rblineprof segfault

config.ru

require 'rblineprof'
run lambda {|env|
  lineprof(/./) do
    (0..10).map do |i|
      Thread.new(i) do
        print "#{i}\n"
      end
    end.each(&:join)
  end
  [200, {}, ['success']]
}

Gemfile

source 'https://rubygems.org'
gem 'rack'
gem 'rblineprof', github: 'lmarburger/rblineprof', branch: 'protect-null-frame'

Gemfile.lock

GIT
  remote: git://github.com/lmarburger/rblineprof.git
  revision: 80b907c485bf17d1a0fd3d1933675fb05031168c
  branch: protect-null-frame
  specs:
    rblineprof (0.3.2)
      debugger-ruby_core_source (~> 1.2)

GEM
  remote: https://rubygems.org/
  specs:
    debugger-ruby_core_source (1.2.2)
    rack (1.5.2)

PLATFORMS
  ruby

DEPENDENCIES
  rack
  rblineprof!

output

$ ruby -v
ruby 1.9.3p429 (2013-05-15 revision 40747) [x86_64-darwin12.3.0]

$ rackup
[2013-05-23 22:02:33] INFO  WEBrick 1.3.1
[2013-05-23 22:02:33] INFO  ruby 1.9.3 (2013-05-15) [x86_64-darwin12.3.0]
[2013-05-23 22:02:33] INFO  WEBrick::HTTPServer#start: pid=84004 port=9292
2
5
7
8
0
1
/Users/Larry/tmp/rblineprof-puma/config.ru:4: [BUG] Segmentation fault
ruby 1.9.3p429 (2013-05-15 revision 40747) [x86_64-darwin12.3.0]

-- Control frame information -----------------------------------------------
c:0020 p:---- s:0106 b:0106 l:001c10 d:000105 IFUNC
c:0019 p:---- s:0104 b:0104 l:000103 d:000103 CFUNC  :each
c:0018 p:0020 s:0101 b:0101 l:000b18 d:002188 BLOCK  /Users/Larry/tmp/rblineprof-puma/config.ru:4
c:0017 p:---- s:0099 b:0099 l:000098 d:000098 FINISH
c:0016 p:---- s:0097 b:0097 l:000096 d:000096 CFUNC  :lineprof
c:0015 p:0011 s:0093 b:0093 l:000b18 d:000040 LAMBDA /Users/Larry/tmp/rblineprof-puma/config.ru:3
c:0014 p:---- s:0090 b:0090 l:000089 d:000089 FINISH
c:0013 p:---- s:0088 b:0088 l:000087 d:000087 CFUNC  :call
c:0012 p:0103 s:0084 b:0084 l:000ef0 d:000ef0 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb:49
c:0011 p:0022 s:0078 b:0078 l:000077 d:000077 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb:37
c:0010 p:0015 s:0074 b:0074 l:000073 d:000073 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/showexceptions.rb:24
c:0009 p:0032 s:0066 b:0066 l:000065 d:000065 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/commonlogger.rb:33
c:0008 p:0015 s:0058 b:0058 l:000057 d:000057 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/chunked.rb:43
c:0007 p:0015 s:0051 b:0051 l:000050 d:000050 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/content_length.rb:14
c:0006 p:0356 s:0042 b:0042 l:000041 d:000041 METHOD /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60
c:0005 p:0257 s:0030 b:0030 l:000029 d:000029 METHOD /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpserver.rb:138
c:0004 p:0393 s:0020 b:0020 l:000019 d:000019 METHOD /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpserver.rb:94
c:0003 p:0126 s:0009 b:0009 l:002138 d:000008 BLOCK  /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/server.rb:191
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:---- s:0002 b:0002 l:000001 d:000001 TOP

-- Ruby level backtrace information ----------------------------------------
/Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
/Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/content_length.rb:14:in `call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/chunked.rb:43:in `call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/showexceptions.rb:24:in `call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb:37:in `call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb:49:in `_call'
/Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb:49:in `call'
/Users/Larry/tmp/rblineprof-puma/config.ru:3:in `block (2 levels) in <main>'
/Users/Larry/tmp/rblineprof-puma/config.ru:3:in `lineprof'
/Users/Larry/tmp/rblineprof-puma/config.ru:4:in `block (3 levels) in <main>'
/Users/Larry/tmp/rblineprof-puma/config.ru:4:in `each'

-- 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: ./vendor/bundle/bin/rackup

* Loaded features:

    0 enumerator.so
    1 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/enc/encdb.bundle
    2 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/enc/trans/transdb.bundle
    3 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/defaults.rb
    4 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/rbconfig.rb
    5 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/deprecate.rb
    6 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/exceptions.rb
    7 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/custom_require.rb
    8 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems.rb
    9 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/bundler/setup.rb
   10 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/etc.bundle
   11 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/fileutils.rb
   12 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/set.rb
   13 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/delegate.rb
   14 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/tmpdir.rb
   15 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/thread.rb
   16 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/tempfile.rb
   17 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/multipart.rb
   18 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/date_core.bundle
   19 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/date/format.rb
   20 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/date.rb
   21 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/time.rb
   22 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/common.rb
   23 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/utils.rb
   24 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack.rb
   25 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/optparse.rb
   26 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/server.rb
   27 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb
   28 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/bundler/gems/rblineprof-80b907c485bf/lib/rblineprof.bundle
   29 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/content_length.rb
   30 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/chunked.rb
   31 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/ostruct.rb
   32 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/strscan.bundle
   33 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/erb.rb
   34 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/request.rb
   35 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/showexceptions.rb
   36 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/forwardable.rb
   37 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/lint.rb
   38 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/handler.rb
   39 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/version.rb
   40 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/requirement.rb
   41 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/platform.rb
   42 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/specification.rb
   43 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/path_support.rb
   44 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/rubygems/dependency.rb
   45 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/compat.rb
   46 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/version.rb
   47 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpversion.rb
   48 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/socket.bundle
   49 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/socket.rb
   50 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httputils.rb
   51 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/fcntl.bundle
   52 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/timeout.rb
   53 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/singleton.rb
   54 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/utils.rb
   55 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/log.rb
   56 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/config.rb
   57 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/server.rb
   58 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/accesslog.rb
   59 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/htmlutils.rb
   60 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/cookie.rb
   61 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpstatus.rb
   62 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/generic.rb
   63 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/ftp.rb
   64 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/http.rb
   65 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/https.rb
   66 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/ldap.rb
   67 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/ldaps.rb
   68 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri/mailto.rb
   69 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/uri.rb
   70 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httprequest.rb
   71 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpresponse.rb
   72 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet/abstract.rb
   73 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet/filehandler.rb
   74 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet/cgihandler.rb
   75 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet/erbhandler.rb
   76 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet/prochandler.rb
   77 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpservlet.rb
   78 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpserver.rb
   79 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/authenticator.rb
   80 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/basicauth.rb
   81 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/digest.bundle
   82 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/digest.rb
   83 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/digest/md5.bundle
   84 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/digest/sha1.bundle
   85 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/digestauth.rb
   86 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/userdb.rb
   87 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/htpasswd.rb
   88 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/htdigest.rb
   89 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth/htgroup.rb
   90 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick/httpauth.rb
   91 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/webrick.rb
   92 /Users/Larry/.rbenv/versions/1.9.3-p429/lib/ruby/1.9.1/x86_64-darwin12.3.0/stringio.bundle
   93 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/handler/webrick.rb
   94 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/body_proxy.rb
   95 /Users/Larry/tmp/rblineprof-puma/vendor/bundle/gems/rack-1.5.2/lib/rack/commonlogger.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

Abort trap: 6