K5_DEBUG_LOC
#define k5_debug_update_loc(L) ((L) = K5_DEBUG_LOC)
#define k5_mutex_init(M) k5_mutex_init_1((M), K5_DEBUG_LOC)
#define k5_mutex_finish_init(M) k5_mutex_finish_init_1((M), K5_DEBUG_LOC)
k5_mutex_lock(M), (M)->loc_last = K5_DEBUG_LOC, k5_mutex_unlock(M), \
if (_err == 0) _m->loc_last = K5_DEBUG_LOC; \
#define k5_mutex_lock(M) k5_mutex_lock_1(M, K5_DEBUG_LOC)
(M)->loc_last = K5_DEBUG_LOC, \