Bug #1887: nil exception can be thrown

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]

[tmat (Tomas Matousek)]

=begin
This code throws nil exception object by assigning nil to $!:

module Any
def self.===(other)
puts "#{self.inspect} === #{other.inspect}"
true
end
end

begin
begin
raise Exception.new
rescue ($!=nil; Exception)
end

puts 'after'
rescue Any
puts "rescue: #{$!.inspect}"
end

The output is:
Any === nil
rescue: nil

Expected behavior:
If $! is set to nil it is not rethrown.
=end

[naruse (Yui NARUSE)]

• Status changed from Open to Closed

=begin
$! is a read-only variable now.
=end