1 files changed, 15 insertions, 0 deletions
diff --git a/compiler/rustc_expand/src/errors.rs b/compiler/rustc_expand/src/errors.rs
index 5bbf4411bc3..299ba8a1fdf 100644
--- a/compiler/rustc_expand/src/errors.rs
+++ b/compiler/rustc_expand/src/errors.rs
@@ -393,6 +393,21 @@ pub(crate) struct ProcMacroPanickedHelp {
 }
 
 #[derive(Diagnostic)]
+#[diag(expand_proc_macro_derive_panicked)]
+pub(crate) struct ProcMacroDerivePanicked {
+    #[primary_span]
+    pub span: Span,
+    #[subdiagnostic]
+    pub message: Option<ProcMacroDerivePanickedHelp>,
+}
+
+#[derive(Subdiagnostic)]
+#[help(expand_help)]
+pub(crate) struct ProcMacroDerivePanickedHelp {
+    pub message: String,
+}
+
+#[derive(Diagnostic)]
 #[diag(expand_custom_attribute_panicked)]
 pub(crate) struct CustomAttributePanicked {
     #[primary_span]