Merge pull request #11308 from tamasvajk/kotlin-non-serializable-field

Kotlin: Exclude .kt files from non serializable field query

java/ql/src/Likely Bugs/Serialization/NonSerializableField.ql

@@ -90,7 +90,7 @@ predicate exceptions(Class c, Field f) {
 
 from Class c, Field f, string reason
 where
-  c.fromSource() and
+  c.getFile().isJavaSourceFile() and
   c.getAStrictAncestor() instanceof TypeSerializable and
   f.getDeclaringType() = c and
   not exceptions(c, f) and

java/ql/test/kotlin/query-tests/NonSerializableField/NonSerializableField.qlref

@@ -0,0 +1 @@
+Likely Bugs/Serialization/NonSerializableField.ql

java/ql/test/kotlin/query-tests/NonSerializableField/NonSerializableFieldTest.kt

@@ -0,0 +1,4 @@
+class Foo {
+    fun f(i: Int) {}
+    fun g(i: Int) { (this::f)(i) }
+}