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https://issues.apache.org/jira/browse/GROOVY-7907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Marcin Zajaczkowski updated GROOVY-7907:
----------------------------------------
Description:
Static compilation fails when method is parameterized and there are varargs
arguments which are not used in the call.
{code}
Error:(9, 23) Groovyc: [Static type checking] - Cannot assign value of type
java.lang.Object to variable of type Ext.
{code}
Simple classes to reproduce the problem:
{code}
public class FooInJava { //needs to be in Java, a class in Groovy works fine
<T> T create(Class<T> type, Object... args) { return null; }
}
class Ext {}
@CompileStatic
class FooMain {
static void main(String[] args) {
Ext create = new FooInJava().create(Ext) //casting is required to make
compilation pass
}
}
{code}
It only occurs if a class with unfortunate method signature is written in Java
and static compilation is enabled. Casting to the right type helps. Originally
spotted with Gradle - `ExtensionContainer.create(...)`.
was:
Static compilation fails when method is parameterized and there are varargs
arguments which are not used in the call.
{code}
Error:(9, 23) Groovyc: [Static type checking] - Cannot assign value of type
java.lang.Object to variable of type Ext.
{code}
Simple classes to reproduce the problem:
{code}
public class FooInJava {
<T> T create(Class<T> type, Object... args) { return null; }
}
class Ext {}
@CompileStatic
class FooMain {
static void main(String[] args) {
Ext create = new FooInJava().create(Ext) //casting is required to make
compilation pass
}
}
{code}
It only occurs if a class with unfortunate method signature is written in Java
and static compilation is enabled. Casting to the right type helps. Originally
spotted with Gradle - `ExtensionContainer.create(...)`.
> Cannot assign value of type java.lang.Object with varargs, perameterized
> method and @CompileStatic
> --------------------------------------------------------------------------------------------------
>
> Key: GROOVY-7907
> URL: https://issues.apache.org/jira/browse/GROOVY-7907
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 2.4.7
> Environment: Groovy 2.4.7 (tested also with 2.4.4)
> Reporter: Marcin Zajaczkowski
> Priority: Minor
>
> Static compilation fails when method is parameterized and there are varargs
> arguments which are not used in the call.
> {code}
> Error:(9, 23) Groovyc: [Static type checking] - Cannot assign value of type
> java.lang.Object to variable of type Ext.
> {code}
> Simple classes to reproduce the problem:
> {code}
> public class FooInJava { //needs to be in Java, a class in Groovy works fine
> <T> T create(Class<T> type, Object... args) { return null; }
> }
> class Ext {}
> @CompileStatic
> class FooMain {
> static void main(String[] args) {
> Ext create = new FooInJava().create(Ext) //casting is required to
> make compilation pass
> }
> }
> {code}
> It only occurs if a class with unfortunate method signature is written in
> Java and static compilation is enabled. Casting to the right type helps.
> Originally spotted with Gradle - `ExtensionContainer.create(...)`.
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