From: Eric Wong <normalperson@...>
Date: 2013-12-03T02:21:55+00:00
Subject: [ruby-core:58814] Re: [ruby-trunk - Bug #9202] Array#uniq freezes duplicate strings

bisected to r43194:

    * array.c (rb_ary_uniq): use rb_hash_keys().

    * internal.h: define rb_hash_keys() as internal API.

    * hash.c (rb_hash_keys): ditto.