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https://issues.apache.org/jira/browse/GROOVY-8732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King closed GROOVY-8732.
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> @CompileStatic refers to private field in parent class
> ------------------------------------------------------
>
> Key: GROOVY-8732
> URL: https://issues.apache.org/jira/browse/GROOVY-8732
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 2.4.15, 2.6.0-alpha-4, 3.0.0-alpha-3, 2.5.1
> Reporter: Lóránt Pintér
> Assignee: Paul King
> Priority: Major
> Fix For: 3.0.0-alpha-4, 2.5.2
>
>
> {code}
> import groovy.transform.CompileStatic
> @CompileStatic
> interface Thing {
> void call()
> }
> @CompileStatic
> class ThingImpl implements Thing {
> void call() {}
> }
> @CompileStatic
> class Parent {
> private final ThingImpl thing
> public Thing getThing() { null }
> }
> @CompileStatic
> class Child extends Parent {
> public void doSomething() {
> thing.call()
> }
> }
> {code}
> Compile via: {{groovyc Example.groovy}}.
> The line {{thing.call}} in {{Child.doSomething()}} calls {{getThing()}}, but
> then ends up referring to the returned value according to the private field's
> type from {{Parent}} ({{ThingImpl}}) instead of the actual returned type
> ({{Thing}}). The private field from {{Parent}} (or its type) should not be
> visible to {{Child}} at all.
> {code}
> public void doSomething();
> descriptor: ()V
> flags: (0x0001) ACC_PUBLIC
> Code:
> stack=1, locals=1, args_size=1
> 0: aload_0
> 1: invokevirtual #20 // Method
> Parent.getThing:()LThing;
> 4: checkcast #22 // class ThingImpl
> 7: invokevirtual #25 // Method ThingImpl.call:()V
> 10: aconst_null
> 11: pop
> 12: return
> {code}
> This is causing now problems for Gradle plugins compiled against Grade 4.9 or
> before trying to run on Gradle 4.9, because we've made a change to an
> internal type (`ProjectInternal`) that ended up being referred to via this
> bug in compiled and released code. See
> https://github.com/gradle/gradle/issues/6027
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