Backport #9576: Backport r44370 to revert Hash#reject behavior

• Status: Closed
• Assignee: naruse (Yui NARUSE)

[sorah (Sorah Fukumori)]

In [Bug #9223], naruse-san rejected incompatible change due to HashWithIndifferentAccess.

r44358 had changed constant name, but there was one ifdef condition still use old constant name.
r44370 fixes it to correct one, but it's not backported to 2.1.1.

So HashWithIndifferentAccess in Ruby 2.1.1 is broken because Ruby 2.1.1's Hash#reject doesn't copy extra states.

• Commits around this change: https://gist.github.com/sorah/9265008
• Rails' issue: https://github.com/rails/rails/issues/14188

[naruse (Yui NARUSE)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

Applied in changeset r45227.

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merge revision(s) 44370: [Backport #9576]

hash.c: extra states

* hash.c (rb_hash_reject): use words "extra states".