diff options
| -rw-r--r-- | src/librustc_typeck/check/wfcheck.rs | 4 | ||||
| -rw-r--r-- | src/test/ui/issues/issue-58712.rs | 15 | ||||
| -rw-r--r-- | src/test/ui/issues/issue-58712.stderr | 15 |
3 files changed, 33 insertions, 1 deletions
diff --git a/src/librustc_typeck/check/wfcheck.rs b/src/librustc_typeck/check/wfcheck.rs index 16cf25f0d49..388e8282ee3 100644 --- a/src/librustc_typeck/check/wfcheck.rs +++ b/src/librustc_typeck/check/wfcheck.rs @@ -881,7 +881,9 @@ fn receiver_is_valid<'fcx, 'tcx, 'gcx>( } else { debug!("receiver_is_valid: type `{:?}` does not deref to `{:?}`", receiver_ty, self_ty); - return false + // If he receiver already has errors reported due to it, consider it valid to avoid + // unecessary errors (#58712). + return receiver_ty.references_error(); } // without the `arbitrary_self_types` feature, `receiver_ty` must directly deref to diff --git a/src/test/ui/issues/issue-58712.rs b/src/test/ui/issues/issue-58712.rs new file mode 100644 index 00000000000..577709cf291 --- /dev/null +++ b/src/test/ui/issues/issue-58712.rs @@ -0,0 +1,15 @@ +struct AddrVec<H, A> { + h: H, + a: A, +} + +impl<H> AddrVec<H, DeviceId> { + //~^ ERROR cannot find type `DeviceId` in this scope + pub fn device(&self) -> DeviceId { + //~^ ERROR cannot find type `DeviceId` in this scope + self.tail() + } +} + +fn main() {} + diff --git a/src/test/ui/issues/issue-58712.stderr b/src/test/ui/issues/issue-58712.stderr new file mode 100644 index 00000000000..6164ad7ee19 --- /dev/null +++ b/src/test/ui/issues/issue-58712.stderr @@ -0,0 +1,15 @@ +error[E0412]: cannot find type `DeviceId` in this scope + --> $DIR/issue-58712.rs:6:20 + | +LL | impl<H> AddrVec<H, DeviceId> { + | ^^^^^^^^ not found in this scope + +error[E0412]: cannot find type `DeviceId` in this scope + --> $DIR/issue-58712.rs:8:29 + | +LL | pub fn device(&self) -> DeviceId { + | ^^^^^^^^ not found in this scope + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0412`. |
