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https://issues.apache.org/jira/browse/GROOVY-8427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16307030#comment-16307030
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Paul King commented on GROOVY-8427:
-----------------------------------
Looks weird to me. You can also get the compiler to behave by returning String
from your Closure, e.g.:
{code}
def c = {
int x = 0 // with or without is fine
foo('') {
println 'hello'
''
}
}
{code}
> Issue With Static Compiler And Generics
> ---------------------------------------
>
> Key: GROOVY-8427
> URL: https://issues.apache.org/jira/browse/GROOVY-8427
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 2.4.13
> Reporter: Jeff Scott Brown
>
> This code will compile:
> {code:title=src/main/groovy/demo/Bar.groovy|borderStyle=solid}
> package demo
> import java.util.function.Consumer
> import groovy.transform.CompileStatic
> @CompileStatic
> class Bar {
> static <T> void foo(T a, Consumer<T> c) { }
> static void main(args) {
> def c = {
> foo('') {
> println 'hello'
> }
> }
> }
> }
> {code}
> This code will not compile:
> {code:title=src/main/groovy/demo/Bar.groovy|borderStyle=solid}
> package demo
> import java.util.function.Consumer
> import groovy.transform.CompileStatic
> @CompileStatic
> class Bar {
> static <T> void foo(T a, Consumer<T> c) { }
> static void main(args) {
> def c = {
> // this following line is the only difference
> int x = 0
> foo('') {
> println 'hello'
> }
> }
> }
> }
> {code}
> {noformat}
> /Users/jeffbrown/projects/project/src/main/groovy/demo/Bar.groovy: 14:
> [Static type checking] - Cannot call <T> demo.Bar#foo(T,
> java.util.function.Consumer <T>) with arguments [java.lang.String,
> groovy.lang.Closure <java.lang.Void>]
> @ line 14, column 13.
> foo('') {
> ^
> 1 error
> {noformat}
> I have only tested with Groovy 2.4.13.
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