Gem::Util.gunzip

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/util.rb, line 10
def self.gunzip(data)
  require "zlib"
  require "stringio"
  data = StringIO.new(data, "r")

  gzip_reader = begin
                  Zlib::GzipReader.new(data)
                rescue Zlib::GzipFile::Error => e
                  raise e.class, e.inspect, e.backtrace
                end

  unzipped = gzip_reader.read
  unzipped.force_encoding Encoding::BINARY
  unzipped
end