Support java synthetic properties in DependencyCollector

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DependenciesCollector.kt

@@ -82,16 +82,25 @@ class DependenciesCollector {
 
     private fun Collection<IrSymbol>.addTopLevelDeclarations() {
         forEach {
-            addTopLevelDescriptor(getTopLevelDeclaration(it.descriptor))
+            getTopLevelDeclaration(it.descriptor)?.let { addTopLevelDescriptor(it) }
         }
     }
 
-    private fun getTopLevelDeclaration(descriptor: DeclarationDescriptor): DeclarationDescriptor {
+    private fun getTopLevelDeclaration(descriptor: DeclarationDescriptor): DeclarationDescriptor? {
         val containingDeclaration = descriptor.containingDeclaration
         return when (containingDeclaration) {
             is PackageFragmentDescriptor -> descriptor
             is ClassDescriptor -> getTopLevelDeclaration(containingDeclaration)
-            else -> throw AssertionError("Package or class expected: $containingDeclaration; for $descriptor")
+            else ->
+                if (descriptor is PropertyAccessorDescriptor &&
+                    descriptor.kind == CallableMemberDescriptor.Kind.SYNTHESIZED &&
+                    containingDeclaration is ModuleDescriptor
+                ) {
+                    //skip synthetic java properties
+                    null
+                } else {
+                    throw AssertionError("Package or class expected: $containingDeclaration; for $descriptor")
+                }
         }
     }