Function core::mem::transmute_copy

pub unsafe fn transmute_copy<T, U>(src: &T) -> U

Interprets src as &U, and then reads src without moving the contained value.

This function will unsafely assume the pointer src is valid for sizeof(U) bytes by transmuting &T to &U and then reading the &U. It will also unsafely create a copy of the contained value instead of moving out of src.

It is not a compile-time error if T and U have different sizes, but it is highly encouraged to only invoke this function where T and U have the same size. This function triggers undefined behavior if U is larger than T.

Examples

fn main() { use std::mem; let one = unsafe { mem::transmute_copy(&1) }; assert_eq!(1, one); }

use std::mem;

let one = unsafe { mem::transmute_copy(&1) };

assert_eq!(1, one);