Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Java::JavaLang::NullPointerException when calling super in method in duped module included in subclass #1070

Closed
headius opened this issue Oct 1, 2013 · 2 comments
Closed

Java::JavaLang::NullPointerException when calling super in method in duped module included in subclass #1070

headius opened this issue Oct 1, 2013 · 2 comments
Milestone
JRuby 1.7.13

Comments

@headius
Copy link
Member

headius commented Oct 1, 2013

Copied from http://jira.codehaus.org/browse/JRUBY-7172

Running the following code causes a Java::JavaLang::NullPointerException in all JRuby installations I tried. It happens in irb, but not if you put the code in a file and run it from the command line.

class A
  def b
  end
end

module M
  def b
    super
  end
end

class B < A
  include M.dup
end
B.new.b
Java::JavaLang::NullPointerException:
        from org.jruby.runtime.callsite.SuperCallSite.pollAndGetClass(SuperCallSite.java:455)
        from org.jruby.runtime.callsite.SuperCallSite.callBlock(SuperCallSite.java:140)
        from org.jruby.runtime.callsite.SuperCallSite.call(SuperCallSite.java:151)
        from org.jruby.runtime.callsite.SuperCallSite.callVarargs(SuperCallSite.java:107)
        from org.jruby.ast.ZSuperNode.interpret(ZSuperNode.java:103)
        from org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
        from org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
        from org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:139)
        from org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:170)
        from org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:306)
        from org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:136)
        from org.jruby.ast.CallNoArgNode.interpret(CallNoArgNode.java:60)
        from org.jruby.ast.FCallOneArgNode.interpret(FCallOneArgNode.java:36)
        from org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
        from org.jruby.ast.RootNode.interpret(RootNode.java:129)
        from org.jruby.evaluator.ASTInterpreter.INTERPRET_EVAL(ASTInterpreter.java:95)
... 121 levels...
        from org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
        from org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
        from org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182)
        from org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:186)
        from org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:326)
        from org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170)
        from usr.local.jruby.bin.jirb.__file__(/usr/local/jruby/bin/jirb:13)
        from usr.local.jruby.bin.jirb.load(/usr/local/jruby/bin/jirb)
        from org.jruby.Ruby.runScript(Ruby.java:807)
        from org.jruby.Ruby.runScript(Ruby.java:800)
        from org.jruby.Ruby.runNormally(Ruby.java:669)
        from org.jruby.Ruby.runFromMain(Ruby.java:518)
        from org.jruby.Main.doRunFromMain(Main.java:390)
        from org.jruby.Main.internalRun(Main.java:279)
        from org.jruby.Main.run(Main.java:221)
        from org.jruby.Main.main(Main.java:201)
@headius
Copy link
Member Author

headius commented Oct 1, 2013

Mike Luu got the same issue with different code, commenting in the original issue:

class Foo; end

module A
def bar; 1; end
end

module AA
def bar; super+1; end
end

q = Foo.new
q.extend A.clone
q.extend AA.clone
puts q.bar

@MSNexploder
Copy link
Contributor

Works correctly in both - jruby 1.7.13 and master.

@kares kares closed this as completed Apr 8, 2016
@kares kares added this to the JRuby 1.7.13 milestone Apr 8, 2016
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
JRuby 1.7.13
Development

No branches or pull requests
3 participants
@headius @kares @MSNexploder