From: Akinori MUSHA <knu@...>
Date: 2008-12-11T18:45:01+09:00
Subject: [ruby-core:20473] Re: [Bug #852] Ruby dies with SIGILL regarding a change in generator

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At Thu, 11 Dec 2008 17:53:03 +0900,
Nobuyoshi Nakada wrote:
> At Thu, 11 Dec 2008 14:00:33 +0900,
> Akinori MUSHA wrote in [ruby-core:20471]:
> > The attached change is planned to be merged but it causes a coredump.
> >
> > knu@daemon[1]% ruby-1.8 -rstringio -e 'x = StringIO.new("a\nb\nc"); e = x.each; e.each{|i|p i}; e.rewind; e.each{|i| p i }'
> > "a\n"
> > "b\n"
> > "c"
> > zsh: illegal hardware instruction (core dumped)  ruby-1.8 -rstringio -e
>
> SEGV without [BUG] message means system stack overflow.

Oops, I should've noticed that.

> genenrator.rb required by Enumerator#rewind in enumerator.c
> overrides he methods defined in C.

D'oh!  I was supposed to know that in the very first place.

Thanks for pointing it out.

--
Akinori MUSHA / http://akinori.org/

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