require 'rexml/document'
require 'tempfile'
include REXML

#- rexml sanity check again (bug in ruby 1.8.6-p111)
xmldoc = Document.new "<booh/>"
xmldoc << XMLDecl.new(XMLDecl::DEFAULT_VERSION, 'UTF-8')
elem = xmldoc.root.add_element('elem')
elem.add_text('cdata')
tmp = Tempfile.new("sanitytemp")
tmp.close!
ios = File.open(sanity_filename = tmp.path, File::RDWR|File::CREAT|File::EXCL)
xmldoc.write(ios, 0)
ios.close

xmldoc = Document.new(File.new(sanity_filename))
File.delete(sanity_filename)
if xmldoc.root.elements['elem'].get_text.value != 'cdata'
    puts "REXML sanity check failed (this is normal with unpatched ruby-1.8.6-p111, which ships a broken REXML). For safeness, won't proceed."
    puts "Notice for bug reporting: REXML has version: #{REXML::VERSION} at date: #{REXML::DATE}."
    exit 1
end