From: Justin Collins <justincollins@...>
Date: 2011-03-04T20:48:04+09:00
Subject: Re: Splat operator gives an SystemStackError

On 03/04/2011 03:40 AM, Gunther Diemant wrote:
> Hello,
> when I'm running this programm
>
> a1 = (1..150000).to_a
>
> def splat_test(*args)
>   puts args.size
> end
>
> splat_test(*a1)
>
> I get a SystemStackError exception.
>
> My setup:
> Arch Linux
> rvm ruby 1.9.2-p0 (also tried with 1.9.2-p180)
>
> Can anyone reproduce this behavior or is this a problem with my ruby 
> install?
>
> PS: I hope this is the right place to ask this question, if not I'm 
> sorry.
>
> Greetings
> Gunther
>

You are trying to pass in 150,000 arguments to a method. Surprisingly, 
this did work for me on 1.8.7-p302. However, 1.9 has very different 
internals. This is a complete guess, but it may be trying to push all of 
those arguments onto the stack, giving the resulting error.

-Justin