rust/tests/ui/transmute/main.rs

// normalize-stderr-32bit: "`&str` \(64 bits\)" -> "`&str` ($$STR bits)"
// normalize-stderr-64bit: "`&str` \(128 bits\)" -> "`&str` ($$STR bits)"

use std::mem::transmute;

pub trait TypeConstructor<'a> {
    type T;
}

unsafe fn transmute_lifetime<'a, 'b, C>(x: <C as TypeConstructor<'a>>::T)
                                        -> <C as TypeConstructor<'b>>::T
where for<'z> C: TypeConstructor<'z> {
    transmute(x)
}

unsafe fn sizes() {
    let x: u8 = transmute(10u16); //~ ERROR cannot transmute between types of different sizes
}

unsafe fn ptrs() {
    let x: u8 = transmute("test"); //~ ERROR cannot transmute between types of different sizes
}

union Foo { x: () }
unsafe fn vary() {
    let x: Foo = transmute(10); //~ ERROR cannot transmute between types of different sizes
}

fn main() {}