Fix: extract directly exposed fields with `static` modifier

java/kotlin-extractor/src/main/kotlin/KotlinFileExtractor.kt

@@ -1262,13 +1262,13 @@ open class KotlinFileExtractor(
            DeclarationStackAdjuster(f).use {
                val fNameSuffix = getExtensionReceiverType(f)?.let { it.classFqName?.asString()?.replace(".", "$$") } ?: ""
                val extractType = if (isAnnotationClassField(f)) kClassToJavaClass(f.type) else f.type
-               return extractField(useField(f), "${f.name.asString()}$fNameSuffix", extractType, parentId, tw.getLocation(f), f.visibility, f, isExternalDeclaration(f), f.isFinal)
+               return extractField(useField(f), "${f.name.asString()}$fNameSuffix", extractType, parentId, tw.getLocation(f), f.visibility, f, isExternalDeclaration(f), f.isFinal, isDirectlyExposedCompanionObjectField(f))
            }
         }
     }
 
 
-    private fun extractField(id: Label<out DbField>, name: String, type: IrType, parentId: Label<out DbReftype>, locId: Label<DbLocation>, visibility: DescriptorVisibility, errorElement: IrElement, isExternalDeclaration: Boolean, isFinal: Boolean): Label<out DbField> {
+    private fun extractField(id: Label<out DbField>, name: String, type: IrType, parentId: Label<out DbReftype>, locId: Label<DbLocation>, visibility: DescriptorVisibility, errorElement: IrElement, isExternalDeclaration: Boolean, isFinal: Boolean, isStatic: Boolean): Label<out DbField> {
         val t = useType(type)
         tw.writeFields(id, name, t.javaResult.id, parentId, id)
         tw.writeFieldsKotlinType(id, t.kotlinResult.id)
@@ -1278,6 +1278,9 @@ open class KotlinFileExtractor(
         if (isFinal) {
             addModifiers(id, "final")
         }
+        if (isStatic) {
+            addModifiers(id, "static")
+        }
 
         if (!isExternalDeclaration) {
             val fieldDeclarationId = tw.getFreshIdLabel<DbFielddecl>()
@@ -4209,12 +4212,12 @@ open class KotlinFileExtractor(
             val firstAssignmentStmtIdx = 1
 
             if (dispatchReceiverInfo != null) {
-                extractField(dispatchReceiverInfo.field, "<dispatchReceiver>", dispatchReceiverInfo.type, classId, locId, DescriptorVisibilities.PRIVATE, callableReferenceExpr, isExternalDeclaration = false, isFinal = true)
+                extractField(dispatchReceiverInfo.field, "<dispatchReceiver>", dispatchReceiverInfo.type, classId, locId, DescriptorVisibilities.PRIVATE, callableReferenceExpr, isExternalDeclaration = false, isFinal = true, isStatic = false)
                 extractParameterToFieldAssignmentInConstructor("<dispatchReceiver>", dispatchReceiverInfo.type, dispatchReceiverInfo.field, 0 + dispatchReceiverInfo.indexOffset, firstAssignmentStmtIdx + dispatchReceiverInfo.indexOffset)
             }
 
             if (extensionReceiverInfo != null) {
-                extractField(extensionReceiverInfo.field, "<extensionReceiver>", extensionReceiverInfo.type, classId, locId, DescriptorVisibilities.PRIVATE, callableReferenceExpr, isExternalDeclaration = false, isFinal = true)
+                extractField(extensionReceiverInfo.field, "<extensionReceiver>", extensionReceiverInfo.type, classId, locId, DescriptorVisibilities.PRIVATE, callableReferenceExpr, isExternalDeclaration = false, isFinal = true, isStatic = false)
                 extractParameterToFieldAssignmentInConstructor( "<extensionReceiver>", extensionReceiverInfo.type, extensionReceiverInfo.field, 0 + extensionReceiverInfo.indexOffset, firstAssignmentStmtIdx + extensionReceiverInfo.indexOffset)
             }
         }
@@ -5282,7 +5285,7 @@ open class KotlinFileExtractor(
 
                     // add field
                     val fieldId = tw.getFreshIdLabel<DbField>()
-                    extractField(fieldId, "<fn>", functionType, classId, locId, DescriptorVisibilities.PRIVATE, e, isExternalDeclaration = false, isFinal = true)
+                    extractField(fieldId, "<fn>", functionType, classId, locId, DescriptorVisibilities.PRIVATE, e, isExternalDeclaration = false, isFinal = true, isStatic = false)
 
                     // adjust constructor
                     helper.extractParameterToFieldAssignmentInConstructor("<fn>", functionType, fieldId, 0, 1)

java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt

@@ -1649,7 +1649,7 @@ open class KotlinUsesExtractor(
     fun useValueParameter(vp: IrValueParameter, parent: Label<out DbCallable>?): Label<out DbParam> =
         tw.getLabelFor(getValueParameterLabel(vp, parent))
 
-    private fun isDirectlyExposedCompanionObjectField(f: IrField) =
+    private fun isDirectlyExposableCompanionObjectField(f: IrField) =
         f.hasAnnotation(FqName("kotlin.jvm.JvmField")) ||
         f.correspondingPropertySymbol?.owner?.let {
             it.isConst || it.isLateinit
@@ -1657,12 +1657,14 @@ open class KotlinUsesExtractor(
 
     fun getFieldParent(f: IrField) =
         f.parentClassOrNull?.let {
-            if (it.isCompanion && isDirectlyExposedCompanionObjectField(f))
+            if (it.isCompanion && isDirectlyExposableCompanionObjectField(f))
                 it.parent
             else
                 null
         } ?: f.parent
 
+    fun isDirectlyExposedCompanionObjectField(f: IrField) = getFieldParent(f) != f.parent
+
     // Gets a field's corresponding property's extension receiver type, if any
     fun getExtensionReceiverType(f: IrField) =
         f.correspondingPropertySymbol?.owner?.let {