Gem.write_binary

# File tmp/rubies/ruby-3.0.5/lib/rubygems.rb, line 802
def self.write_binary(path, data)
  File.open(path, File::RDWR | File::CREAT | File::BINARY | File::LOCK_EX) do |io|
    io.write data
  end
rescue *WRITE_BINARY_ERRORS
  File.open(path, 'wb') do |io|
    io.write data
  end
rescue Errno::ENOLCK # NFS
  if Thread.main != Thread.current
    raise
  else
    File.open(path, 'wb') do |io|
      io.write data
    end
  end
end