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//opt/alt/ruby32/share/rubygems/rubygems/core_ext/kernel_warn.rb

# frozen_string_literal: true

module Kernel
  rubygems_path = "#{__dir__}/" # Frames to be skipped start with this path.

original_warn = instance_method(:warn)

remove_method :warn

class << self
    remove_method :warn
  end

module_function define_method(:warn) {|*messages, **kw|
    unless uplevel = kw[:uplevel]
      if Gem.java_platform? && RUBY_VERSION < "3.1"
        return original_warn.bind(self).call(*messages)
      else
        return original_warn.bind(self).call(*messages, **kw)
      end
    end

# Ensure `uplevel` fits a `long`
    uplevel, = [uplevel].pack("l!").unpack("l!")

if uplevel >= 0
      start = 0
      while uplevel >= 0
        loc, = caller_locations(start, 1)
        unless loc
          # No more backtrace
          start += uplevel
          break
        end

start += 1

if path = loc.path
          unless path.start_with?(rubygems_path) || path.start_with?("<internal:")
            # Non-rubygems frames
            uplevel -= 1
          end
        end
      end
      kw[:uplevel] = start
    end

original_warn.bind(self).call(*messages, **kw)
  }
end