diff --git a/src/test/ui/pattern/bindings-after-at/bind-by-copy.rs b/src/test/ui/pattern/bindings-after-at/bind-by-copy.rs new file mode 100644 index 00000000000..508e486afec --- /dev/null +++ b/src/test/ui/pattern/bindings-after-at/bind-by-copy.rs @@ -0,0 +1,49 @@ +// run-pass + +// Test copy + +#![feature(bindings_after_at)] + +struct A { a: i32, b: i32 } +struct B { a: i32, b: C } +struct D { a: i32, d: C } +#[derive(Copy,Clone)] +struct C { c: i32 } + +pub fn main() { + match (A {a: 10, b: 20}) { + x@A {a, b: 20} => { assert!(x.a == 10); assert!(a == 10); } + A {b: _b, ..} => { panic!(); } + } + + let mut x@B {b, ..} = B {a: 10, b: C {c: 20}}; + assert_eq!(x.a, 10); + x.b.c = 30; + assert_eq!(b.c, 20); + let mut y@D {d, ..} = D {a: 10, d: C {c: 20}}; + assert_eq!(y.a, 10); + y.d.c = 30; + assert_eq!(d.c, 20); + + let some_b = Some(B { a: 10, b: C { c: 20 } }); + + // in irrefutable pattern + if let Some(x @ B { b, .. }) = some_b { + assert_eq!(x.b.c, 20); + assert_eq!(b.c, 20); + } else { + unreachable!(); + } + + let some_b = Some(B { a: 10, b: C { c: 20 } }); + + if let Some(x @ B { b: mut b @ C { c }, .. }) = some_b { + assert_eq!(x.b.c, 20); + assert_eq!(b.c, 20); + b.c = 30; + assert_eq!(b.c, 30); + assert_eq!(c, 20); + } else { + unreachable!(); + } +}