[GROOVY-5175] Calling a method with a null argument's value when the parameter is an array

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0-beta-1
• Fix Version/s: 2.0-beta-2
• Component/s: Static Type Checker
• Assignee: Cédric Champeau
• Reporter: Valery Shyshkin
• Created: 08/Dec/11 06:07
• Updated: 24/Dec/11 03:08
• Resolved: 08/Dec/11 08:58

Description

STC Error when calling a method with an argument of null when the parameter is an array

Null parameter with array argument

import groovy.transform.*

@TypeChecked 
class Foo {
    def say() {
        methodWithArrayParam(null) // STC Error
    }
    def methodWithArrayParam(String[] s) {
        
    }
}

Other cases tested too:

Simple method call with null argument

class Foo {
    def say() {
        methodWithArrayParam(null)
    }

    def methodWithArrayParam(Date date) {

    }
}

Multiple parameters where one of them is null

class Foo {
    def say() {
        methodWithArrayParam(null, new Date())
    }
    def methodWithArrayParam(Date date1, Date date2) {

    }
}

Ambiguous method call due to null parameters

class Foo {
    def say() {
        methodWithArrayParam(null, new Date())
    }
    def methodWithArrayParam(Date date1, Date date2) {

    }
    def methodWithArrayParam(String o, Date date2) {

    }
}

Disambiguated method call

class Foo {
    def say() {
        methodWithArrayParam((Date)null, new Date())
    }
    def methodWithArrayParam(Date date1, Date date2) {

    }
    def methodWithArrayParam(String o, Date date2) {

    }
}