1 files changed, 1 insertions, 0 deletions
diff --git a/iseq.h b/iseq.h
index 98cf71d52c..d771874c2f 100644
--- a/iseq.h
+++ b/iseq.h
@@ -31,6 +31,7 @@ RUBY_EXTERN const int ruby_api_version[];
 typedef struct rb_iseq_struct rb_iseq_t;
 #define rb_iseq_t rb_iseq_t
 #endif
+typedef void (*rb_iseq_callback)(const rb_iseq_t *);
 
 extern const ID rb_iseq_shared_exc_local_tbl[];