[GROOVY-11006] CompileStatic: cannot implicitly call double setter with BigDecimal literal

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.17
• Fix Version/s: 3.0.20
• Component/s: Compiler
• Assignee: Eric Milles
• Reporter: Jason Garrett
• Created: 07/Apr/23 21:26
• Updated: 22/Dec/23 11:38
• Resolved: 02/Nov/23 19:53

Description

When a class declares a double property and setter for it:

class DoubleWithSetter {
    protected double myDouble

    void setMyDouble(double val) {
       this.myDouble = val
    }
} 

A statically-compiled subclass cannot "assign" a BigDecimal literal to that property:

import groovy.transform.CompileStatic

@CompileStatic
class BigDecimalImplicitDoubleSetter extends DoubleWithSetter {
    void doStuff() {
       double doubleVar = 0.0 // works
       myDouble = doubleVar   // works
       myDouble = 0.0         // [Static type checking] - Cannot assign value of type java.math.BigDecimal to variable of type double
    }
}