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https://issues.apache.org/jira/browse/GROOVY-8555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-8555.
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> The private keyword of an instance variable is causing a behavior change in a
> map class
> ---------------------------------------------------------------------------------------
>
> Key: GROOVY-8555
> URL: https://issues.apache.org/jira/browse/GROOVY-8555
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.12
> Reporter: Howard
> Priority: Major
> Fix For: 5.0.0-alpha-1
>
>
> h1. Problem: Adding the private keyword causes a difference in behavior when
> using the dot operator
> Consider the following 2 scripts with the same class (1 with the instance
> variable declared as private with everything else being the same)
> h2. Script 1:
> {code:java}
> import java.util.concurrent.ConcurrentHashMap
> import groovy.transform.CompileStatic
> class mymap<K,V> extends ConcurrentHashMap<K,V>{
> private String a = 'a';
> def cloned(){
> def clone = new mymap<K,V>()
> clone.putAll(this)
> clone.a = this.a
> return clone
> }
> }
> def mm = new mymap<String, String>()
> def fieldA = mymap.class.getDeclaredField("a")
> fieldA.setAccessible(true)
> mm.b = 'b'
> def cloned = mm.cloned()
> println(cloned.a)
> println(fieldA.get(cloned))
> println(cloned)
> {code}
> h2. Output:
> {code}
> a
> a
> [a:a, b:b]
> {code}
> h2. Script 2:
> {code}
> import java.util.concurrent.ConcurrentHashMap
> import groovy.transform.CompileStatic
> class mymap<K,V> extends ConcurrentHashMap<K,V>{
> String a = 'a';
> def cloned(){
> def clone = new mymap<K,V>()
> clone.putAll(this)
> clone.a = this.a
> return clone
> }
> }
> def mm = new mymap<String, String>()
> def fieldA = mymap.class.getDeclaredField("a")
> fieldA.setAccessible(true)
> mm.b = 'b'
> def cloned = mm.cloned()
> println(cloned.a)
> println(fieldA.get(cloned))
> println(cloned)
> {code}
> h2. Output:
> {code}
> null
> a
> [b:b]
> {code}
> h1. Expectation
> Adding the 'private' keyword in front of the instance variable should not
> change the output of these 2 scripts
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