6efddac288
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
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
48 lines
2.2 KiB
Plaintext
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
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--> $DIR/not-panic-safe-4.rs:9:14
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LL | assert::<&RefCell<i32>>();
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| ^^^^^^^^^^^^^ `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<i32>`, which is required by `&RefCell<i32>: UnwindSafe`
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note: required because it appears within the type `RefCell<i32>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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= note: required for `&RefCell<i32>` to implement `UnwindSafe`
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note: required by a bound in `assert`
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--> $DIR/not-panic-safe-4.rs:6:14
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LL | fn assert<T: UnwindSafe + ?Sized>() {}
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| ^^^^^^^^^^ required by this bound in `assert`
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help: consider removing the leading `&`-reference
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LL - assert::<&RefCell<i32>>();
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LL + assert::<RefCell<i32>>();
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error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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--> $DIR/not-panic-safe-4.rs:9:14
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LL | assert::<&RefCell<i32>>();
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| ^^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`, which is required by `&RefCell<i32>: UnwindSafe`
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note: required because it appears within the type `Cell<isize>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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note: required because it appears within the type `RefCell<i32>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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= note: required for `&RefCell<i32>` to implement `UnwindSafe`
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note: required by a bound in `assert`
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--> $DIR/not-panic-safe-4.rs:6:14
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LL | fn assert<T: UnwindSafe + ?Sized>() {}
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| ^^^^^^^^^^ required by this bound in `assert`
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help: consider removing the leading `&`-reference
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LL - assert::<&RefCell<i32>>();
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LL + assert::<RefCell<i32>>();
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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