[GROOVY-8905] MissingMethodException when private method is called on parent class in a closure

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.6.0-alpha-4, 3.0.0-alpha-3, 2.5.4
• Component/s: class generator
• Assignee: Unassigned
• Reporter: Caleb Ott
• Created: 27/Nov/18 20:46
• Updated: 08/Mar/22 12:16
• Resolved: 05/Feb/22 17:40

Description

This appears to be a bug since a MissingMethodException is being thrown when it shouldn't be.

Here is the simplified code to reproduce the issue. I've tested on 2.5.4/2.6.0-alpha-4/3.0.0-alpha-3.

class Parent {
 protected void doSomethingParent() {
 // calling it outside of the closure works fine
 theSomething(1_000, 'This works')

 // setup a closure that calls another private method in the parent
 Closure closure = { int num ->
 // calling it inside the closure breaks
 theSomething(num, 'this breaks')
 }

 closure(10)
 }

 // only breaks because it is "private"
 private void theSomething(int num, String someValue) {
 println "${num} = ${someValue}"
 }
}

class Child extends Parent {
 void doSomethingChild() {
 // just calls the parent method
 doSomethingParent()
 }
}

// run the test
def test = new Child()
test.doSomethingChild()

Output:

1000 = This works
Caught: groovy.lang.MissingMethodException: No signature of method: Child.theSomething() is applicable for argument types: (Integer, String) values: [10, this breaks]
groovy.lang.MissingMethodException: No signature of method: Child.theSomething() is applicable for argument types: (Integer, String) values: [10, this breaks]
 at Parent$_doSomethingParent_closure1.doCall(ScratchPad.groovy:10)
 at Parent.doSomethingParent(ScratchPad.groovy:13)
 at Child.doSomethingChild(ScratchPad.groovy:25)
 at Child$doSomethingChild.call(Unknown Source)
 at ScratchPad.run(ScratchPad.groovy:31)

 

 

Issue Links

• is related to: GROOVY-2433 Closure in base class unable to call private methods when invoked from derived class