fa               1434 user/usertests.c   char fa[N];
fa               1468 user/usertests.c   memset(fa, 0, sizeof(fa));
fa               1476 user/usertests.c       if (i < 0 || i >= sizeof(fa)) {
fa               1480 user/usertests.c       if (fa[i]) {
fa               1484 user/usertests.c       fa[i] = 1;