Nokogiri custom xpath function segfault

custom-functions.rb

require 'nokogiri'

xml = %q{
<foo>
  <foo/>
</foo>
}

doc = Nokogiri::XML.parse(xml)
puts doc.xpath('//foo[bool_function(bar/baz)]', Class.new {
  def bool_function(value)
    true
  end
}.new)

log-1.5.0

<foo>
  <foo/>
</foo>
<foo/>

log-1.5.2

/Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:159: [BUG] Segmentation fault
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]

-- Control frame information -----------------------------------------------
c:0008 p:---- s:0031 b:0031 l:000030 d:000030 CFUNC  :evaluate
c:0007 p:0101 s:0026 b:0026 l:000016 d:000025 BLOCK  /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:159
c:0006 p:---- s:0022 b:0022 l:000021 d:000021 FINISH
c:0005 p:---- s:0020 b:0020 l:000019 d:000019 CFUNC  :map
c:0004 p:0070 s:0017 b:0017 l:000016 d:000016 METHOD /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:150
c:0003 p:0075 s:0009 b:0008 l:002138 d:000078 EVAL   custom-functions.rb:10
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:002138 d:002138 TOP   

-- Ruby level backtrace information ----------------------------------------
custom-functions.rb:10:in `<main>'
/Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:150:in `xpath'
/Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:150:in `map'
/Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:159:in `block in xpath'
/Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb:159:in `evaluate'

-- C level backtrace information -------------------------------------------

   See Crash Report log file under ~/Library/Logs/CrashReporter or
   /Library/Logs/CrashReporter, for the more detail of.

-- Other runtime information -----------------------------------------------

* Loaded script: custom-functions.rb

* Loaded features:

    0 enumerator.so
    1 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/enc/encdb.bundle
    2 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/enc/trans/transdb.bundle
    3 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/defaults.rb
    4 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/rbconfig.rb
    5 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/deprecate.rb
    6 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/exceptions.rb
    7 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb
    8 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems.rb
    9 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/version.rb
   10 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb
   11 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/platform.rb
   12 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb
   13 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/path_support.rb
   14 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb
   15 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/nokogiri.bundle
   16 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/version.rb
   17 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/syntax_error.rb
   18 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/pp/node.rb
   19 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/pp/character_data.rb
   20 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/pp.rb
   21 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/parse_options.rb
   22 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/sax/document.rb
   23 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/sax/parser_context.rb
   24 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/sax/parser.rb
   25 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/sax/push_parser.rb
   26 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/sax.rb
   27 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/stringio.bundle
   28 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node/save_options.rb
   29 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node.rb
   30 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/attribute_decl.rb
   31 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/element_decl.rb
   32 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/element_content.rb
   33 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/character_data.rb
   34 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/namespace.rb
   35 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/attr.rb
   36 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/dtd.rb
   37 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/cdata.rb
   38 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/text.rb
   39 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/document.rb
   40 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/document_fragment.rb
   41 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/processing_instruction.rb
   42 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/node_set.rb
   43 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/syntax_error.rb
   44 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/xpath/syntax_error.rb
   45 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/xpath.rb
   46 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/xpath_context.rb
   47 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/builder.rb
   48 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/reader.rb
   49 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/notation.rb
   50 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/entity_decl.rb
   51 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/schema.rb
   52 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml/relax_ng.rb
   53 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xml.rb
   54 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xslt/stylesheet.rb
   55 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/xslt.rb
   56 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/entity_lookup.rb
   57 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/document.rb
   58 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/document_fragment.rb
   59 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/sax/parser_context.rb
   60 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/sax/parser.rb
   61 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/sax/push_parser.rb
   62 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/element_description.rb
   63 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/element_description_defaults.rb
   64 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html.rb
   65 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/decorators/slop.rb
   66 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/node.rb
   67 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/xpath_visitor.rb
   68 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/racc/cparse.bundle
   69 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/racc/parser.rb
   70 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/thread.rb
   71 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/parser_extras.rb
   72 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/parser.rb
   73 /Users/andrew/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/x86_64-darwin10.8.0/strscan.bundle
   74 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/tokenizer.rb
   75 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css/syntax_error.rb
   76 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/css.rb
   77 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri/html/builder.rb
   78 /Users/andrew/.rvm/gems/ruby-1.9.3-p0/gems/nokogiri-1.5.2/lib/nokogiri.rb

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

Fix released in Nokogiri 1.5.3.