From: Guillaume Cottenceau <gc@...>
Date: 2001-07-05T06:39:43+09:00
Subject: [ruby-talk:17247] Re: enhancing Ruby error messages for out of the bound constant Fixnum?

hal9000@hypermetrics.com writes:

> > But with Ruby here, it silently does, well, I don't know:
> > 
> > [gc@obiwan ~] echo -e "_123456789_" | ruby -w -pe 'sub(/
> \067/,"x")'
> > _123456x89_
> > [gc@obiwan ~] echo -e "_123456789_" | ruby -w -pe 'sub(/
> \068/,"x")'
> > _123456789_
> > [gc@obiwan ~] echo -e "_123456789_" | ruby -w -pe 'sub(/
> \070/,"x")'
> > _1234567x9_
> > 
> 
> I *think* I know what's happening in the second case.
> Ruby is smarter, not dumber, than you think.
> It realizes that 8 is not a valid octal digit, so you get
> a regex of an ASCII 6 followed by a character 8. Since this
> pattern is not matched, nothing happens.

95% of the time, you'll shoot yourself in the foot without knowing that it
overflows.



-- 
Guillaume Cottenceau - http://mandrakesoft.com/~gc/