[GROOVY-7420] Cannot choose between primitive and object variants of an overloaded method

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.3
• Fix Version/s: 2.4.6
• Component/s: Static Type Checker
• Labels: test
• Assignee: Pascal Schumacher
• Reporter: Frank Pavageau
• Created: 10/May/15 21:52
• Updated: 22/Feb/16 20:48
• Resolved: 16/Dec/15 21:55

Description

The static type checked cannot choose which variant of a overloaded method with both primitive and object parameters (e.g. long and Long) to use when the actual type of the parameter is the object type (e.g. Long):

class A {
    static String m(long p) {
        "primitive"
    }

    static String m(Long p) {
        "object"
    }
}

Long l = 42L
A.m(l)

yields the following compilation error:

[Static type checking] - Reference to method is ambiguous. Cannot choose between [java.lang.String A#m(java.lang.Long), java.lang.String A#m(long)]

The problem can be worked around by explicitely calling .longValue() on the Long.

Issue Links

• is duplicated by: GROOVY-7454 [Static type checking] - Reference to method is ambiguous