# [−][src]Function core::intrinsics::uninit

    pub unsafe extern "rust-intrinsic" fn uninit<T>() -> T

Deprecated since 1.38.0:

superseded by MaybeUninit, removal planned

🔬 This is a nightly-only experimental API. (`core_intrinsics`)

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

Creates an uninitialized value.

`uninit` is unsafe because there is no guarantee of what its contents are. In particular its drop-flag may be set to any state, which means it may claim either dropped or undropped. In the general case one must use `ptr::write` to initialize memory previous set to the result of `uninit`.

The stabilized version of this intrinsic is `std::mem::MaybeUninit`.