Fix false positive in class literal #KT-16338 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/LeakingThisInspection.kt

@@ -19,6 +19,7 @@ import org.jetbrains.kotlin.idea.quickfix.AddModifierFix
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
+import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
 import org.jetbrains.kotlin.resolve.BindingContext.LEAKING_THIS
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
 
@@ -35,7 +36,7 @@ class LeakingThisInspection : AbstractKotlinInspection() {
                 if (leakingThisDescriptor.classOrObject != klass) continue@these
                 val description = when (leakingThisDescriptor) {
                     is NonFinalClass ->
-                        if (expression is KtThisExpression)
+                        if (expression is KtThisExpression && expression.getStrictParentOfType<KtClassLiteralExpression>() == null)
                             "Leaking 'this' in constructor of non-final class ${leakingThisDescriptor.klass.name}"
                         else
                             continue@these // Not supported yet

idea/testData/inspectionsLocal/leakingThis/inClassLiteral.kt

@@ -0,0 +1,20 @@
+// PROBLEM: none
+
+import kotlin.reflect.KClass
+
+open class Foo {
+    init {
+        test(<caret>this::class)
+    }
+}
+
+private fun test(c: KClass<out Foo>) {
+//     println(c)
+}
+
+class Bar : Foo()
+
+fun main(args: Array<String>) {
+    Foo()
+    Bar()
+}

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -2587,6 +2587,11 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/inspectionsLocal/leakingThis"), Pattern.compile("^([\\w\\-_]+)\\.(kt|kts)$"), TargetBackend.ANY, true);
         }
 
+        @TestMetadata("inClassLiteral.kt")
+        public void testInClassLiteral() throws Exception {
+            runTest("idea/testData/inspectionsLocal/leakingThis/inClassLiteral.kt");
+        }
+
         @TestMetadata("noOpenForInterface.kt")
         public void testNoOpenForInterface() throws Exception {
             runTest("idea/testData/inspectionsLocal/leakingThis/noOpenForInterface.kt");