Function transmute_unchecked 

pub const unsafe fn transmute_unchecked<Src, Dst>(val: Src) -> Dst

Transmute between two types.

Use this instead of core::mem::transmute when it is known that sizes are identical but this cannot be proven by the compiler.

This is equivalent to Rust’s transmute_unchecked intrinsics.

Safety

All safety requirements of core::mem::transmute apply, plus that the size Src and Dst must match.

Examples

This can be used when types are known to have the same size, but only at runtime.

fn to_u32<T: 'static>(v: T) -> Option<u32> {
    if TypeId::of::<T>() != TypeId::of::<u32>() {
        return None;
    }

    // `core::mem::transmute` won't work here.
    // SAFETY: We've checked that `T` is `u32`!
    Some(unsafe { kernel::mem::transmute_unchecked(v) })
}

to_u32(1u32);