The variable "optlen" that's defined in the function: Java_java_net_PlainDatagramSocketImpl_socketSetOption, in the source code file: /jdk/src/solaris/native/java/net/PlainDatagramSocketImpl.c may be passed to NET_SetSockOpt at line 1582 without being initialized.

I determined that the variable IS initialized and always initialized to the very same value: sizeof(int) in every case. To prevent parfait from flagging this "error" in the future, I added a line of code that initializes optval to the value: sizeof(int) at the beginning of the procedure.

Parfait no longer detects an error.