From kde-bindings  Fri Mar 16 11:51:51 2007
From: "Caleb Tennis" <caleb () aei-tech ! com>
Date: Fri, 16 Mar 2007 11:51:51 +0000
To: kde-bindings
Subject: [Kde-bindings] qtruby crash
Message-Id: <53809.192.168.2.155.1174045911.squirrel () www ! aei-tech ! com>
X-MARC-Message: https://marc.info/?l=kde-bindings&m=117404673404357

Found an interesting bug/crash in QtRuby (Qt4).  Check out this code:

-------

require 'Qt4'

class TestClass < Qt::Widget
  slots 'timeoutSlot()'

  def initialize(parent)
    super(parent)

    t = Qt::Timer.new(self)
    connect(t, SIGNAL('timeout()'), self, SLOT('timeoutSlot()'))
    t.start(1000)
  end

  def timeoutSlot
    puts "Got timeout"
  end

end

class TestClass2 < TestClass

  def initialize(parent)
    super(parent)
  end

  def timeoutSlot
    puts "Overriding the timeout"
  end
end

app = Qt::Application.new(ARGV)
tc = TestClass2.new(nil)
tc.show
app.exec

------

Notice how TestClass2 overrides 'timeoutSlot', but never declares it as a slot.

Adding a slot declaration to TestClass2 fixes the crash and the program runs like
you would expect.

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