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  1. Groovy
  2. GROOVY-9506

Joint compilation is broken

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 2.5.10
    • Fix Version/s: 4.0.0-alpha-1, 3.0.4, 2.5.12
    • Component/s: None
    • Labels:
      None

      Description

      playground.groovy
      @groovy.transform.AutoImplement
      class C implements Runnable {}
      
      class Main {
          static void main(String[] args) {
              def c = new C()
              c.run()
          }
      }
      
      I.java
      public interface I {
        void foo();
      }
      
      $ groovyc I.java playground.groovy -j
      $ java -cp .:$GROOVY_HOME/lib/groovy-2.5.10.jar Main
      Exception in thread "main" java.lang.NullPointerException
      	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:37)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:119)
      	at Main.main(playground.groovy:9)
      

      What happens:
      1. org.codehaus.groovy.tools.javac.JavaStubGenerator#printClassContents applies its Verifier.
      2. org.codehaus.groovy.classgen.Verifier#addGroovyObjectInterfaceAndMethods adds GroovyObject interface and GroovyObject's methods via org.codehaus.groovy.classgen.Verifier#addMethod.
      3. Verifier#addMethod is overridden in #printClassContents' Verifier to skip adding methods to the class node.
      4. at the moment when @AutoImplement kicks in there exists the GroovyObject interface and no methods in the class node, so the transformation adds default method implementations.

      Related: https://youtrack.jetbrains.com/issue/IDEA-237148

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            • Assignee:
              paulk Paul King
              Reporter:
              daniilo Daniil Ovchinnikov
            • Votes:
              2 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: