From: Nobuyoshi Nakada <nobu@...>
Date: 2007-07-22T11:00:02+09:00
Subject: Re: Bug? array.push(*array) segfault

Hi,

At Sun, 22 Jul 2007 09:30:58 +0900,
Ron M wrote in [ruby-core:11777]:
> Is this a good place to report bugs?

Yes.

> I'm getting this segfault with ruby 1.8.4 and 1.8.6 with
> this one liner:
> 
> % ruby -e 'a = [1,2,3,4,5]; (1..20).each{ a.push(*a)}'
> Segmentation fault

SEGV without [BUG] message means stack overflow.  a.push(*a)
doubles a, and repeating it 20 times makes a 1<<20 times.

This issue is same as [ruby-talk:255290], and can be avoided by
not using alloca() as I mentioned in [ruby-talk:255418].

-- 
Nobu Nakada