[GROOVY-9009] AutoClone throws ClassCastException when used with @ToString or @EqualsAndHashCode

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.5
• Fix Version/s: 3.0.0-beta-1, 2.5.7
• Assignee: Paul King
• Reporter: Amin Ziaei
• Created: 22/Feb/19 19:57
• Updated: 20/May/19 07:31
• Resolved: 25/Feb/19 06:17

Description

Let’s say I have the following class:

@ToString(includes = 'someId')
@CompileStatic
@AutoClone
class SomeClass {
  String someId
}

When I call clone, I get the following exception:

org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'com.some.package.SomeClass(null)' with class 'com.some.package.SomeClass' to class 'java.lang.StringBuilder'

When I look at the decompiled .class file in Intellij, I see the following clone method has been generated:

@Generated
public SomeClass clone() throws CloneNotSupportedException {
  StringBuilder _result = (StringBuilder)ScriptBytecodeAdapter.castToType((SomeClass)ScriptBytecodeAdapter.castToType(super.clone(), SomeClass.class), StringBuilder.class);
  return (SomeClass)ScriptBytecodeAdapter.castToType(_result, SomeClass.class);
}

The issue is not reproducible if I remove the @ToString on the class.

Issue Links

• links to: GitHub Pull Request #883