From: Ryan Davis <ryand-ruby@...>
Date: 2009-05-19T06:24:06+09:00
Subject: [ruby-core:23497] Interrupt < Signal, but initialize mismatched

this problem exists on 1.8 and 1.9 and was previously reported by Eric  
Hodel in possibly a slightly different form/vector.

> static VALUE
> interrupt_init(argc, argv, self)
>      int argc;
>      VALUE *argv;
>      VALUE self;
> {
>     VALUE args[2];
>
>     args[0] = INT2FIX(SIGINT);
>     rb_scan_args(argc, argv, "01", &args[1]);
>
>     return rb_call_super(2, args);
> }

vs esignal_init:

>     if (argc < 1 || argnum < argc) {
>         rb_raise(rb_eArgError, "wrong number of arguments (%d for  
> %d)",
>                  argc, argnum);
>     }

Examples:

> 504 % ruby -v -e 'raise Interrupt'
> ruby 1.8.6 (2008-08-11 patchlevel 287) [universal-darwin9.0]
> -e:1:in `initialize': wrong number of arguments (0 for 1)  
> (ArgumentError)
> 	from -e:1:in `exception'
> 	from -e:1:in `raise'
> 	from -e:1

> % ruby -v -rtimeout -e 'raise Timeout::Error'
> ruby 1.8.6 (2008-08-11 patchlevel 287) [universal-darwin9.0]
> -e:1:in `initialize': wrong number of arguments (0 for 1)  
> (ArgumentError)
> 	from -e:1:in `exception'
> 	from -e:1:in `raise'
> 	from -e:1

found via resolv.rb:

>   class ResolvTimeout < TimeoutError; end

...

>       def request(sender, tout)
>         timelimit = Time.now + tout
>         sender.send
>         while (now = Time.now) < timelimit
>           timeout = timelimit - now
>           if !IO.select([@sock], nil, nil, timeout)
>             raise ResolvTimeout
>           end
>