From: Eric Wong <normalperson@...>
Date: 2014-10-02T18:52:37+00:00
Subject: [ruby-core:65374] Re: [ruby-trunk - misc #10278] [RFC] st.c: use ccan linked list

A fixup patch for packed => unpacked transitions:

http://80x24.org/spew/m/st-ccan-ll-fixup-1%4080x24.org.txt

This needs tests, but it seems the packed => unpacked transitions during
iteration are totally untested in the current Ruby implementation.
Fortunately, it seems hash.c bans such transitions.

I suppose I can write tests to explicitly test for these changes,
but it may be easier and cheaper to bail out (possibly raise an error)