Fix for varargs as annotation arguments #KT-4326 Fixed

compiler/testData/codegen/boxWithStdlib/annotations/varargInAnnotationParameter.kt

@@ -2,20 +2,50 @@ import java.lang.annotation.Retention
 import java.lang.annotation.RetentionPolicy
 
 Retention(RetentionPolicy.RUNTIME)
-annotation class Ann(val s: String, vararg val p: Int)
+annotation class Ann(vararg val p: Int)
 
-Ann("str", 1, 2, 3) class MyClass
+Ann() class MyClass1
+Ann(1) class MyClass2
+Ann(1, 2) class MyClass3
+
+Ann(*intArray()) class MyClass4
+Ann(*intArray(1)) class MyClass5
+Ann(*intArray(1, 2)) class MyClass6
+
+Ann(p = 1) class MyClass7
+
+Ann(p = *intArray()) class MyClass8
+Ann(p = *intArray(1)) class MyClass9
+Ann(p = *intArray(1, 2)) class MyClass10
 
 fun box(): String {
-    val ann = javaClass<MyClass>().getAnnotation(javaClass<Ann>())
-    if (ann == null) return "fail: cannot find Ann on MyClass"
-    if (ann.s != "str") return "fail: annotation parameter s should be \"str\""
-    if (ann.p[0] != 1) return "fail: annotation parameter p[0] should be 1"
-    if (ann.p[1] != 2) return "fail: annotation parameter p[1] should be 2"
-    if (ann.p[2] != 3) return "fail: annotation parameter p[2] should be 3"
+    test(javaClass<MyClass1>(), "")
+    test(javaClass<MyClass2>(), "1")
+    test(javaClass<MyClass3>(), "12")
+
+    test(javaClass<MyClass4>(), "")
+    test(javaClass<MyClass5>(), "1")
+    test(javaClass<MyClass6>(), "12")
+
+    test(javaClass<MyClass7>(), "1")
+
+    test(javaClass<MyClass8>(), "")
+    test(javaClass<MyClass9>(), "1")
+    test(javaClass<MyClass10>(), "12")
+
     return "OK"
 }
 
-fun main(args: Array<String>) {
-    println(box())
+fun test(klass: Class<*>, expected: String) {
+    val ann = klass.getAnnotation(javaClass<Ann>())
+    if (ann == null) throw AssertionError("fail: cannot find Ann on ${klass}")
+
+    var result = ""
+    for (i in ann.p) {
+        result += i
+    }
+
+    if (result != expected) {
+        throw AssertionError("fail: expected = ${expected}, actual = ${result}")
+    }
 }