2 // Test that all coercions can actually be done using casts (modulo the lints).
4 #![allow(trivial_casts, trivial_numeric_casts)]
16 let _ = 42_i32 as i32;
21 let _ = x as *const u32;
23 let x: &mut u32 = &mut 42;
24 let _ = x as *mut u32;
27 let x: &[u32; 3] = &[42, 43, 44];
29 let _ = x as *const [u32];
31 let x: &mut [u32; 3] = &mut [42, 43, 44];
32 let _ = x as &mut [u32];
33 let _ = x as *mut [u32];
35 let x: Box<[u32; 3]> = Box::new([42, 43, 44]);
36 let _ = x as Box<[u32]>;
40 let _ = x as &dyn Foo;
41 let _ = x as *const dyn Foo;
43 let x: &mut Bar = &mut Bar;
44 let _ = x as &mut dyn Foo;
45 let _ = x as *mut dyn Foo;
47 let x: Box<Bar> = Box::new(Bar);
48 let _ = x as Box<dyn Foo>;
52 let _ = &baz as &dyn Fn(i32);
54 let _ = &x as &dyn Fn(i32);
58 pub fn test_subtyping<'a, 'b: 'a>(a: &'a Bar, b: &'b Bar) {