// Test that we cannot create objects from unsized types. trait Foo { fn foo(&self) {} } impl Foo for str {} impl Foo for [u8] {} fn test1(t: &T) { let u: &dyn Foo = t; //~^ ERROR the size for values of type } fn test2(t: &T) { let v: &dyn Foo = t as &dyn Foo; //~^ ERROR the size for values of type } fn test3() { let _: &[&dyn Foo] = &["hi"]; //~^ ERROR the size for values of type } fn test4(x: &[u8]) { let _: &dyn Foo = x as &dyn Foo; //~^ ERROR the size for values of type } fn main() { }