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https://issues.apache.org/jira/browse/GROOVY-11375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles resolved GROOVY-11375.
----------------------------------
    Fix Version/s: 5.0.0-alpha-9
       Resolution: Fixed

https://github.com/apache/groovy/commit/fb954ba5424facdd89ddfcb4ee08b733b019a1d8

> Power binary expression finds incorrect type - currently uses declaration 
> inferred type
> ---------------------------------------------------------------------------------------
>
>                 Key: GROOVY-11375
>                 URL: https://issues.apache.org/jira/browse/GROOVY-11375
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 5.0.0-alpha-8, 4.0.21
>            Reporter: Paul King
>            Assignee: Eric Milles
>            Priority: Major
>              Labels: CompileStatic
>             Fix For: 5.0.0-alpha-9
>
>
> For this code:
> {code}
> @groovy.transform.CompileStatic
> def method() {
>     var temp = 'foo'
>     temp = temp.size()
>     assert temp ** temp == 27
> }
> method()
> {code}
> The compiler gives this error:
> {noformat}
> BUG! exception in phase 'class generation' in source unit 'ConsoleScript3' At 
> line 10 column 8
> On receiver: temp with message: power and arguments: temp
> This method should not have been called. Please try to create a simple 
> example reproducing
> this error and file a bug report at 
> https://issues.apache.org/jira/browse/GROOVY
>       at 
> org.codehaus.groovy.classgen.asm.sc.StaticTypesCallSiteWriter.makeSingleArgumentCall(StaticTypesCallSiteWriter.java:582)
>       at 
> org.codehaus.groovy.classgen.asm.InvocationWriter.makeSingleArgumentCall(InvocationWriter.java:626)
>       at 
> org.codehaus.groovy.classgen.asm.BinaryExpressionHelper.evaluateBinaryExpression(BinaryExpressionHelper.java:602)
>       at 
> org.codehaus.groovy.classgen.asm.BinaryExpressionMultiTypeDispatcher.evaluateBinaryExpression(BinaryExpressionMultiTypeDispatcher.java:242)
>       at 
> org.codehaus.groovy.classgen.asm.BinaryExpressionHelper.eval(BinaryExpressionHelper.java:264)
>       at 
> org.codehaus.groovy.classgen.AsmClassGenerator.visitBinaryExpression(AsmClassGenerator.java:849)
> ...
> {noformat}
> We apply flow typing for the receiver but not the argument type. This looks 
> like a case that should be handled where we currently have "TODO: more cases 
> ..." in StaticTypesCallSiteWriter.
> The same situation occurs for the shift operators and plus etc., e.g.:
> {code}
> assert temp << temp == 24
> assert temp + temp == 6
> {code}



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