From dff2b395d21e8e6f322a3de2e68d20451afc08f3 Mon Sep 17 00:00:00 2001 From: Jorge Aparicio Date: Wed, 3 Dec 2014 02:34:49 -0500 Subject: [PATCH] Test binops move semantics --- src/test/compile-fail/binop-move-semantics.rs | 69 +++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 src/test/compile-fail/binop-move-semantics.rs diff --git a/src/test/compile-fail/binop-move-semantics.rs b/src/test/compile-fail/binop-move-semantics.rs new file mode 100644 index 00000000000..d9440e18375 --- /dev/null +++ b/src/test/compile-fail/binop-move-semantics.rs @@ -0,0 +1,69 @@ +// Copyright 2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Test that move restrictions are enforced on overloaded binary operations + +fn double_move>(x: T) { + x + + + x; //~ ERROR: use of moved value +} + +fn move_then_borrow + Clone>(x: T) { + x + + + x.clone(); //~ ERROR: use of moved value +} + +fn move_borrowed>(x: T, mut y: T) { + let m = &x; + let n = &mut y; + + x //~ ERROR: cannot move out of `x` because it is borrowed + + + y; //~ ERROR: cannot move out of `y` because it is borrowed +} + +fn illegal_dereference>(mut x: T, y: T) { + let m = &mut x; + let n = &y; + + *m //~ ERROR: cannot move out of dereference of `&mut`-pointer + + + *n; //~ ERROR: cannot move out of dereference of `&`-pointer +} + +struct Foo; + +impl<'a, 'b> Add<&'b Foo, ()> for &'a mut Foo { + fn add(self, _: &Foo) {} +} + +impl<'a, 'b> Add<&'b mut Foo, ()> for &'a Foo { + fn add(self, _: &mut Foo) {} +} + +fn mut_plus_immut() { + let mut f = Foo; + + &mut f + + + &f; //~ ERROR: cannot borrow `f` as immutable because it is also borrowed as mutable +} + +fn immut_plus_mut() { + let mut f = Foo; + + &f + + + &mut f; //~ ERROR: cannot borrow `f` as mutable because it is also borrowed as immutable +} + +fn main() {}