176 local struct tab *done; /* states already evaluated array */  variable
186     if (done != NULL) {  in cleanup()
188             if (done[n].len)  in cleanup()
189                 free(done[n].vec);  in cleanup()
190         free(done);  in cleanup()
274     length = done[index].len;  in beenhere()
275     if (offset < length && (done[index].vec[offset] & bit) != 0)  in beenhere()
287             vector = realloc(done[index].vec, length);  in beenhere()
289                 memset(vector + done[index].len, 0, length - done[index].len);  in beenhere()
308         done[index].len = length;  in beenhere()
309         done[index].vec = vector;  in beenhere()
313     done[index].vec[offset] |= bit;  in beenhere()
469     done = NULL;  in main()
553         done = NULL;  in main()
555              (done = calloc(size, sizeof(struct tab))) == NULL) {  in main()