[FE 1.0] Don't report OVERRIDE_DEPRECATION on default accessors of de…

…precated properties

^KT-51893 Fixed

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/DeprecationInheritanceChecker.kt

@@ -7,13 +7,18 @@ package org.jetbrains.kotlin.resolve.checkers
 
 import org.jetbrains.kotlin.config.LanguageFeature.StopPropagatingDeprecationThroughOverrides
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.PropertyAccessorDescriptor
 import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.psi.KtDeclaration
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
+import org.jetbrains.kotlin.psi.KtProperty
 
 object DeprecationInheritanceChecker : DeclarationChecker {
     override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
         if (declaration !is KtNamedDeclaration) return
+        if (declaration is KtProperty && descriptor is PropertyAccessorDescriptor && descriptor.isDefault) {
+            return
+        }
         val deprecationResolver = context.deprecationResolver
         if (!deprecationResolver.areDeprecationsInheritedFromOverriden(descriptor)) return
         val (deprecations, message) = if (context.languageVersionSettings.supportsFeature(StopPropagatingDeprecationThroughOverrides)) {

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

@@ -0,0 +1,45 @@
+// FIR_IDENTICAL
+// ISSUE: KT-51893
+
+interface A {
+    @Deprecated("")
+    val a: String
+
+    @Deprecated("")
+    val b: String
+
+    @Deprecated("")
+    var c: String
+
+    @Deprecated("")
+    var d: String
+
+    @Deprecated("")
+    var e: String
+
+    @Deprecated("")
+    var h: String
+}
+
+object B : A {
+    override val <!OVERRIDE_DEPRECATION!>a<!>: String = ""
+
+    override val <!OVERRIDE_DEPRECATION!>b<!>: String
+        get() = ""
+
+    override var <!OVERRIDE_DEPRECATION!>c<!>: String = ""
+
+    override var <!OVERRIDE_DEPRECATION!>d<!>: String = ""
+        get() = field
+
+    override var <!OVERRIDE_DEPRECATION!>e<!>: String = ""
+        set(value) {
+            field = value
+        }
+
+    override var <!OVERRIDE_DEPRECATION!>h<!>: String = ""
+        get() = field
+        set(value) {
+            field = value
+        }
+}

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

@@ -0,0 +1,26 @@
+package
+
+public interface A {
+    @kotlin.Deprecated(message = "") public abstract val a: kotlin.String
+    @kotlin.Deprecated(message = "") public abstract val b: kotlin.String
+    @kotlin.Deprecated(message = "") public abstract var c: kotlin.String
+    @kotlin.Deprecated(message = "") public abstract var d: kotlin.String
+    @kotlin.Deprecated(message = "") public abstract var e: kotlin.String
+    @kotlin.Deprecated(message = "") public abstract var h: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public object B : A {
+    private constructor B()
+    public open override /*1*/ val a: kotlin.String = ""
+    public open override /*1*/ val b: kotlin.String
+    public open override /*1*/ var c: kotlin.String
+    public open override /*1*/ var d: kotlin.String
+    public open override /*1*/ var e: kotlin.String
+    public open override /*1*/ var h: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}