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https://issues.apache.org/jira/browse/GROOVY-11013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-11013:
---------------------------------
Fix Version/s: 3.0.18
> Fail to substitute type when having SAM type with generics
> ----------------------------------------------------------
>
> Key: GROOVY-11013
> URL: https://issues.apache.org/jira/browse/GROOVY-11013
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Minor
> Fix For: 3.0.18, 4.0.13
>
>
> I have the following program
> {code}
> import java.util.*;
> @FunctionalInterface
> interface Foo<T> {
> int m(List<T> x);
> }
> class Main {
> static final void test() {
> Foo<String> p = (List<String> x) -> 1;
> }
> }
> {code}
> h3. Actual behavior
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Main.groovy: 11: [Static type checking] - Expected type java.util.List<T> for
> lambda parameter: x
> @ line 11, column 22.
> Foo<String> p = (List<String> x) -> 1;
> ^
> 1 error
> {code}
> h3. Expected behavior
> Compile successfully
> h3. Notes
> Tested against master (commit: cdc57551a7cce33ec7031b40753f25c869dcf0cc)
> Test case adapted from the following program that uses the
> apache-commons-collection4 lib
> {code}
> class Main {
> static final void test() {
> org.apache.commons.collections4.sequence.ReplacementsHandler<Number> f =
> (int x, List<java.io.IOException> y, List<Number> z) -> { } ;
> }
> }
> {code}
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