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https://issues.apache.org/jira/browse/GROOVY-10270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King closed GROOVY-10270.
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> Cannot initialize parameterized class with lambda without cast
> --------------------------------------------------------------
>
> Key: GROOVY-10270
> URL: https://issues.apache.org/jira/browse/GROOVY-10270
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation, Static Type Checker
> Affects Versions: 4.0.0-alpha-3, 4.0.0-beta-1, 3.0.9
> Reporter: Stefanos Chaliasos
> Assignee: Eric Milles
> Priority: Major
> Fix For: 2.5.22, 3.0.17, 4.0.11
>
>
> I have the following Groovy program.
> {code:groovy}
> import java.util.function.Function;
> @groovy.transform.TypeChecked
> class Main {
> static final void foo(Function<Short, Byte> x) {}
> public static final void main() {
> foo({Short y -> (Byte) y}) // works
> Cls cls = new Cls({Short y -> (Byte) y}) // works
> PCls<Function<Short, Byte>> pcls1 = new PCls<Function<Short,
> Byte>>({Short y -> (Byte) y} as Function<Short, Byte>) // works
> PCls<Function<Short, Byte>> pcls2 = new PCls<Function<Short,
> Byte>>({Short y -> (Byte) y}) // fails
> }
> }
> class Cls {
> public Function<Short, Byte> f
> public Cls(Function<Short, Byte> f) {
> this.f = f
> }
> }
> class PCls <T> {
> public T f
> public PCls(T f) {
> this.f = f
> }
> }
> {code}
> h2. Actual Behavior
> The program does not compile, and I get the following error.
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Main.groovy: 14: [Static type checking] - Cannot call
> PCls#<init>(java.util.function.Function<java.lang.Short, java.lang.Byte>)
> with arguments [groovy.lang.Closure]
> @ line 14, column 41.
> unction<Short, Byte>> pcls2 = new PCls<F
> ^
> 1 error
> {code}
> h2. Expected Behavior
> Compile successfully.
> h2. Comment
> Tested against 4-beta-1, 4-alpha-3, 3.0.9, and master (commit:
> b26dbbeabe1e3d27d30c936701b1a571e24d5ab2). Maybe similar to GROOVY-10254, but
> with parameterized class.
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