[GROOVY-6431] method resolution with parameter BigInteger fails for argument extending BigInteger

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.7, 2.1.9, 2.2.0-rc-3
• Fix Version/s: 2.2.1
• Assignee: Jochen Theodorou
• Reporter: Mike Hoolehan
• Created: 14/Nov/13 02:06
• Updated: 15/Oct/15 18:19
• Resolved: 18/Nov/13 05:55

Description

When extending java.lang.BigInteger, using an obj of that child class as argument to a method with BigInteger parameter causes a MissingMethodException. Similar variations with BigDecimal or Number work fine.

Sample:

public class MyDecimal extends java.math.BigDecimal {
    public MyDecimal(String s) {super(s);}
}

public class MyInteger extends java.math.BigInteger {
    public MyInteger(String s) {super(s);}
}

class Expression {
    public int takeNumber(Number a) {return 1;}
    public int takeBigDecimal(BigDecimal a) {return 2;}
    public int takeBigInteger(BigInteger a) {return 3;}
}

Expression exp = new Expression();
assert 1 == exp.takeNumber(new MyInteger("3")); //works fine: 1
assert 2 == exp.takeBigDecimal(new MyDecimal("3.0")); //works fine: 2 
assert 3 == exp.takeBigInteger(new MyInteger("3")); //MissingMethodException