From: "Glass_saga (Masaki Matsushita)" <glass.saga@...>
Date: 2013-07-18T20:15:14+09:00
Subject: [ruby-core:56076] [ruby-trunk - Bug #8654] SEGV in Array#count


Issue #8654 has been updated by Glass_saga (Masaki Matsushita).


> What do you think of this patch?

I already fixed it on r42040, but this ticket hasn't been closed because I have commited it with wrong commit message.
It's my fault.

However, I will add your test code.
Thank you for your patch,
----------------------------------------
Bug #8654: SEGV in Array#count
https://bugs.ruby-lang.org/issues/8654#change-40570

Author: Glass_saga (Masaki Matsushita)
Status: Assigned
Priority: Normal
Assignee: Glass_saga (Masaki Matsushita)
Category: core
Target version: current: 2.1.0
ruby -v: ruby 2.1.0dev (2013-07-18 trunk 42039) [x86_64-linux]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


Following code causes SEGV.

a1 = []
a2 = Array.new(100) {|i| i }
a2.count do |i|
  p i
  a2.replace(a1) if i == 0
end


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