src/share/vm/classfile/systemDictionary.cpp

@@ -1220,10 +1220,12 @@
 //   - Class from -Xbootclasspath/a. The class has no defined PackageEntry, or must
 //     be defined in an unnamed module.
 bool SystemDictionary::is_shared_class_visible(Symbol* class_name,
                                                instanceKlassHandle ik,
                                                Handle class_loader, TRAPS) {
+  assert(!ModuleEntryTable::javabase_moduleEntry()->is_patched(),
+         "Cannot use sharing if java.base is patched");
   ResourceMark rm;
   int path_index = ik->shared_classpath_index();
   SharedClassPathEntry* ent =
             (SharedClassPathEntry*)FileMapInfo::shared_classpath(path_index);
   if (!Universe::is_module_initialized()) {

@@ -1247,10 +1249,16 @@
     if (pkg_entry != NULL) {
       mod_entry = pkg_entry->module();
     }
   }
 
+  // If the archived class is from a module that has been patched at runtime,
+  // the class cannot be loaded from the archive.
+  if (mod_entry != NULL && mod_entry->is_patched()) {
+    return false;
+  }
+
   if (class_loader.is_null()) {
     assert(ent != NULL, "Shared class for NULL classloader must have valid SharedClassPathEntry");
     // The NULL classloader can load archived class originated from the
     // "modules" jimage and the -Xbootclasspath/a. For class from the
     // "modules" jimage, the PackageEntry/ModuleEntry must be defined