[jira] [Updated] (GROOVY-9342) SC: Lambda in static initializer that uses static field on LHS of += produces errors

["Eric Milles (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-9342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles updated GROOVY-9342:
--------------------------------
    Summary: SC: Lambda in static initializer that uses static field on LHS of += produces errors  (was: SC: Lambda in static initializer that uses field on LHS of += produces error)

> SC: Lambda in static initializer that uses static field on LHS of += produces errors
> ------------------------------------------------------------------------------------
>
>                 Key: GROOVY-9342
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9342
>             Project: Groovy
>          Issue Type: Bug
>            Reporter: Eric Milles
>            Priority: Major
>
> Follow up to GROOVY-9332 and GROOVY-9333.  Consider the following:
> {code:groovy}
> @groovy.transform.CompileStatic
> class Test1 {
>     static int acc = 1
>     static { [1, 2, 3].forEach(e -> acc += e) }
> }
> assert Test1.acc == 7
> {code}
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
>     TestScript60.groovy: 5: [Static type checking] - Cannot find matching method int#plus(java.lang.Object). Please check if the declared type is correct and if the method exists.
>      @ line 5, column 49.
>        atic { [1, 2, 3].forEach(e -> acc += e)
>                                      ^
>     1 error
>         at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:287)
>         at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1091)
>         at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:633)
>         at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:612)
>         at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:589)
>         at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:367)
>         at groovy.lang.GroovyClassLoader.lambda$parseClass$2(GroovyClassLoader.java:310)
>         ...
> {code}
> and a different error if lambda uses specific parameter type:
> {code:groovy}
> @groovy.transform.CompileStatic
> class Test1 {
>     static int acc = 1
>     static { [1, 2, 3].forEach((Integer i) -> acc += i) }
> }
> assert Test1.acc == 7
> {code}
> {code}
> java.lang.ExceptionInInitializerError\r\n
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\r\n
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\r\n
> 	at java.lang.reflect.Method.invoke(Method.java:498)\r\n
> {code}



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