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https://issues.apache.org/jira/browse/GROOVY-9079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King resolved GROOVY-9079.
-------------------------------
Resolution: Fixed
Assignee: Paul King
Fix Version/s: 2.5.7
3.0.0-beta-1
Fixed. Thanks.
> STC: NPE in StaticTypeCheckingVisitor.inferSAMTypeGenericsInAssignment
> ----------------------------------------------------------------------
>
> Key: GROOVY-9079
> URL: https://issues.apache.org/jira/browse/GROOVY-9079
> Project: Groovy
> Issue Type: Bug
> Reporter: Eric Milles
> Assignee: Paul King
> Priority: Major
> Fix For: 3.0.0-beta-1, 2.5.7
>
>
> Consider the following:
> {code:groovy}
> @groovy.transform.CompileStatic
> void meth() {
> java.util.concurrent.Callable<String> call = { -> '' }
> }
> {code}
> This code produces:
> {code}
> BUG! exception in phase 'instruction selection' in source unit 'Blah.groovy'
> unexpected NullpointerException
> at
> org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1148)
> at
> org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:654)
> at
> org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:632)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:609)
> ...
> Caused by: java.lang.NullPointerException
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.inferSAMTypeGenericsInAssignment(StaticTypeCheckingVisitor.java:4282)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.getResultType(StaticTypeCheckingVisitor.java:4133)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitBinaryExpression(StaticTypeCheckingVisitor.java:831)
> ...
> {code}
> The method in StaticTypeCheckingVisitor calls
> ClosureExpression.getParameters(), which returns null for a closure
> expression like "{ -> '' }".
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