1 files changed, 50 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/error.rs b/compiler/rustc_middle/src/error.rs
new file mode 100644
index 000000000..18b31a75b
--- /dev/null
+++ b/compiler/rustc_middle/src/error.rs
@@ -0,0 +1,50 @@
+use rustc_macros::SessionDiagnostic;
+use rustc_span::Span;
+
+use crate::ty::Ty;
+
+#[derive(SessionDiagnostic)]
+#[diag(middle::drop_check_overflow, code = "E0320")]
+#[note]
+pub struct DropCheckOverflow<'tcx> {
+    #[primary_span]
+    pub span: Span,
+    pub ty: Ty<'tcx>,
+    pub overflow_ty: Ty<'tcx>,
+}
+
+#[derive(SessionDiagnostic)]
+#[diag(middle::opaque_hidden_type_mismatch)]
+pub struct OpaqueHiddenTypeMismatch<'tcx> {
+    pub self_ty: Ty<'tcx>,
+    pub other_ty: Ty<'tcx>,
+    #[primary_span]
+    #[label]
+    pub other_span: Span,
+    #[subdiagnostic]
+    pub sub: TypeMismatchReason,
+}
+
+#[derive(SessionSubdiagnostic)]
+pub enum TypeMismatchReason {
+    #[label(middle::conflict_types)]
+    ConflictType {
+        #[primary_span]
+        span: Span,
+    },
+    #[note(middle::previous_use_here)]
+    PreviousUse {
+        #[primary_span]
+        span: Span,
+    },
+}
+
+#[derive(SessionDiagnostic)]
+#[diag(middle::limit_invalid)]
+pub struct LimitInvalid<'a> {
+    #[primary_span]
+    pub span: Span,
+    #[label]
+    pub value_span: Span,
+    pub error_str: &'a str,
+}