error: this call for this type may be undefined behavior --> $DIR/uninit.rs:7:29 | LL | let _: usize = unsafe { MaybeUninit::uninit().assume_init() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `#[deny(clippy::uninit_assumed_init)]` on by default error: this call for this type may be undefined behavior --> $DIR/uninit.rs:10:31 | LL | let _: [u8; 0] = unsafe { MaybeUninit::uninit().assume_init() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this call for this type may be undefined behavior --> $DIR/uninit.rs:25:29 | LL | let _: usize = unsafe { mem::MaybeUninit::uninit().assume_init() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 3 previous errors