The Dink Network

/* store current procedure arguments expanded values of type 'int' (see get_parms) */
static long nlist[10];

Change long to int! A long takes up 8 bytes on a Linux 64bit system and an int uses 4 bytes. Thus, the entire array takes up 80 bytes. However, the code here

/* Clean-up parameters */
memset(nlist, 0, 10 * sizeof (int));

Only cleans up 40 bytes (10 * sizeof(int) = 10 * 4 = 40). So the last 5 elements of the array never get cleared. This is what robj observed when he suggested that only explicitly passing '0' in a function may "fix" it.

In conclusion, robj's dmod is NOT to blame.