1 files changed, 13 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 0a4bcba5fa..af1d267b84 100644
--- a/internal.h
+++ b/internal.h
@@ -533,6 +533,7 @@ enum imemo_type {
     imemo_none,
     imemo_cref,
     imemo_svar,
+    imemo_throw_data,
     imemo_mask = 0x07
 };
 
@@ -645,6 +646,18 @@ struct vm_svar {
     const VALUE others;
 };
 
+/* THROW_DATA */
+
+struct vm_throw_data {
+    VALUE flags;
+    VALUE reserved;
+    const VALUE throw_obj;
+    const struct rb_control_frame_struct *catch_frame;
+    VALUE throw_state;
+};
+
+#define THROW_DATA_P(err) RB_TYPE_P((err), T_IMEMO)
+
 /* MEMO */
 
 struct MEMO {