/usr/lib/ruby/vendor_ruby/active_support/core_ext/date/freeze.rb is in ruby-activesupport-3.2 3.2.16-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | # Date memoizes some instance methods using metaprogramming to wrap
# the methods with one that caches the result in an instance variable.
#
# If a Date is frozen but the memoized method hasn't been called, the
# first call will result in a frozen object error since the memo
# instance variable is uninitialized.
#
# Work around by eagerly memoizing before the first freeze.
#
# Ruby 1.9 uses a preinitialized instance variable so it's unaffected.
# This hack is as close as we can get to feature detection:
if RUBY_VERSION < '1.9'
require 'date'
begin
::Date.today.freeze.jd
rescue => frozen_object_error
if frozen_object_error.message =~ /frozen/
class Date #:nodoc:
def freeze
unless frozen?
self.class.private_instance_methods(false).each do |m|
if m.to_s =~ /\A__\d+__\Z/
instance_variable_set(:"@#{m}", [send(m)])
end
end
end
super
end
end
end
end
end
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