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Diffstat (limited to 'src/test/ui/augmented-assignments.rs')
| -rw-r--r-- | src/test/ui/augmented-assignments.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/augmented-assignments.rs b/src/test/ui/augmented-assignments.rs new file mode 100644 index 00000000000..736aa465aa7 --- /dev/null +++ b/src/test/ui/augmented-assignments.rs @@ -0,0 +1,35 @@ +// Copyright 2015 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 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::ops::AddAssign; + +struct Int(i32); + +impl AddAssign for Int { + fn add_assign(&mut self, _: Int) { + unimplemented!() + } +} + +fn main() { + let mut x = Int(1); + x //~ error: use of moved value: `x` + //~^ value used here after move + //~| note: move occurs because `x` has type `Int` + += + x; //~ value moved here + + let y = Int(2); + //~^ consider changing this to `mut y` + y //~ error: cannot borrow immutable local variable `y` as mutable + //~| cannot borrow + += + Int(1); +} |
