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* Re: Kernel.srand after_fork
  @ 2011-01-28 18:14  7%       ` Eric Wong
  0 siblings, 0 replies; 1+ results
From: Eric Wong @ 2011-01-28 18:14 UTC (permalink / raw)
  To: unicorn list

Eric Wong <normalperson@yhbt.net> wrote:
> ghazel@gmail.com wrote:
> > So, calling Kernel.srand in after_fork will fix the 1.8 bug and the
> > 1.9.1 bug and work fine on 1.9.2?

Just reported the bug to ruby-core and pushed this out:

>From f4caf6b6bdea902abaadd3c04b2af94f056c4ff1 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Fri, 28 Jan 2011 18:11:26 +0000
Subject: [PATCH] KNOWN_ISSUES: document broken RNG+fork in newer Ruby 1.8

Reported by: ghazel@gmail.com

ref: <AANLkTimTpPATTpkoD2EYA2eM1+5OzCN=WxnCygQmJdhn@mail.gmail.com>
---
 KNOWN_ISSUES |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/KNOWN_ISSUES b/KNOWN_ISSUES
index f218b83..259681d 100644
--- a/KNOWN_ISSUES
+++ b/KNOWN_ISSUES
@@ -3,6 +3,11 @@
 Occasionally odd {issues}[link:ISSUES.html] arise without a transparent or
 acceptable solution.  Those issues are documented here.
 
+* Under some versions of Ruby 1.8, it is necessary to call +srand+ in an
+  after_fork hook to get correct random number generation.
+
+  See http://redmine.ruby-lang.org/issues/show/4338
+
 * For notes on sandboxing tools such as Bundler or Isolate,
   see the {Sandbox}[link:Sandbox.html] page.
 
-- 
Eric Wong
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2011-01-28  9:57     Kernel.srand after_fork ghazel
2011-01-28 10:26     ` Eric Wong
2011-01-28 10:57       ` ghazel
2011-01-28 17:51         ` Eric Wong
2011-01-28 18:14  7%       ` Eric Wong

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