[GROOVY-8495] GroovyObject method implementations are marked with ACC_SYNTHETIC

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-4
• Component/s: bytecode, class generator, Compiler
• Assignee: Paul King
• Reporter: Daniil Ovchinnikov
• Created: 07/Mar/18 07:46
• Updated: 16/Jan/19 12:08
• Resolved: 11/Oct/18 04:00

Description

class GroovyClass {}

javap -v (stripped)

...
public class com.example.groovylib.GroovyClass implements groovy.lang.GroovyObject
  flags: ACC_PUBLIC, ACC_SUPER
...
{
  public static transient boolean __$stMC;
    descriptor: Z
    flags: ACC_PUBLIC, ACC_STATIC, ACC_TRANSIENT, ACC_SYNTHETIC

  public com.example.groovylib.GroovyClass();
    descriptor: ()V
    flags: ACC_PUBLIC

  protected groovy.lang.MetaClass $getStaticMetaClass();
    descriptor: ()Lgroovy/lang/MetaClass;
    flags: ACC_PROTECTED, ACC_SYNTHETIC

  public groovy.lang.MetaClass getMetaClass();
    descriptor: ()Lgroovy/lang/MetaClass;
    flags: ACC_PUBLIC, ACC_SYNTHETIC

  public void setMetaClass(groovy.lang.MetaClass);
    descriptor: (Lgroovy/lang/MetaClass;)V
    flags: ACC_PUBLIC, ACC_SYNTHETIC
    
  public java.lang.Object invokeMethod(java.lang.String, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
    flags: ACC_PUBLIC, ACC_SYNTHETIC
    
  public java.lang.Object getProperty(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/Object;
    flags: ACC_PUBLIC, ACC_SYNTHETIC

  public void setProperty(java.lang.String, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;)V
    flags: ACC_PUBLIC, ACC_SYNTHETIC
}
SourceFile: "GroovyClass.groovy"

Issue Links

• causes: GROOVY-7362 Can't compile Java class extending Groovy abstract class with explicit GroovyObject interface
• causes: GROOVY-8496 Can't call default getProperty() implementation from Java subclass
• causes: GROOVY-8497 Can't call getProperty() from Java
• depends upon: GROOVY-4346 Set isSynthetic()/setSynthetic() behaviour right for AST nodes
• relates to: GROOVY-3877 problem trying to extend an abstract groovy class with a java class
• relates to: GROOVY-3318 Javac doesn't see synthetic Groovy methods in Groovy-compiled superclass