Calling realpath on Solaris symlink causes NPE
----------------------------------------------
Key: JRUBY-2155
URL: http://jira.codehaus.org/browse/JRUBY-2155
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1RC2
Environment: Solaris
Reporter: Rod Cope
Priority: Blocker
Fix For: JRuby 1.1
Looks like RubyFile.readlink blows up on Solaris. This same code works fine on
various flavors of Windows and Linux and on Solaris with MRI. The issue may be
resolved when JRUBY-1889 is implemented, but I don't think it should NPE in any
case.
I'd like to make a special request to have this fixed quickly as we're planning
to release a private beta of the Open Source Census (osscensus.org) by Monday,
February 25. I really want to use JRuby for a number of reasons, but will have
to fall back to Ruby for our Solaris distribution until this issue is resolved.
Thanks for your consideration.
-------------------
Details:
1) Environment stuff:
'java -version' returns:
java version "1.5.0_07"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-b03) Java
HotSpot(TM) Client VM (build 1.5.0_07-b03, mixed mode, sharing)
'uname -a' returns:
SunOS sundev1 5.10 Generic_118833-33 sun4u sparc SUNW,Sun-Blade-1000
2) Doing an 'ls -l' in the directory '/home/tester/tmp/jruby-npe-test' shows
this:
total 2
-rw-r--r-- 1 tester other 0 Feb 19 15:02 a_file
lrwxrwxrwx 1 tester other 38 Feb 19 15:04 a_link_to_file ->
/home/tester/tmp/jruby-npe-test/a_file
3) The contents of the file '/home/tester/jruby_solaris_symlink_bug.rb' are:
require 'pathname'
symlink_path = "/home/tester/tmp/jruby-npe-test/a_link_to_file"
puts "symlink_path = '#{symlink_path}'"
val_pathname = Pathname.new(symlink_path)
puts "val_pathname = '#{val_pathname}'"
val_realpath = val_pathname.realpath
puts "val_realpath = '#{val_realpath}'"
4) Running this command '/home/tester/jruby-1.1RC2/bin/jruby
/home/tester/jruby_solaris_symlink_bug.rb' produces the following output:
symlink_path = '/home/tester/tmp/jruby-npe-test/a_link_to_file'
val_pathname = '/home/tester/tmp/jruby-npe-test/a_link_to_file'
Exception in thread "main" java.lang.NullPointerException
at org.jruby.util.ByteList.plain(ByteList.java:683)
at org.jruby.RubyString.<init>(RubyString.java:127)
at org.jruby.RubyString.newString(RubyString.java:499)
at org.jruby.Ruby.newString(Ruby.java:2106)
at org.jruby.RubyFile.readlink(RubyFile.java:1404)
at org.jruby.RubyFileInvoker$readlink_method_1_0.call(Unknown Source)
at
org.jruby.internal.runtime.methods.JavaMethod$JavaMethodOne.call(JavaMethod.java:120)
at
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:66)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:166)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:301)
at org.jruby.evaluator.ASTInterpreter.callNode(ASTInterpreter.java:657)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:308)
at
org.jruby.evaluator.ASTInterpreter.setupArgs(ASTInterpreter.java:2155)
at
org.jruby.evaluator.ASTInterpreter.fCallNode(ASTInterpreter.java:1095)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:354)
at
org.jruby.evaluator.ASTInterpreter.toAryNode(ASTInterpreter.java:1681)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:474)
at
org.jruby.evaluator.ASTInterpreter.multipleAsgnNode(ASTInterpreter.java:1329)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:399)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at
org.jruby.evaluator.ASTInterpreter.untilNode(ASTInterpreter.java:1711)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:480)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at org.jruby.evaluator.ASTInterpreter.eval(ASTInterpreter.java:168)
at
org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:176)
at
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:66)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:166)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:301)
at
org.jruby.evaluator.ASTInterpreter.fCallNode(ASTInterpreter.java:1100)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:354)
at
org.jruby.evaluator.ASTInterpreter.toAryNode(ASTInterpreter.java:1681)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:474)
at
org.jruby.evaluator.ASTInterpreter.multipleAsgnNode(ASTInterpreter.java:1329)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:399)
at org.jruby.evaluator.ASTInterpreter.blockNode(ASTInterpreter.java:631)
at
org.jruby.evaluator.ASTInterpreter.evalInternal(ASTInterpreter.java:302)
at org.jruby.evaluator.ASTInterpreter.eval(ASTInterpreter.java:168)
at
org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:176)
at
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:70)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:181)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:329)
at
ruby.home.tester.jruby_solaris_symlink_bug.__file__(/home/tester/jruby_solaris_symlink_bug.rb:7)
at
ruby.home.tester.jruby_solaris_symlink_bug.load(/home/tester/jruby_solaris_symlink_bug.rb)
at org.jruby.Ruby.runScript(Ruby.java:491)
at org.jruby.Ruby.runNormally(Ruby.java:411)
at org.jruby.Ruby.runFromMain(Ruby.java:291)
at org.jruby.Main.run(Main.java:142)
at org.jruby.Main.run(Main.java:88)
at org.jruby.Main.main(Main.java:79)
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