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Posted to notifications@groovy.apache.org by "Eric Milles (JIRA)" <ji...@apache.org> on 2019/04/14 15:34:00 UTC
[jira] [Updated] (GROOVY-9079) STC: NPE in
StaticTypeCheckingVisitor.inferSAMTypeGenericsInAssignment
[ https://issues.apache.org/jira/browse/GROOVY-9079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Milles updated GROOVY-9079:
--------------------------------
Description:
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 "{ -> '' }".
was:
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 "{ -> }".
> 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
> Priority: Major
>
> 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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