[GROOVY-11284] Generated size() method on records performs unnecessary boxing

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.0.17
• Fix Version/s: 4.0.19, 5.0.0-alpha-6

Language

groovy

• Assignee: Paul King
• Reporter: Oscar N
• Created: 17/Jan/24 17:25
• Updated: 05/Mar/24 01:53
• Resolved: 19/Jan/24 21:47

Description

I have the following code:

import groovy.transform.CompileStatic

@CompileStatic
static void main(String[] args) {
    println(new Person("John", 42).size())
}

@CompileStatic
record Person(String name, int age) {} 

When checking the compiled output, the size method performs unnecessary boxing:

@Generated
public final int size() {
    return Integer.valueOf(2);
}

// access flags 0x11
public final size()I
@Lgroovy/transform/Generated;()
 L0
  ICONST_2
  INVOKESTATIC java/lang/Integer.valueOf (I)Ljava/lang/Integer;
  INVOKEVIRTUAL java/lang/Integer.intValue ()I
  IRETURN
 L1
  LOCALVARIABLE this Lorg/example/Person; L0 L1 0
  MAXSTACK = 1
  MAXLOCALS = 1