From: Jason Roelofs <jameskilton@...>
Date: 2010-08-24T10:36:26+09:00
Subject: [ruby-core:31837] GC changes from 1.9.2-rc2 to 1.9.2 final

A library I maintain (http://rice.rubyforge.org) has been running great through the various 1.9.2 development and release candidates. RC1 and RC2 ran perfectly, but now that 1.9.2 is final, I get segfaults on rb_gc_unregister_address. The same code runs fine under 1.8.6, 1.8.7, and as I mentioned the 1.9.2 release candidates.

I've been completely unable to track this down or even build a test case outside of the library, so I'm here wondering what changed between RC2 and final that would cause this method to segfault. The best I can figure is there might be a double-free going on, but I'd love some pointers if anyone can help.

Thanks

Jason