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-rw-r--r--internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index f5a463e83b..64a67e194d 100644
--- a/internal.h
+++ b/internal.h
@@ -42,6 +42,7 @@ struct vtm; /* defined by timev.h */
/* array.c */
VALUE rb_ary_last(int, VALUE *, VALUE);
void rb_ary_set_len(VALUE, long);
+VALUE rb_ary_cat(VALUE, const VALUE *, long);
/* bignum.c */
VALUE rb_big_fdiv(VALUE x, VALUE y);