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https://issues.apache.org/jira/browse/GROOVY-9244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16943771#comment-16943771
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Eric Milles commented on GROOVY-9244:
-------------------------------------
Here is the bytecode for the anon. inner constructor in case that helps anyone
understand what might be changed:
{code}
// Method descriptor #13 (LScript;Ljava/lang/Object;)V
// Stack: 5, Locals: 4
synthetic Script$1(Script p0, java.lang.Object p10);
0 aload_1 [p0]
1 astore_3
2 aload_3
3 aload_0 [this]
4 swap
5 putfield Script$1.this$0 : Script [17]
8 aload_3
9 pop
10 iconst_1
11 anewarray java.lang.Object [19]
14 dup
15 iconst_0
16 aload_2 [p10]
17 aastore
18 dup
19 bipush -1
21 ldc <Class Groovy3> [4]
23 invokestatic
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.selectConstructorAndTransformArguments(java.lang.Object[],
int, java.lang.Class) : int [25]
{code}
> Anonymous subclasses should cast their super-parameters
> -------------------------------------------------------
>
> Key: GROOVY-9244
> URL: https://issues.apache.org/jira/browse/GROOVY-9244
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.7, 2.5.7
> Environment: I tried in GroovyConsole 2.4.7 and Groovy web console
> 2.5.7
> Reporter: Björn Kautler
> Priority: Major
>
> Given this code:
> {noformat}
> import java.util.regex.Pattern
> abstract class Groovy3 {
> Groovy3(String s) { println "String" }
> Groovy3(Pattern p) { println "Pattern" }
> }
> class Groovy4 extends Groovy3 {
> Groovy4(String s) { super(s) }
> Groovy4(Pattern p) { super(p) }
> }
> class Groovy5 extends Groovy3 {
> Groovy5(String s) { super(s as String) }
> Groovy5(Pattern p) { super(p as Pattern) }
> }
> class Groovy6 {
> Groovy6(String s) { println "String" }
> Groovy6(Pattern p) { println "Pattern" }
> }
> new Groovy3(null as String) { }
> new Groovy4(null as String)
> new Groovy5(null as String)
> new Groovy6(null as String)
> {noformat}
> Groovy3ish and Groovy4 instantiation fail
> Groovy5 and Groovy6 instantiation succeed and print {{String}}.
> I did not find a way to make the Groovy3ish one work, except for doing it the
> Groovy4 way, but no chance with an anonymous subclass.
> From what I observed, I guess the anonymous subclass does it like Groovy4 but
> should do it like Groovy5 to properly select the super constructor.
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