From: Joe Van Dyk <joevandyk@...>
Date: 2005-04-05T03:55:02+09:00
Subject: Re: Extension question

On Apr 4, 2005 8:34 AM, Charles Mills <cmills@freeshell.org> wrote:
> 
> > Are there any general rules of thumb that you use when writing
> extensions?
> 
> http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/47700
> 
> You shouldn't be able to cause your extension to seg fault from Ruby.
> That may sound like a joke, but I just mean using StringValue,
> NUM2LONG, etc before you starting using Ruby objects in C.

How should errors be handled in C extensions?  For example, my C
extension was expecting a Ruby string, but it was passed an IO object.

Or, what should I do when I try to open a file in C (the filename
being passed to the function) and the file doesn't exist?