[jira] [Created] (GROOVY-10056) Inferred parameter type of lambda expression for multi-dimensions array is not correct

[Daniel Sun (Jira)]

Daniel Sun created GROOVY-10056:
-----------------------------------

             Summary: Inferred parameter type of lambda expression for 
multi-dimensions array is not correct
                 Key: GROOVY-10056
                 URL: https://issues.apache.org/jira/browse/GROOVY-10056
             Project: Groovy
          Issue Type: Bug
          Components: Static compilation, Static Type Checker
            Reporter: Daniel Sun


The type of {{strs}} is inferred as {{String}}, but its type should be 
{{String[]}}

{code:java}
@groovy.transform.CompileStatic
def test() {
    String[][] strsArray = new String[][] {
        new String[] {'a', 'b', 'c'},
        new String[] {'d', 'e', 'f'}
    }
    Arrays.stream(strsArray)
                .limit(1)
                .forEach(strs -> {
                    assert ['a', 'b', 'c'] == Arrays.asList(strs)
                })
}
test()
{code}

*Error message*
{code:java}
java.lang.ClassCastException: class [Ljava.lang.String; cannot be cast to class 
java.lang.String ([Ljava.lang.String; and java.lang.String are in module 
java.base of loader 'bootstrap')

        at 
java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)

        at java.base/java.util.stream.SliceOps$1$1.accept(SliceOps.java:199)

        at 
java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)

        at 
java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127)

        at 
java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502)

        at 
java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488)

        at 
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)

        at 
java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)

        at 
java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)

        at 
java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)

        at 
java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)

        at ConsoleScript3.test(ConsoleScript3:7)

        at 
org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:318)

        at ConsoleScript3.run(ConsoleScript3:13)

        at 
groovy.lang.GroovyShell.runScriptOrMainOrTestOrRunnable(GroovyShell.java:257)

        at groovy.lang.GroovyShell.run(GroovyShell.java:363)

        at groovy.lang.GroovyShell.run(GroovyShell.java:342)

        at groovy.lang.GroovyShell.run(GroovyShell.java:168)

        at groovy.console.ui.Console$GroovySourceType.run(Console.groovy:1177)

        at groovy.console.ui.Console.doRun(Console.groovy:1408)

        at jdk.internal.reflect.GeneratedMethodAccessor81.invoke(Unknown Source)

        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.base/java.lang.reflect.Method.invoke(Method.java:566)

        at 
org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:112)

        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)

        at 
org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:331)

        at 
org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:63)

        at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:203)

        at 
groovy.console.ui.Console$_runScriptImpl_closure23.doCall(Console.groovy:1372)

        at 
groovy.console.ui.Console$_runScriptImpl_closure23.doCall(Console.groovy)

        at jdk.internal.reflect.GeneratedMethodAccessor78.invoke(Unknown Source)

        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.base/java.lang.reflect.Method.invoke(Method.java:566)

        at 
org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:112)

        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)

        at 
org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:268)

        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1034)

        at groovy.lang.Closure.call(Closure.java:419)

        at groovy.lang.Closure.call(Closure.java:413)

        at groovy.lang.Closure.run(Closure.java:501)

        at java.base/java.lang.Thread.run(Thread.java:834)
{code}




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