src/solaris/native/java/net/PlainDatagramSocketImpl.c

@@ -1320,10 +1320,11 @@
     int level, optname, optlen;
     union {
         int i;
         char c;
     } optval;
+    optlen = sizeof(optval.i);
 
     /*
      * Check that socket hasn't been closed
      */
     fd = getFD(env, this);