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null

core::ptr

Function null 

1.6.0 (const: 1.24.0) · Source 
pub const fn null<T: PointeeSized + Thin>() -> *const T
This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).
Expand description

Creates a null raw pointer.

This function is equivalent to zero-initializing the pointer: MaybeUninit::<*const T>::zeroed().assume_init(). The resulting pointer has the address 0.

§Examples

use std::ptr;

let p: *const i32 = ptr::null();
assert!(p.is_null());
assert_eq!(p as usize, 0); // this pointer has the address 0