Issue #7855 has been reported by nathanaeljones (Nathanael Jones). ---------------------------------------- Bug #7855: Rare segfault within yielding block https://bugs.ruby-lang.org/issues/7855 Author: nathanaeljones (Nathanael Jones) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: ruby 1.9.3p362 (2012-12-25 revision 38607) [x86_64-darwin12.2.0] I'm getting a segfault every few days inside an enumerator yield block: Enumerator.new do |y| cache.each do |k,v| y << v if yield(v) #segfaulting here every million executions or so end end Source code: https://github.com/nathanaeljones/hardwired/blob/master/lib/hardwired/index.rb Full crash info https://gist.github.com/nathanaeljones/4686226 Another instance it happened https://gist.github.com/nathanaeljones/4957920 -- http://bugs.ruby-lang.org/