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authorEsteban Küber <esteban@kuber.com.ar>2024-01-29 18:31:02 +0000
committerEsteban Küber <esteban@kuber.com.ar>2024-01-30 21:28:18 +0000
commit6efddac288643c4b0bc85ea317ea275e6cb4739f (patch)
tree2a8729a40eb6266fc410458c64066fa3ffa40c94 /tests/ui/union
parentf3d71c9249072413f014b378bb5ea79c8a7dc9a7 (diff)
downloadrust-6efddac288643c4b0bc85ea317ea275e6cb4739f.tar.gz
rust-6efddac288643c4b0bc85ea317ea275e6cb4739f.zip
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.
Diffstat (limited to 'tests/ui/union')
-rw-r--r--tests/ui/union/projection-as-union-type-error-2.stderr2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/ui/union/projection-as-union-type-error-2.stderr b/tests/ui/union/projection-as-union-type-error-2.stderr
index 3b073ca1fb4..39cdf30d860 100644
--- a/tests/ui/union/projection-as-union-type-error-2.stderr
+++ b/tests/ui/union/projection-as-union-type-error-2.stderr
@@ -2,7 +2,7 @@ error[E0277]: the trait bound `u8: NotImplemented` is not satisfied
   --> $DIR/projection-as-union-type-error-2.rs:18:8
    |
 LL |     a: <Foo as Identity>::Identity,
-   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `NotImplemented` is not implemented for `u8`
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `NotImplemented` is not implemented for `u8`, which is required by `u8: Identity`
    |
 help: this trait has no implementations, consider adding one
   --> $DIR/projection-as-union-type-error-2.rs:9:1