Strange warning-message

[Sebastian Ruhs]

Hi!

I wonder why ruby throws two warning messages when the follwing script
is executed:

#!/usr/bin/ruby -w

require 'date'

aktDate=Date.today
lastRun=aktDate

lastRun.upto(aktDate) do |tDate|
puts "#{tDate.day}.#{tDate.month}.#{tDate.year}"
end
[code]

Output:
dodger@satan:~/source/ruby$ ./dateTest.rb
(eval):4: warning: instance variable @__10761__ not initialized
(eval):4: warning: instance variable @__10337__ not initialized
23.7.2004

Someone any idea?

TIA,
SR

PS: System: Debian GNU/Linux Sid with Ruby 1.8.2pre1

 

[H.Yamamoto]

Hello.

(eval):4: warning: instance variable @__10761__ not initialized
(eval):4: warning: instance variable @__10337__ not initialized
23.7.2004

This warning comes from Date#to_s, and the code below warns with same reason.

class Foo
def foo
if @val; end # evaluate uninitialized instance variable
end
end

Foo.new.foo

I don't know if this is intended warning. (1.8.1 doesn't warn)

 

[H.Yamamoto]

Hello.

Ok, if this warning comes from the use of an uninitialized instance
variable then there is a bug in the Date-class, right?

I'm not sure I can call it a bug... I think this warning message is just telling us
"You are using uninitialized variable. Do you know what you are doing? Isn't there
any spelling miss?" like "if (fp = fopen(path, "r"))" in C-language.

But anyway, this was fixed by matz yesterday. It will be included in ruby-1.8.2pre2.