1 files changed, 7 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index c68cfaf984..f2aa4f63ca 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -296,8 +296,15 @@ struct rb_calling_info {
     VALUE recv;
     int argc;
     bool kw_splat;
+    VALUE heap_argv;
 };
 
+#ifndef VM_ARGC_STACK_MAX
+#define VM_ARGC_STACK_MAX 128
+#endif
+
+# define CALLING_ARGC(calling) ((calling)->heap_argv ? RARRAY_LENINT((calling)->heap_argv) : (calling)->argc)
+
 struct rb_execution_context_struct;
 
 #if 1