1 files changed, 1 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index 47da14bb7a..acdf488fd4 100644
--- a/intern.h
+++ b/intern.h
@@ -424,6 +424,7 @@ VALUE rb_str_times _((VALUE, VALUE));
 VALUE rb_str_substr _((VALUE, long, long));
 void rb_str_modify _((VALUE));
 VALUE rb_str_freeze _((VALUE));
+void rb_str_set_len _((VALUE, long));
 VALUE rb_str_resize _((VALUE, long));
 VALUE rb_str_cat _((VALUE, const char*, long));
 VALUE rb_str_cat2 _((VALUE, const char*));