[GROOVY-7402] Compiler NPE Related To AST Transformations And Traits

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.3
• Fix Version/s: 2.4.10
• Component/s: Compiler
• Assignee: Paul King
• Reporter: Jeff Scott Brown
• Created: 25/Apr/15 06:08
• Updated: 18/Mar/17 09:56
• Resolved: 01/Mar/17 13:14

Description

Related to https://github.com/grails/grails-core/issues/663.

The attached traitannotation.zip includes the following:

src/main/groovy/demo/SomeTrait.groovy

package demo

import groovy.transform.*

@Immutable
trait SomeTrait {
    String name
}

src/main/groovy/demo/SomeClass.groovy

package demo

class SomeClass implements SomeTrait {}

Compilation raises an NPE:

$ ./gradlew clean cG
:clean
:compileJava UP-TO-DATE
:compileGroovy FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileGroovy'.
> BUG! exception in phase 'instruction selection' in source unit '/Users/jeff/traitannotation/src/main/groovy/demo/SomeTrait.groovy' unexpected NullpointerException

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Issue Links

• links to: GitHub Pull Request #499