Report error instead of warning for deprecation level HIDDEN

Since functions usually are hidden from resolution when they are
deprecated-hidden, the problem can only be reproduced for properties with
deprecated-hidden accessors, where DeprecatedCallChecker reported warnings
instead of errors

compiler/frontend/src/org/jetbrains/kotlin/resolve/deprecationUtil.kt

@@ -26,6 +26,7 @@ import org.jetbrains.kotlin.descriptors.annotations.Annotations
 import org.jetbrains.kotlin.diagnostics.Diagnostic
 import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.resolve.DeprecationLevelValue.*
 import org.jetbrains.kotlin.resolve.annotations.argumentValue
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
 import java.util.*
@@ -46,10 +47,10 @@ private data class DeprecatedByAnnotation(private val annotation: AnnotationDesc
             val level = annotation.argumentValue("level") as? ClassDescriptor
 
             return when (level?.name?.asString()) {
-                "WARNING" -> DeprecationLevelValue.WARNING
+                "WARNING" -> WARNING
-                "ERROR" -> DeprecationLevelValue.ERROR
+                "ERROR" -> ERROR
-                "HIDDEN" -> DeprecationLevelValue.HIDDEN
+                "HIDDEN" -> HIDDEN
-                else -> DeprecationLevelValue.WARNING
+                else -> WARNING
             }
         }
 
@@ -172,11 +173,12 @@ private fun DeclarationDescriptor.getDeclaredDeprecatedAnnotation(
 
 internal fun createDeprecationDiagnostic(element: PsiElement, deprecation: Deprecation): Diagnostic {
     val targetOriginal = deprecation.target.original
-    if (deprecation.deprecationLevel == DeprecationLevelValue.ERROR) {
+    val diagnosticFactory = when (deprecation.deprecationLevel) {
-        return Errors.DEPRECATION_ERROR.on(element, targetOriginal, deprecation.message)
+        WARNING -> Errors.DEPRECATION
+        ERROR -> Errors.DEPRECATION_ERROR
+        HIDDEN -> Errors.DEPRECATION_ERROR
     }
-
+    return diagnosticFactory.on(element, targetOriginal, deprecation.message)
-    return Errors.DEPRECATION.on(element, targetOriginal, deprecation.message)
 }
 
 // values from kotlin.DeprecationLevel
@@ -185,7 +187,7 @@ enum class DeprecationLevelValue {
 }
 
 fun DeclarationDescriptor.isDeprecatedHidden(): Boolean {
-    return getDeprecation()?.deprecationLevel == DeprecationLevelValue.HIDDEN
+    return getDeprecation()?.deprecationLevel == HIDDEN
 }
 
 @JvmOverloads

compiler/testData/diagnostics/tests/deprecated/deprecatedPropertyInheritance.kt

@@ -131,5 +131,5 @@ fun use(
     ned.p = 1
 
     diff.<!DEPRECATION!>p<!>
-    diff.<!DEPRECATION, DEPRECATION!>p<!> = 1
+    diff.<!DEPRECATION, DEPRECATION_ERROR!>p<!> = 1
 }

compiler/testData/diagnostics/tests/deprecated/hiddenPropertyAccessors.kt

@@ -0,0 +1,40 @@
+val v1: String
+    @Deprecated("", level = DeprecationLevel.HIDDEN)
+    get() = ""
+
+@Deprecated("", level = DeprecationLevel.HIDDEN)
+val v2 = ""
+
+var v3: String
+    @Deprecated("", level = DeprecationLevel.HIDDEN)
+    get() = ""
+    set(value) {}
+
+var v4: String
+    get() = ""
+    @Deprecated("", level = DeprecationLevel.HIDDEN)
+    set(value) {}
+
+var v5: String
+    @Deprecated("", level = DeprecationLevel.HIDDEN)
+    get() = ""
+    @Deprecated("", level = DeprecationLevel.HIDDEN)
+    set(value) {}
+
+@Deprecated("", level = DeprecationLevel.HIDDEN)
+var v6: String
+    get() = ""
+    set(value) {}
+
+fun test() {
+    <!DEPRECATION_ERROR!>v1<!>
+    <!UNRESOLVED_REFERENCE!>v2<!>
+    <!DEPRECATION_ERROR!>v3<!>
+    v3 = ""
+    v4
+    <!DEPRECATION_ERROR!>v4<!> = ""
+    <!DEPRECATION_ERROR!>v5<!>
+    <!DEPRECATION_ERROR!>v5<!> = ""
+    <!UNRESOLVED_REFERENCE!>v6<!>
+    <!UNRESOLVED_REFERENCE!>v6<!> = ""
+}

compiler/testData/diagnostics/tests/deprecated/hiddenPropertyAccessors.txt

@@ -0,0 +1,9 @@
+package
+
+public val v1: kotlin.String
+@kotlin.Deprecated(level = DeprecationLevel.HIDDEN, message = "") public val v2: kotlin.String = ""
+public var v3: kotlin.String
+public var v4: kotlin.String
+public var v5: kotlin.String
+@kotlin.Deprecated(level = DeprecationLevel.HIDDEN, message = "") public var v6: kotlin.String
+public fun test(): kotlin.Unit

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -5952,6 +5952,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("hiddenPropertyAccessors.kt")
+            public void testHiddenPropertyAccessors() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/deprecated/hiddenPropertyAccessors.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("importJavaSamInterface.kt")
             public void testImportJavaSamInterface() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/deprecated/importJavaSamInterface.kt");