From: "David A. Black" <dblack@...>
Date: 2008-07-21T00:04:55+09:00
Subject: Re: Does "rescue" wihtour argument handle any kind of Exception or not?

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Hi --

On Mon, 21 Jul 2008, I=C3=B1aki Baz Castillo wrote:

> El Domingo, 20 de Julio de 2008, Phlip escribi=C3=B3:
>> Stefano Crocco wrote:
>>>> Exception
>>>>   - StandardError
>>>>     - RuntimeError
>>>>     - ZeroDivisionError
>>>>   - ScriptError
>>>>     - SyntaxError
>>>>   - SystemExit
>>>>   - SignalException
>>>>     - Interrupt
>>>>
>>>> begin
>>>> =09raise Interrupt
>>>> rescue
>>>> =09puts "rescued !!!"
>>>> end
>>>
>>> For me, using ruby 1.8.7, patchlevel 22 on Gentoo Linux, your code work=
s
>>> as the article says, that is the exception is not being caught.
>>
>> Same with p22 on Ubuntu. (I think I compiled it, too.)
>>
>> Run p Interrupt.ancestors, and see if you get:
>>
>>   [Interrupt, SignalException, Exception, Object, Kernel]
>
> ruby1.8    1.8.6.36-1ubuntu3.1
>
> irb>  p Interrupt.ancestors
> [Interrupt, SignalException, Exception, Object, Wirble::Shortcuts,
> PP::ObjectMixin, Kernel]
>
>
> It's different!
>
>
>> Also, put p $! into the rescue handler to see _what_ you rescued!
>
> -----------
> require 'timeout'
>
> begin
>        raise Interrupt
> rescue
>        puts "rescued !!!"
>        puts $!
> end
> ----------
>
> ~# ./test.rb
> rescued !!!
> wrong number of arguments (0 for 1)
>
>
> =C2=BF?


begin
   raise Interrupt
rescue =3D> e
   puts "rescued !!!: #{e.class}"
end

It's ArgumentError in 1.8.6, and nothing (the rescue doesn't happen)
in 1.9.


David

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