#![allow(dead_code, deprecated, unused_variables, unused_mut)]
struct R<'a>(&'a i32);
unsafe fn extend_lifetime<'b>(r: R<'b>) -> R<'static> {
    unsafe { std::mem::transmute::<R<'b>, R<'static>>(r) }
}
unsafe fn shorten_invariant_lifetime<'b, 'c>(r: &'b mut R<'static>) -> &'b mut R<'c> {
    unsafe { std::mem::transmute::<&'b mut R<'static>, &'b mut R<'c>>(r) }
}
fn main() {}