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https://issues.apache.org/jira/browse/GROOVY-7748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15131969#comment-15131969
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Jochen Theodorou commented on GROOVY-7748:
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The error message is {code}[Static type checking] - Incompatible generic
argument types. Cannot assign Function <A, groovy.lang.Closure> to: Function
<A, B>{code}
> SAM & @CompileStatic failure
> ----------------------------
>
> Key: GROOVY-7748
> URL: https://issues.apache.org/jira/browse/GROOVY-7748
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Maxim Medvedev
>
> Groovyc fails to compile SAM coercion used in variable declaration
> {code}
> interface Function<D, I> {
> I fun(D dom)
> }
> class A{}; class B{}
> @CompileStatic
> void sample() {
> Function<A, B> f = {A dom -> return new B() } //compilation fails here
> }
> void bar(Function<A, B> fun) {}
> @CompileStatic
> void sample2() {
> bar {A dom -> return new B() } //compiles & runs ok
> }
> {code}
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