1 files changed, 14 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/error.rs b/compiler/rustc_middle/src/error.rs
index b0187a1848c..b30d3a950c6 100644
--- a/compiler/rustc_middle/src/error.rs
+++ b/compiler/rustc_middle/src/error.rs
@@ -37,6 +37,20 @@ pub struct OpaqueHiddenTypeMismatch<'tcx> {
     pub sub: TypeMismatchReason,
 }
 
+#[derive(Diagnostic)]
+#[diag(middle_unsupported_union)]
+pub struct UnsupportedUnion {
+    pub ty_name: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(middle_autodiff_unsafe_inner_const_ref)]
+pub struct AutodiffUnsafeInnerConstRef {
+    #[primary_span]
+    pub span: Span,
+    pub ty: String,
+}
+
 #[derive(Subdiagnostic)]
 pub enum TypeMismatchReason {
     #[label(middle_conflict_types)]