); | ^^^ error: the type `Fruit` does not permit being left uninitialized --> $DIR/invalid_value.rs:120:27 | LL | let _val: Fruit = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | note: enums with multiple inhabited variants have to be initialized to a variant --> $DIR/invalid_value.rs:25:1 | LL | enum Fruit { | ^^^^^^^^^^ error: the type `[bool; 2]` does not permit being left uninitialized --> $DIR/invalid_value.rs:123:31 | LL | let _val: [bool; 2] = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: booleans must be either `true` or `false` error: the type `i32` does not permit being left uninitialized --> $DIR/invalid_value.rs:126:25 | LL | let _val: i32 = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: integers must be initialized error: the type `f32` does not permit being left uninitialized --> $DIR/invalid_value.rs:129:25 | LL | let _val: f32 = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: floats must be initialized error: the type `*const ()` does not permit being left uninitialized --> $DIR/invalid_value.rs:132:31 | LL | let _val: *const () = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: raw pointers must be initialized error: the type `*const [()]` does not permit being left uninitialized --> $DIR/invalid_value.rs:135:33 | LL | let _val: *const [()] = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: raw pointers must be initialized error: the type `WrapAroundRange` does not permit being left uninitialized --> $DIR/invalid_value.rs:138:37 | LL | let _val: WrapAroundRange = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `WrapAroundRange` must be initialized inside its custom valid range note: integers must be initialized (in this struct field) --> $DIR/invalid_value.rs:48:35 | LL | pub(crate) struct WrapAroundRange(u8); | ^^ error: the type `Result` does not permit being left uninitialized --> $DIR/invalid_value.rs:143:38 | LL | let _val: Result = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | note: enums with multiple inhabited variants have to be initialized to a variant --> $SRC_DIR/core/src/result.rs:LL:COL error: the type `&i32` does not permit zero-initialization --> $DIR/invalid_value.rs:151:34 | LL | let _val: &'static i32 = mem::transmute(0usize); | ^^^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null error: the type `&[i32]` does not permit zero-initialization --> $DIR/invalid_value.rs:152:36 | LL | let _val: &'static [i32] = mem::transmute((0usize, 0usize)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: references must be non-null error: the type `NonZero` does not permit zero-initialization --> $DIR/invalid_value.rs:153:34 | LL | let _val: NonZero = mem::transmute(0); | ^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed | = note: `std::num::NonZero` must be non-null = note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null error: the type `NonNull` does not permit zero-initialization --> $DIR/invalid_value.rs:156:34 | LL | let _val: NonNull = MaybeUninit::zeroed().assume_init(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `std::ptr::NonNull` must be non-null error: the type `NonNull` does not permit being left uninitialized --> $DIR/invalid_value.rs:157:34 | LL | let _val: NonNull = MaybeUninit::uninit().assume_init(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `std::ptr::NonNull` must be non-null = note: raw pointers must be initialized error: the type `bool` does not permit being left uninitialized --> $DIR/invalid_value.rs:158:26 | LL | let _val: bool = MaybeUninit::uninit().assume_init(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: booleans must be either `true` or `false` error: aborting due to 51 previous errors