FIR checker: apply override checker to anonymous objects

^KT-44695 Fixed

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirOverrideChecker.kt

@@ -26,8 +26,8 @@ import org.jetbrains.kotlin.types.AbstractTypeCheckerContext
 import org.jetbrains.kotlin.utils.addToStdlib.min
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 
-object FirOverrideChecker : FirRegularClassChecker() {
+object FirOverrideChecker : FirClassChecker() {
-    override fun check(declaration: FirRegularClass, context: CheckerContext, reporter: DiagnosticReporter) {
+    override fun check(declaration: FirClass<*>, context: CheckerContext, reporter: DiagnosticReporter) {
         val typeCheckerContext = context.session.typeContext.newBaseTypeCheckerContext(
             errorTypesEqualToAnything = false,
             stubTypesEqualToAnything = false

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/checkers/CommonDeclarationCheckers.kt

@@ -37,6 +37,7 @@ object CommonDeclarationCheckers : DeclarationCheckers() {
     )
 
     override val classCheckers: Set<FirClassChecker> = setOf(
+        FirOverrideChecker,
         FirThrowableSubclassChecker,
     )
 
@@ -51,7 +52,6 @@ object CommonDeclarationCheckers : DeclarationCheckers() {
         FirLocalEntityNotAllowedChecker,
         FirManyCompanionObjectsChecker,
         FirMethodOfAnyImplementedInInterfaceChecker,
-        FirOverrideChecker,
         FirPrimaryConstructorRequiredForDataClassChecker,
         FirSupertypeInitializedInInterfaceChecker,
         FirSupertypeInitializedWithoutPrimaryConstructor,

compiler/testData/diagnostics/tests/enum/openMemberInEnum.fir.kt

@@ -1,17 +0,0 @@
-enum class EnumWithOpenMembers {
-    E1 {
-        override fun foo() = 1
-        override val bar: String = "a"
-    },
-
-    E2 {
-        override fun f() = 3
-        override val b = 4
-    };
-
-    open fun foo() = 1
-    open val bar: String = ""
-
-    fun f() = 2
-    val b = 3
-}

compiler/testData/diagnostics/tests/enum/openMemberInEnum.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 enum class EnumWithOpenMembers {
     E1 {
         override fun foo() = 1

compiler/tests-spec/testData/diagnostics/linked/declarations/classifier-declaration/class-declaration/abstract-classes/p-2/neg/1.2.fir.kt

@@ -21,12 +21,12 @@ fun case1() {
         override var a: Any
             get() = TODO()
             set(value) {}
-        override val b: Any
+        override <!VAR_OVERRIDDEN_BY_VAL!>val<!> b: Any
             get() = TODO()
         override var c: Any
             get() = TODO()
             set(value) {}
-        override val d: Any
+        override <!VAR_OVERRIDDEN_BY_VAL!>val<!> d: Any
             get() = TODO()
 
         override fun foo() {}