Chris Briem created GROOVY-10648:
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Summary: Compile error during static compilation (missing type
derivation?)
Key: GROOVY-10648
URL: https://issues.apache.org/jira/browse/GROOVY-10648
Project: Groovy
Issue Type: Bug
Components: Compiler
Affects Versions: 3.0.11
Environment: Gradle, Windows
Reporter: Chris Briem
Hi all!
The following code doesn't compile on my machine with Groovy 3.0.11. But it
does compile with 3.0.10 and 4.0.2:
{code:groovy}
@CompileStatic
class TestClass2 {
def <T extends Number> Set<T> fill(Iterable<T> a_consumable) {
Set<T> result = new HashSet<>()
a_consumable.forEach { result.add(it) }
return result
}
}
{code}
The compilation fails with the following output:
{noformat}
9: [Static type checking] - Cannot call java.util.HashSet <T>#add(T) with
arguments [java.lang.Object]
{noformat}
Expected behavior:
AFAICT, this code should compile, as the type of {{it}} can be derived.
Additional remarks:
Interestingly, the code compiles if I replace {{ <T extends Number> }} with
just {{ <T> }}. An explicit cast also helps. So workaround is easy.
If you need more info, feel free to ask!
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