1 files changed, 1 insertions, 0 deletions
diff --git a/vm.h b/vm.h
index c496e59df3..0104203892 100644
--- a/vm.h
+++ b/vm.h
@@ -18,6 +18,7 @@ typedef unsigned long rb_num_t;
 typedef unsigned long lindex_t;
 typedef unsigned long dindex_t;
 typedef rb_num_t GENTRY;
+typedef rb_iseq_t *ISEQ;
 
 extern VALUE rb_cEnv;
 extern VALUE ruby_vm_global_state_version;