KtLightMethod: isVarArgs() does not trigger exact delegate computation

compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/KtLightMethodImpl.kt

@@ -214,7 +214,7 @@ class KtLightMethodImpl private constructor(
 
     override fun hasTypeParameters() = clsDelegate.hasTypeParameters()
 
-    override fun isVarArgs() = clsDelegate.isVarArgs
+    override fun isVarArgs() = (dummyDelegate ?: clsDelegate).isVarArgs
 
     override fun isConstructor() = dummyDelegate?.isConstructor ?: clsDelegate.isConstructor
 

compiler/testData/asJava/lightClasses/VarArgs.java

@@ -0,0 +1,7 @@
+public final class C {
+    public final void f(@org.jetbrains.annotations.NotNull int... i) { /* compiled code */ }
+
+    public final void p(int i, @org.jetbrains.annotations.NotNull java.lang.String... s) { /* compiled code */ }
+
+    public C() { /* compiled code */ }
+}

compiler/testData/asJava/lightClasses/VarArgs.kt

@@ -0,0 +1,12 @@
+// C
+
+class C {
+
+    fun f(vararg i: Int) {
+
+    }
+
+    fun p(i: Int, vararg s: String) {
+
+    }
+}

compiler/tests/org/jetbrains/kotlin/asJava/CompilerLightClassTestGenerated.java

@@ -84,6 +84,12 @@ public class CompilerLightClassTestGenerated extends AbstractCompilerLightClassT
         doTest(fileName);
     }
 
+    @TestMetadata("VarArgs.kt")
+    public void testVarArgs() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/asJava/lightClasses/VarArgs.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("compiler/testData/asJava/lightClasses/compilationErrors")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/AbstractIdeLightClassTest.kt

@@ -225,13 +225,14 @@ object LightClassLazinessChecker {
             val name: String,
             val modifiers: List<String>,
             val isConstructor: Boolean,
-            val parameterCount: Int
+            val parameterCount: Int,
+            val isVarargs: Boolean
     )
 
     private fun methodInfo(method: PsiMethod) = with(method) {
         MethodInfo(
                 name, PsiModifier.MODIFIERS.asList().filter { modifierList.hasModifierProperty(it) },
-                isConstructor, method.parameterList.parametersCount
+                isConstructor, method.parameterList.parametersCount, isVarArgs
         )
     }
 }

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/IdeCompiledLightClassTestGenerated.java

@@ -84,6 +84,12 @@ public class IdeCompiledLightClassTestGenerated extends AbstractIdeCompiledLight
         doTest(fileName);
     }
 
+    @TestMetadata("VarArgs.kt")
+    public void testVarArgs() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/asJava/lightClasses/VarArgs.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("compiler/testData/asJava/lightClasses/delegation")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/IdeLightClassTestGenerated.java

@@ -84,6 +84,12 @@ public class IdeLightClassTestGenerated extends AbstractIdeLightClassTest {
         doTest(fileName);
     }
 
+    @TestMetadata("VarArgs.kt")
+    public void testVarArgs() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/asJava/lightClasses/VarArgs.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("compiler/testData/asJava/lightClasses/compilationErrors")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)