FIR: fix serialization of accessor with source-level annotations

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java

@@ -13724,6 +13724,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/fir/IrBuiltIns.kt");
         }
 
+        @Test
+        @TestMetadata("NameHighlighter.kt")
+        public void testNameHighlighter() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/NameHighlighter.kt");
+        }
+
         @Test
         @TestMetadata("SuspendExtension.kt")
         public void testSuspendExtension() throws Exception {

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt

@@ -714,11 +714,12 @@ class FirElementSerializer private constructor(
     private fun getAccessorFlags(accessor: FirPropertyAccessor, property: FirProperty): Int {
         // [FirDefaultPropertyAccessor]---a property accessor without body---can still hold other information, such as annotations,
         // user-contributed visibility, and modifiers, such as `external` or `inline`.
+        val nonSourceAnnotations = accessor.nonSourceAnnotations(session)
         val isDefault = accessor is FirDefaultPropertyAccessor &&
-                accessor.annotations.isEmpty() && accessor.visibility == property.visibility &&
+                nonSourceAnnotations.isEmpty() && accessor.visibility == property.visibility &&
                 !accessor.isExternal && !accessor.isInline
         return Flags.getAccessorFlags(
-            accessor.nonSourceAnnotations(session).isNotEmpty(),
+            nonSourceAnnotations.isNotEmpty(),
             ProtoEnumFlags.visibility(normalizeVisibility(accessor)),
             ProtoEnumFlags.modality(accessor.modality!!),
             !isDefault,

compiler/testData/codegen/box/fir/NameHighlighter.kt

@@ -0,0 +1,27 @@
+// TARGET_BACKEND: JVM
+// MODULE: lib
+// FILE: NameHighlighter.kt
+
+object NameHighlighter {
+    var namesHighlightingEnabled = true
+        @TestOnly set
+}
+
+// FILE: TestOnly.java
+
+import java.lang.annotation.*;
+
+@Retention(RetentionPolicy.SOURCE)
+@Target({ElementType.METHOD, ElementType.CONSTRUCTOR})
+public @interface TestOnly {
+}
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+fun box(): String {
+    if (!NameHighlighter.namesHighlightingEnabled) return "FAIL 1"
+    NameHighlighter.namesHighlightingEnabled = false
+    if (NameHighlighter.namesHighlightingEnabled) return "FAIL 2"
+    return "OK"
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java

@@ -13724,6 +13724,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/fir/IrBuiltIns.kt");
         }
 
+        @Test
+        @TestMetadata("NameHighlighter.kt")
+        public void testNameHighlighter() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/NameHighlighter.kt");
+        }
+
         @Test
         @TestMetadata("SuspendExtension.kt")
         public void testSuspendExtension() throws Exception {

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java

@@ -13724,6 +13724,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/fir/IrBuiltIns.kt");
         }
 
+        @Test
+        @TestMetadata("NameHighlighter.kt")
+        public void testNameHighlighter() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/NameHighlighter.kt");
+        }
+
         @Test
         @TestMetadata("SuspendExtension.kt")
         public void testSuspendExtension() throws Exception {

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -12061,6 +12061,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
         public void testIrBuiltIns() throws Exception {
             runTest("compiler/testData/codegen/box/fir/IrBuiltIns.kt");
         }
+
+        @TestMetadata("NameHighlighter.kt")
+        public void testNameHighlighter() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/NameHighlighter.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/fullJdk")