From: KOSAKI Motohiro <kosaki.motohiro@...>
Date: 2012-02-25T18:06:32+09:00
Subject: [ruby-core:42913] Re: [ruby-trunk - Feature #6083] Hide a Bignum definition

> Binary hackers can handle C structs even if it is a hidden private struct.
> So it should be enough simply to declare "struct RBignunm is not a public API".

I disagree. As far as we consider there is backdoor, every binary
compatibility effort are
not meaningful. But I believe it clearly has a worth.