rust/tests/ui/not-panic/not-panic-safe-4.stderr
Esteban Küber 6efddac288 Provide more context on derived obligation error primary label
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:

```
error[E0277]: the trait bound `i32: Bar` is not satisfied
 --> f100.rs:6:6
  |
6 |     <i32 as Foo>::foo();
  |      ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
  |
help: this trait has no implementations, consider adding one
 --> f100.rs:2:1
  |
2 | trait Bar {}
  | ^^^^^^^^^
note: required for `i32` to implement `Foo`
 --> f100.rs:3:14
  |
3 | impl<T: Bar> Foo for T {}
  |         ---  ^^^     ^
  |         |
  |         unsatisfied trait bound introduced here
```

Fix #40120.
2024-01-30 21:28:18 +00:00

48 lines
2.2 KiB
Plaintext

error[E0277]: the type `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
--> $DIR/not-panic-safe-4.rs:9:14
|
LL | assert::<&RefCell<i32>>();
| ^^^^^^^^^^^^^ `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
|
= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<i32>`, which is required by `&RefCell<i32>: UnwindSafe`
note: required because it appears within the type `RefCell<i32>`
--> $SRC_DIR/core/src/cell.rs:LL:COL
= note: required for `&RefCell<i32>` to implement `UnwindSafe`
note: required by a bound in `assert`
--> $DIR/not-panic-safe-4.rs:6:14
|
LL | fn assert<T: UnwindSafe + ?Sized>() {}
| ^^^^^^^^^^ required by this bound in `assert`
help: consider removing the leading `&`-reference
|
LL - assert::<&RefCell<i32>>();
LL + assert::<RefCell<i32>>();
|
error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
--> $DIR/not-panic-safe-4.rs:9:14
|
LL | assert::<&RefCell<i32>>();
| ^^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
|
= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`, which is required by `&RefCell<i32>: UnwindSafe`
note: required because it appears within the type `Cell<isize>`
--> $SRC_DIR/core/src/cell.rs:LL:COL
note: required because it appears within the type `RefCell<i32>`
--> $SRC_DIR/core/src/cell.rs:LL:COL
= note: required for `&RefCell<i32>` to implement `UnwindSafe`
note: required by a bound in `assert`
--> $DIR/not-panic-safe-4.rs:6:14
|
LL | fn assert<T: UnwindSafe + ?Sized>() {}
| ^^^^^^^^^^ required by this bound in `assert`
help: consider removing the leading `&`-reference
|
LL - assert::<&RefCell<i32>>();
LL + assert::<RefCell<i32>>();
|
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.