[jira] [Resolved] (GROOVY-7856) Adding CompileStatic via compiler config script to class with eachWithIndex results in exception in instruction selection phase

["Paul King (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-7856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King resolved GROOVY-7856.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 2.5.7
                   3.0.0-beta-1

Fix from Eric merged.

> Adding CompileStatic via compiler config script to class with eachWithIndex results in exception in instruction selection phase
> -------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: GROOVY-7856
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7856
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 2.4.7
>         Environment: Groovy Version: 2.4.7 JVM: 1.8.0_92 Vendor: Oracle Corporation OS: Linux
>            Reporter: Rick Venutolo
>            Assignee: Paul King
>            Priority: Minor
>             Fix For: 3.0.0-beta-1, 2.5.7
>
>
> I have run into an issue when adding the CompileStatic AST transformation to a class via the Groovy compiler configscript argument.
> {code:title=Demo.groovy|borderStyle=solid}
> class Demo {
>     void test() {
>         ['a', 'b'].eachWithIndex {String s, int i -> println "$i: $s"}
>     }
> }
> {code}
> {code:title=config.groovy|borderStyle=solid}
> import groovy.transform.CompileStatic
> import org.codehaus.groovy.ast.ClassNode
> withConfig(configuration) {
>     source(classValidator: {ClassNode classNode -> classNode.nameWithoutPackage == 'Demo'}) {
>         ast(CompileStatic)
>     }
> }
> {code}
> {code:title=Compile using --configscript|borderStyle=solid}
> $ groovyc --configscript config.groovy Demo.groovy
> {code}
> {code:title=Output (abbreviated)|borderStyle=solid}
> >>> a serious error occurred: BUG! exception in phase 'instruction selection' in source unit 'Demo.groovy' unexpected NullpointerException
> >>> stacktrace:
> BUG! exception in phase 'instruction selection' in source unit 'Demo.groovy' unexpected NullpointerException
>     at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1058)
>     at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
>     at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
>     ...
> Caused by: java.lang.NullPointerException
>     at org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:180)
>     at org.codehaus.groovy.control.ClassNodeResolver.findClassNode(ClassNodeResolver.java:170)
>     at org.codehaus.groovy.control.ClassNodeResolver.resolveName(ClassNodeResolver.java:126)
>   ...
> {code}
> *Notes*
> * Groovy & JVM versions: {{Groovy Version: 2.4.7 JVM: 1.8.0_92 Vendor: Oracle Corporation OS: Linux}}
> ** Have tried Groovy versions going back to 2.4.3 and Oracle JVM 1.7.0_79
> * Changing any of the following will result in no compilation error:
> ** Remove the {{source(classValidator: ...)}} code around {{ast}}, leaving {{ast(CompileStatic)}}, in the compiler config script
> ** Replace the {{eachWithIndex}} call in Demo with {{each}}
> ** Annotate {{Demo}} with {{@CompileStatic}} and compile without {{--configscript}}
> I have detailed and demoed the bug [here|https://github.com/rvenutolo/compilestatic-compiler-config] with some code you can clone and run.



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