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https://issues.apache.org/jira/browse/GROOVY-9934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Thodoris Sotiropoulos updated GROOVY-9934:
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Description:
I have the following Groovy program
{code:java}
class Bar {}
class Foo<T extends Bar> {
public T method(T x) {
def bar = {x}
return bar()
}
}
{code}
h3. Actual Behavior
The compiler raise the following compile-time error
{code:java}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Main.groovy: 6: [Static type checking] - Cannot return value of type
java.lang.Object on method returning type T
@ line 6, column 12.
return bar()
^1 error
{code}
h3. Expected Behavior
Compile successfully. Notably, when I remove the "extends" keyword from the
type parameter, the code type checks as expected.
was:
I have the following Groovy program
{code:java}
class Bar {}class Foo<T extends Bar> {
public T method(T x) {
def bar = {x}
return bar()
}
}
{code}
h3. Actual Behavior
The compiler raise the following compile-time error
{code:java}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Main.groovy: 6: [Static type checking] - Cannot return value of type
java.lang.Object on method returning type T
@ line 6, column 12.
return bar()
^1 error
{code}
h3. Expected Behavior
Compile successfully. Notably, when I remove the "extends" keyword from the
type parameter, the code type checks as expected.
> Bounded type parameter is not captured by closure
> -------------------------------------------------
>
> Key: GROOVY-9934
> URL: https://issues.apache.org/jira/browse/GROOVY-9934
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 3.0.7
> Reporter: Thodoris Sotiropoulos
> Priority: Major
>
> I have the following Groovy program
> {code:java}
> class Bar {}
> class Foo<T extends Bar> {
> public T method(T x) {
> def bar = {x}
> return bar()
> }
> }
> {code}
> h3. Actual Behavior
> The compiler raise the following compile-time error
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Main.groovy: 6: [Static type checking] - Cannot return value of type
> java.lang.Object on method returning type T
> @ line 6, column 12.
> return bar()
> ^1 error
> {code}
> h3. Expected Behavior
> Compile successfully. Notably, when I remove the "extends" keyword from the
> type parameter, the code type checks as expected.
>
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