1 files changed, 0 insertions, 4 deletions
diff --git a/vm_core.h b/vm_core.h
index 6e3d9cce58..1544c9a6d9 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -152,12 +152,8 @@ enum ruby_vm_throw_flags {
 };
 
 /* iseq data type */
-
-struct iseq_compile_data_ensure_node_stack;
-
 typedef struct rb_compile_option_struct rb_compile_option_t;
 
-
 struct iseq_inline_cache_entry {
     rb_serial_t ic_serial;
     rb_cref_t *ic_cref;