1 files changed, 14 insertions, 0 deletions
diff --git a/compiler/rustc_infer/src/errors.rs b/compiler/rustc_infer/src/errors.rs
new file mode 100644
index 00000000000..76ea9c3433d
--- /dev/null
+++ b/compiler/rustc_infer/src/errors.rs
@@ -0,0 +1,14 @@
+use rustc_macros::Diagnostic;
+use rustc_span::Span;
+
+#[derive(Diagnostic)]
+#[diag(infer_opaque_hidden_type)]
+pub(crate) struct OpaqueHiddenTypeDiag {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+    #[note(infer_opaque_type)]
+    pub opaque_type: Span,
+    #[note(infer_hidden_type)]
+    pub hidden_type: Span,
+}