1 files changed, 3 insertions, 0 deletions
diff --git a/src/array.c b/src/array.c
index bfa6e5f06..2152e292d 100644
--- a/src/array.c
+++ b/src/array.c
@@ -377,6 +377,9 @@ ary_replace(mrb_state *mrb, struct RArray *a, struct RArray *b)
     if (ARY_EMBED_P(a)) {
       ARY_UNSET_EMBED_FLAG(a);
     }
+    else {
+      mrb_free(mrb, a->as.heap.ptr);
+    }
     a->as.heap.ptr = b->as.heap.ptr;
     a->as.heap.len = len;
     a->as.heap.aux.shared = b->as.heap.aux.shared;