Luke Bemish created GROOVY-10797:
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Summary: Stubs with raw type parameters generated through joint
compilation cannot be compiled by javac
Key: GROOVY-10797
URL: https://issues.apache.org/jira/browse/GROOVY-10797
Project: Groovy
Issue Type: Bug
Components: Compiler
Affects Versions: 4.0.6
Reporter: Luke Bemish
Stubs generated by groovyc for joint compilation that contain parameterized
types as return values that use a raw type as a type parameter cannot be
compiled by javac, even though the code generating these may compile just fine
without joint compilation.
I am compiling against a java library that has two classes that look something
like as follows:
{code:java}
public class Inner<T> {
}
{code}
{code:java}
public class Outer<T extends Inner<?>> {
}
{code}
My own class has the following method:
{code:groovy}
static <T extends Inner> Outer<T> methodName() {
return null
}
{code}
If joint compilation is enabled and a stub is generated for the class with that
method, the following stub is generated:
{code:java}
public static <T extends Inner> Outer<T> someMethod() { return (Outer<T>)null;}
{code}
This throws the following error when compiled with javac:
{code:java}
error: type argument T#1 is not within bounds of type-variable T#2
public static <T extends Inner> Outer<T> someMethod() { return
(Outer<T>)null;}
^
where T#1,T#2 are type-variables:
T#1 extends Inner declared in method <T#1>someMethod()
T#2 extends Inner<?> declared in class Outer{code}
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