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https://issues.apache.org/jira/browse/GROOVY-10688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-10688:
---------------------------------
Fix Version/s: 4.0.5
(was: 5.0.0-alpha-1)
> LUB does not work properly when mixing type parameter names and using
> wildcards
> -------------------------------------------------------------------------------
>
> Key: GROOVY-10688
> URL: https://issues.apache.org/jira/browse/GROOVY-10688
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.5
>
>
> This might be related to GROOVY-10662.
> I have the following program
> {code}
> class A<T, X> {
> }
> class Test<T> {
> void test(A<Double, ? extends T> x) {
> A<Double, ? extends T> y = x;
> A<Double, ? extends T> z = (true) ? y : x;
> }
> }
> {code}
> h3. Actual behavior
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> test.groovy: 7: [Static type checking] - Incompatible generic argument types.
> Cannot assign A<java.lang.Double, java.lang.Object> to: A<java.lang.Double, ?
> extends T>
> @ line 7, column 32.
> A<Double, ? extends T> z = (true) ? y : x;
> ^
> 1 error
> {code}
> h3. Expected behavior
> Compile successfully
> *Notes*: The bug is triggered when the following conditions hold:
> * The name of the first type parameter of class A matches the type parameter
> of class Test.
> * We the wildcard type "? extends T" for instantiating the type constructor A
> on lines 5, 6, 7.
> Tested against master (commit: 1ea7b9619e7a3ec0da9a3e065f78e394206ea632)
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