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src/hotspot/share/oops/klassVtable.cpp

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@@ -507,24 +507,27 @@
                                                         CHECK_(false));
             if (failed_type_symbol != NULL) {
               const char* msg = "loader constraint violation for class %s: when selecting "
                 "overriding method %s the class loader %s of the "
                 "selected method's type %s, and the class loader %s for its super "
-                "type %s have different Class objects for the type %s used in the signature";
+                "type %s have different Class objects for the type %s used in the signature (%s; %s)";
               const char* curr_class = klass->external_name();
               const char* method = target_method()->name_and_sig_as_C_string();
-              const char* loader1 = java_lang_ClassLoader::describe_external(target_loader());
+              const char* loader1 = target_klass->class_loader_data()->loader_name_and_id();
               const char* sel_class = target_klass->external_name();
-              const char* loader2 = java_lang_ClassLoader::describe_external(super_loader());
+              const char* sel_class_description = target_klass->class_in_module_of_loader(false,true);
+              const char* loader2 = super_klass->class_loader_data()->loader_name_and_id();
               const char* super_class = super_klass->external_name();
+              const char* super_class_description = super_klass->class_in_module_of_loader(false,true);
               const char* failed_type_name = failed_type_symbol->as_klass_external_name();
               size_t buflen = strlen(msg) + strlen(curr_class) + strlen(method) +
-                strlen(loader1) + strlen(sel_class) + strlen(loader2) +
-                strlen(super_class) + strlen(failed_type_name);
+                                            strlen(loader1) + strlen(sel_class) + strlen(sel_class_description) +
+                                            strlen(loader2) + strlen(super_class) + strlen(super_class_description) +
+                                            strlen(failed_type_name);
               char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
               jio_snprintf(buf, buflen, msg, curr_class, method, loader1, sel_class, loader2,
-                           super_class, failed_type_name);
+                           super_class, failed_type_name, sel_class_description, super_class_description);
               THROW_MSG_(vmSymbols::java_lang_LinkageError(), buf, false);
             }
           }
         }
 

@@ -1243,24 +1246,27 @@
           if (failed_type_symbol != NULL) {
             const char* msg = "loader constraint violation in interface itable"
               " initialization for class %s: when selecting method %s the"
               " class loader %s for super interface %s, and the class"
               " loader %s of the selected method's type, %s have"
-              " different Class objects for the type %s used in the signature";
+              " different Class objects for the type %s used in the signature (%s; %s)";
             const char* current = _klass->external_name();
             const char* sig = m->name_and_sig_as_C_string();
-            const char* loader1 = java_lang_ClassLoader::describe_external(interface_loader());
-            const char* iface = InstanceKlass::cast(interf)->external_name();
-            const char* loader2 = java_lang_ClassLoader::describe_external(method_holder_loader());
+            const char* loader1 = interf->class_loader_data()->loader_name_and_id();
+            const char* iface = interf->external_name();
+            const char* iface_class_description = interf->class_in_module_of_loader(false,true);
+            const char* loader2 = target()->method_holder()->class_loader_data()->loader_name_and_id();
             const char* mclass = target()->method_holder()->external_name();
+            const char* mclass_class_description = target()->method_holder()->class_in_module_of_loader(false,true);
             const char* failed_type_name = failed_type_symbol->as_klass_external_name();
             size_t buflen = strlen(msg) + strlen(current) + strlen(sig) +
-              strlen(loader1) + strlen(iface) + strlen(loader2) + strlen(mclass) +
+                                          strlen(loader1) + strlen(iface) + strlen(iface_class_description) +
+                                          strlen(loader2) + strlen(mclass) + strlen(mclass_class_description) +
               strlen(failed_type_name);
             char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
             jio_snprintf(buf, buflen, msg, current, sig, loader1, iface,
-                         loader2, mclass, failed_type_name);
+                         loader2, mclass, failed_type_name, iface_class_description, mclass_class_description);
             THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
           }
         }
       }
 
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