src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ArchiveEntryResourcePoolEntry.java

@@ -78,9 +78,9 @@
             case NATIVE_CMD:
                 return Type.NATIVE_CMD;
             case NATIVE_LIB:
                 return Type.NATIVE_LIB;
             default:
-                return ResourcePoolEntry.Type.OTHER;
+                throw new IllegalArgumentException("Unknown archive entry type: " + entry.type());
         }
     }
 }