src/hotspot/share/classfile/packageEntry.cpp

@@ -243,10 +243,11 @@
   _qualified_exports = ModuleEntry::read_archived_entry_array((Array<ModuleEntry*>*)_qualified_exports);
   JFR_ONLY(INIT_ID(this);)
 }
 
 static int compare_package_by_name(PackageEntry* a, PackageEntry* b) {
+  assert(a == b || a->name() != b->name(), "no duplicated names");
   return a->name()->fast_compare(b->name());
 }
 
 Array<PackageEntry*>* PackageEntryTable::allocate_archived_entries() {
   // First count the packages in named modules