1 // normalize-stderr-test "\d+ bits" -> "N bits"
2 
3 // Tests that are conservative around thin/fat pointer mismatches.
4 
5 #![allow(dead_code)]
6 
7 use std::mem::transmute;
8 
9 struct Foo<T: ?Sized> {
10     t: Box<T>
11 }
12 
13 impl<T: ?Sized> Foo<T> {
m(x: &T) -> &isize where T : Sized14     fn m(x: &T) -> &isize where T : Sized {
15         // OK here, because T : Sized is in scope.
16         unsafe { transmute(x) }
17     }
18 
n(x: &T) -> &isize19     fn n(x: &T) -> &isize {
20         // Not OK here, because T : Sized is not in scope.
21         unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes
22     }
23 }
24 
main()25 fn main() { }
26