diff options
Diffstat (limited to 'tests/ui/borrowck/borrow-immutable-upvar-mutation.stderr')
| -rw-r--r-- | tests/ui/borrowck/borrow-immutable-upvar-mutation.stderr | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrow-immutable-upvar-mutation.stderr b/tests/ui/borrowck/borrow-immutable-upvar-mutation.stderr new file mode 100644 index 000000000..a0eaf1f16 --- /dev/null +++ b/tests/ui/borrowck/borrow-immutable-upvar-mutation.stderr @@ -0,0 +1,87 @@ +error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:21:27 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | let _f = to_fn(|| x = 42); + | ----- -- ^^^^^^ cannot assign + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:24:31 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | let _g = to_fn(|| set(&mut y)); + | ----- -- ^^^^^^ cannot borrow as mutable + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:29:22 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | to_fn(|| z = 42); + | ----- -- ^^^^^^ cannot assign + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:36:32 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | let _f = to_fn(move || x = 42); + | ----- ------- ^^^^^^ cannot assign + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:39:36 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | let _g = to_fn(move || set(&mut y)); + | ----- ------- ^^^^^^ cannot borrow as mutable + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:44:27 + | +LL | fn to_fn<A: std::marker::Tuple, F: Fn<A>>(f: F) -> F { + | - change this to accept `FnMut` instead of `Fn` +... +LL | to_fn(move || z = 42); + | ----- ------- ^^^^^^ cannot assign + | | | + | | in this closure + | expects `Fn` instead of `FnMut` + +error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure + --> $DIR/borrow-immutable-upvar-mutation.rs:53:9 + | +LL | fn foo() -> Box<dyn Fn() -> usize> { + | --- ---------------------- change this to return `FnMut` instead of `Fn` +LL | let mut x = 0; +LL | Box::new(move || { + | ------- in this closure +LL | x += 1; + | ^^^^^^ cannot assign + +error: aborting due to 7 previous errors + +Some errors have detailed explanations: E0594, E0596. +For more information about an error, try `rustc --explain E0594`. |