Is it bug?

ruby-talk
1

Hi, all
[root@home1 ~]# ruby -v
ruby 1.9.0 (2007-06-30 patchlevel 0) [i686-linux]
[root@home1 ~]# irb
irb(main):001:0> class C
irb(main):002:1> def C.hello
irb(main):003:2> p "helloc"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> class A < C
irb(main):007:1> def A.hello
irb(main):008:2> p "C #{hello}"
irb(main):009:2> end
irb(main):010:1> hello
irb(main):011:1> end
(irb):8:in `hello': stack level too deep (SystemStackError)
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
        from (irb):8:in `hello'
         ... 6881 levels...

···

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2

Chung Chung wrote:

Hi, all
[root@home1 ~]# ruby -v
ruby 1.9.0 (2007-06-30 patchlevel 0) [i686-linux]
[root@home1 ~]# irb
irb(main):001:0> class C
irb(main):002:1> def C.hello
irb(main):003:2> p "helloc"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> class A < C
irb(main):007:1> def A.hello
irb(main):008:2> p "C #{hello}"
irb(main):009:2> end
irb(main):010:1> hello
irb(main):011:1> end

It is not a bug. You recursively call A.hello. You want:
p "C #{super}"

Regards
Stefan

···

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3

Quoting Chung Chung <bkeh12@gmail.com>:

Hi, all
[root@home1 ~]# ruby -v
ruby 1.9.0 (2007-06-30 patchlevel 0) [i686-linux]
[root@home1 ~]# irb
irb(main):001:0> class C
irb(main):002:1> def C.hello
irb(main):003:2> p "helloc"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> class A < C
irb(main):007:1> def A.hello
irb(main):008:2> p "C #{hello}"
irb(main):009:2> end
irb(main):010:1> hello
irb(main):011:1> end
(irb):8:in `hello': stack level too deep (SystemStackError)
        from (irb):8:in `hello'
         ... 6881 levels...

Why would you consider this a bug? What on earth were you expecting it to do? You define a method with no arguments that always calls itself, and then you call it, and ruby complains from the infinite recursion.

What else would you have it do?

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4

Daniel Martin wrote:

What else would you have it do?

I hope ruby can contextual valid...:slight_smile:

···

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