diff options
| -rw-r--r-- | tests/ui/augmented-assignments.rs | 2 | ||||
| -rw-r--r-- | tests/ui/augmented-assignments.stderr | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/tests/ui/augmented-assignments.rs b/tests/ui/augmented-assignments.rs index bd2435a78bf..ca12395e432 100644 --- a/tests/ui/augmented-assignments.rs +++ b/tests/ui/augmented-assignments.rs @@ -1,5 +1,6 @@ use std::ops::AddAssign; +#[derive(Clone)] struct Int(i32); impl AddAssign for Int { @@ -12,6 +13,7 @@ fn main() { let mut x = Int(1); //~ NOTE binding `x` declared here x //~^ NOTE borrow of `x` occurs here + //~| HELP consider cloning += x; //~^ ERROR cannot move out of `x` because it is borrowed diff --git a/tests/ui/augmented-assignments.stderr b/tests/ui/augmented-assignments.stderr index d1096aea279..465b88fcd5b 100644 --- a/tests/ui/augmented-assignments.stderr +++ b/tests/ui/augmented-assignments.stderr @@ -1,5 +1,5 @@ error[E0505]: cannot move out of `x` because it is borrowed - --> $DIR/augmented-assignments.rs:16:5 + --> $DIR/augmented-assignments.rs:17:5 | LL | let mut x = Int(1); | ----- binding `x` declared here @@ -8,9 +8,14 @@ LL | x ... LL | x; | ^ move out of `x` occurs here + | +help: consider cloning the value if the performance cost is acceptable + | +LL | x.clone() + | ++++++++ error[E0596]: cannot borrow `y` as mutable, as it is not declared as mutable - --> $DIR/augmented-assignments.rs:23:5 + --> $DIR/augmented-assignments.rs:25:5 | LL | y | ^ cannot borrow as mutable |