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Date: Mon, 1 Jun 2015 07:43:17 +0000 (UTC)
From: =?utf-8?Q?C=C3=A9dric_Champeau_=28JIRA=29?= <jira@apache.org>
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Message-ID: <JIRA.12823965.1429942130000.80734.1433144597120@Atlassian.JIRA>
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Subject: [jira] [Commented] (GROOVY-7402) Compiler NPE Related To AST
 Transformations And Traits
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    [ https://issues.apache.org/jira/browse/GROOVY-7402?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D145=
67031#comment-14567031 ]=20

C=C3=A9dric Champeau commented on GROOVY-7402:
-----------------------------------------

It's interesting to know it worked in a previous version of Groovy. I'm not=
 sure we can improve the error message in a short timeframe (because errors=
 thrown from AST xforms are hard to catch), but if it used to work, there's=
 certainly something we can do.

> Compiler NPE Related To AST Transformations And Traits
> ------------------------------------------------------
>
>                 Key: GROOVY-7402
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7402
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 2.4.3
>            Reporter: Jeff Scott Brown
>         Attachments: traitannotation.zip
>
>
> Related to https://github.com/grails/grails-core/issues/663.
> The attached traitannotation.zip includes the following:
> {code:title=3Dsrc/main/groovy/demo/SomeTrait.groovy|borderStyle=3Dsolid}
> package demo
> import groovy.transform.*
> @Immutable
> trait SomeTrait {
>     String name
> }
> {code}
> {code:title=3Dsrc/main/groovy/demo/SomeClass.groovy|borderStyle=3Dsolid}
> package demo
> class SomeClass implements SomeTrait {}
> {code}
> Compilation raises an NPE:
> {noformat}
> $ ./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 Null=
pointerException
> * Try:
> Run with --stacktrace option to get the stack trace. Run with --info or -=
-debug option to get more log output.
> BUILD FAILED
> {noformat}


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