[GROOVY-10711] CompileStatic doesn't call asBoolean

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.18, 3.0.12, 4.0.4
• Fix Version/s: 4.0.5, 2.5.19, 3.0.13
• Component/s: Static compilation
• Assignee: Eric Milles
• Reporter: Christopher Smith
• Created: 29/Jul/22 18:23
• Updated: 10/Feb/23 21:40
• Resolved: 29/Jul/22 19:49

Description

This appears to be a duplicate of GROOVY-7807, but the test cases presented don't quite cover the behavior I see. I have a custom record class

@Immutable
@CompileStatic
@POJO
static class Result {
  String channel
  String thread

  boolean asBoolean() {
    println 'in asBoolean'
    false // for debugging
  }
}

When I call this from another class that is also statically compiled, the asBoolean method is not called.

if (!result) { // console prints diagnostic
  throw new NoChannelException() // block is not entered
}

        12: invokeinterface #136,  3          // load the Result
        17: astore_2
        18: aload_2
        19: pop
        20: aload_2
        21: dup
        22: ifnonnull     30
        25: pop
        26: iconst_0
        27: goto          32
        30: pop
        31: iconst_1
        32: ifne          39
        35: iconst_1
        36: goto          40
        39: iconst_0
        40: ifeq          58
        43: new           #138                // class NoChannelException

Both classes are in the same compilation unit, which may be relevant to the behavior, as @CompileStatic seems to correctly pull in {{asBoolean}}s from library code and extension method. However, in this case it's quite clearly disregarding the custom method and relying solely on a null check.