MAX_DEPTH
#define MAX_DEPTH 20 /* how deep to recurse */
#define MAX_DEPTH 1000 /* how deep to recurse */
#define MAX_DEPTH 32
#define MAX_DEPTH 24
#define MAX_DEPTH 24
#define MAX_DEPTH 25 /* maximum depth level */
#define MAX_DEPTH 50
#define MAX_DEPTH 50