error: the type `&T` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:40:32 | 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: the lint level is defined here --> $DIR/uninitialized-zeroed.rs:6:9 | LL | #![deny(invalid_value)] | ^^^^^^^^^^^^^ = note: references must be non-null error: the type `&T` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:41:32 | 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/uninitialized-zeroed.rs:43:38 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:17:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `Wrap<&T>` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:44:38 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:17:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `!` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:51:23 | LL | let _val: ! = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: the `!` type has no valid value error: the type `!` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:52:23 | LL | let _val: ! = mem::uninitialized(); | ^^^^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: the `!` type has no valid value error: the type `(i32, !)` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:54:30 | LL | let _val: (i32, !) = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: the `!` type has no valid value error: the type `(i32, !)` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:55:30 | 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: the `!` type has no valid value error: the type `Void` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:57:26 | LL | let _val: Void = mem::zeroed(); | ^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: enums with no variants have no valid value error: the type `Void` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:58:26 | LL | let _val: Void = 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 no variants have no valid value error: the type `&i32` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:60:34 | 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/uninitialized-zeroed.rs:61:34 | 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/uninitialized-zeroed.rs:63:25 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:14:12 | LL | struct Ref(&'static i32); | ^^^^^^^^^^^^ error: the type `Ref` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:64:25 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:14:12 | LL | struct Ref(&'static i32); | ^^^^^^^^^^^^ error: the type `fn()` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:66:26 | 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/uninitialized-zeroed.rs:67:26 | 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/uninitialized-zeroed.rs:69:32 | 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: function pointers must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:17:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `Wrap` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:70:32 | 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: function pointers must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:17:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `WrapEnum` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:72:36 | 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: function pointers must be non-null (in this enum field) --> $DIR/uninitialized-zeroed.rs:18:28 | LL | enum WrapEnum { Wrapped(T) } | ^ error: the type `WrapEnum` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:73:36 | 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: function pointers must be non-null (in this enum field) --> $DIR/uninitialized-zeroed.rs:18:28 | LL | enum WrapEnum { Wrapped(T) } | ^ error: the type `Wrap<(RefPair, i32)>` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:75:42 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:15:16 | LL | struct RefPair((&'static i32, i32)); | ^^^^^^^^^^^^^^^^^^^ error: the type `Wrap<(RefPair, i32)>` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:76:42 | 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: references must be non-null (in this struct field) --> $DIR/uninitialized-zeroed.rs:15:16 | LL | struct RefPair((&'static i32, i32)); | ^^^^^^^^^^^^^^^^^^^ error: the type `NonNull` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:78:34 | 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/uninitialized-zeroed.rs:79:34 | 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 error: the type `*const dyn Send` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:81:37 | 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/uninitialized-zeroed.rs:82:37 | 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/uninitialized-zeroed.rs:84:31 | 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/uninitialized-zeroed.rs:85:31 | 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 `bool` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:89:26 | 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/uninitialized-zeroed.rs:92:32 | 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: characters must be a valid Unicode codepoint (in this struct field) --> $DIR/uninitialized-zeroed.rs:17:18 | LL | struct Wrap { wrapped: T } | ^^^^^^^^^^ error: the type `NonBig` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:95:28 | 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 error: the type `Fruit` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:98:27 | 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 have to be initialized to a variant --> $DIR/uninitialized-zeroed.rs:26:1 | LL | enum Fruit { | ^^^^^^^^^^ error: the type `[bool; 2]` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:101:31 | 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 zero-initialization --> $DIR/uninitialized-zeroed.rs:104:34 | 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/uninitialized-zeroed.rs:105:36 | 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 `NonZeroU32` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:106:32 | LL | let _val: NonZeroU32 = mem::transmute(0); | ^^^^^^^^^^^^^^^^^ | | | this code causes undefined behavior when executed | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done | = note: `std::num::NonZeroU32` must be non-null error: the type `NonNull` does not permit zero-initialization --> $DIR/uninitialized-zeroed.rs:109:34 | 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/uninitialized-zeroed.rs:110:34 | 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 error: the type `bool` does not permit being left uninitialized --> $DIR/uninitialized-zeroed.rs:111:26 | 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 39 previous errors