From b49bd70f5967d32a46bce624b87595620664403c Mon Sep 17 00:00:00 2001
From: ksss <co000ri@gmail.com>
Date: Sun, 22 Jan 2017 17:50:54 +0900
Subject: Should raise RuntimeError when object frozen

---
 src/array.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/array.c')

diff --git a/src/array.c b/src/array.c
index 99f9fc8b2..669e90d02 100644
--- a/src/array.c
+++ b/src/array.c
@@ -796,6 +796,7 @@ mrb_ary_aset(mrb_state *mrb, mrb_value self)
   mrb_value v1, v2, v3;
   mrb_int i, len;
 
+  mrb_ary_modify(mrb, mrb_ary_ptr(self));
   if (mrb_get_args(mrb, "oo|o", &v1, &v2, &v3) == 2) {
     switch (mrb_type(v1)) {
     /* a[n..m] = v */
-- 
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