The Nginx code style asks for a specific alignment of variables declarations that is strainuous to manually enforce:
size_t slen;
uint32_t hash;
ngx_int_t rc;
const u_char *p;
ngx_shm_zone_t *shm_zone;
ngx_slab_pool_t *shpool;
ngx_rbtree_node_t *node, *sentinel;
ngx_ssl_session_t *sess;