1 files changed, 1 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index aa724d0d3c..c68d5a4afb 100644
--- a/intern.h
+++ b/intern.h
@@ -221,6 +221,7 @@ VALUE reg_match_last _((VALUE));
 VALUE reg_new _((char*, int, int));
 VALUE reg_match _((VALUE, VALUE));
 VALUE reg_match2 _((VALUE));
+int reg_options _((VALUE));
 char*rb_get_kcode _((void));
 void rb_set_kcode _((char*));
 /* ruby.c */