--- old/hotspot/src/share/vm/runtime/arguments.cpp 2014-12-12 14:55:52.525522211 -0800 +++ new/hotspot/src/share/vm/runtime/arguments.cpp 2014-12-12 14:55:52.413522210 -0800 @@ -2986,17 +2986,20 @@ #endif // -D } else if (match_option(option, "-D", &tail)) { - if (match_option(option, "-Djava.endorsed.dirs=", &tail)) { + const char* value; + if (match_option(option, "-Djava.endorsed.dirs=", &value) && + *value!= '\0' && strcmp(value, "\"\"") != 0) { // abort if -Djava.endorsed.dirs is set jio_fprintf(defaultStream::output_stream(), - "-Djava.endorsed.dirs is not supported. Endorsed standards and standalone APIs\n" - "in modular form will be supported via the concept of upgradeable modules.\n"); + "-Djava.endorsed.dirs=%s is not supported. Endorsed standards and standalone APIs\n" + "in modular form will be supported via the concept of upgradeable modules.\n", value); return JNI_EINVAL; } - if (match_option(option, "-Djava.ext.dirs=", &tail)) { + if (match_option(option, "-Djava.ext.dirs=", &value) && + *value != '\0' && strcmp(value, "\"\"") != 0) { // abort if -Djava.ext.dirs is set jio_fprintf(defaultStream::output_stream(), - "-Djava.ext.dirs is not supported. Use -classpath instead.\n"); + "-Djava.ext.dirs=%s is not supported. Use -classpath instead.\n", value); return JNI_EINVAL; }