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https://issues.apache.org/jira/browse/GROOVY-11899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18070930#comment-18070930
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Paul King edited comment on GROOVY-11899 at 4/3/26 10:06 PM:
-------------------------------------------------------------
Claude's analysis:
{quote}The Fix (in Groovy compiler)
The stub generator (in the Groovy compiler source, likely in
JavaStubGenerator or similar) needs to either:
1. Add a dummy body to static methods in trait stubs, e.g.:
static java.lang.String getMessage() \{ return null; }
2. Omit static methods from trait stubs entirely, since they live on the
trait's helper class (TraitWithStaticMethods$Trait$Helper) at runtime, not on
the
interface itself.
Option 2 is arguably more correct — Groovy trait static methods aren't really
Java interface static methods; they're implemented on a companion helper class.
{quote}
Option 2 also looks correct to me conceptually, but then that might break trait
usage.
was (Author: paulk):
Claude's analysis:
{quote}The Fix (in Groovy compiler)
The stub generator (in the Groovy compiler source, likely in
JavaStubGenerator or similar) needs to either:
1. Add a dummy body to static methods in trait stubs, e.g.:
static java.lang.String getMessage() \{ return null; }
2. Omit static methods from trait stubs entirely, since they live on the
trait's helper class (TraitWithStaticMethods$Trait$Helper) at runtime, not on
the
interface itself.
Option 2 is arguably more correct — Groovy trait static methods aren't really
Java interface static methods; they're implemented on a companion helper class.
{quote}
Option 2 also looks correct to me.
> Static methods in Traits do not compile in Java/Groovy joint compiliation
> -------------------------------------------------------------------------
>
> Key: GROOVY-11899
> URL: https://issues.apache.org/jira/browse/GROOVY-11899
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 5.0.0
> Reporter: Mattias Reichel
> Priority: Major
>
> Compilation fails in Java/Groovy joint compilation builds where a Java class
> references a Trait that has static methods.
> Reproducer:
> {code:java}
> git clone https://github.com/matrei/groovy-5-trait-joint-comp-issue.git
> ./gradlew build{code}
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