string.subseq should update shared refcnt

dece4975 · Yukihiro Matsumoto · 361d0ca7 · dece4975
Commit dece4975 authored Jun 03, 2012 by Yukihiro Matsumoto
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src/string.c src/string.c +3 -0

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--- a/src/string.c
+++ b/src/string.c
@@ -1202,6 +1202,9 @@ mrb_str_subseq(mrb_state *mrb, mrb_value str, int beg, int len)
  s = mrb_obj_alloc_string(mrb);
  s->buf = shared->buf + beg;
  s->len = len;
+  s->aux.shared = shared;
+  s->flags |= MRB_STR_SHARED;
+  shared->refcnt++;
  return mrb_obj_value(s);
 }