1 files changed, 1 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index 6c291c6bc8..d0938df5e1 100644
--- a/intern.h
+++ b/intern.h
@@ -257,6 +257,7 @@ VALUE rb_range_new _((VALUE, VALUE, int));
 VALUE rb_range_beg_len _((VALUE, long*, long*, long, int));
 VALUE rb_length_by_each _((VALUE));
 /* re.c */
+int rb_memcmp _((char*,char*,size_t));
 VALUE rb_reg_nth_defined _((int, VALUE));
 VALUE rb_reg_nth_match _((int, VALUE));
 VALUE rb_reg_last_match _((VALUE));