char *tmpsend = NULL, *tmprecv = NULL, *accumbuf = NULL, *accumbuf_free = NULL;
char *inbuf_free[2] = {NULL, NULL}, *inbuf[2] = {NULL, NULL};
ptrdiff_t true_lb, true_extent, lb, extent, max_real_segsize;
char *tmpsend = NULL, *tmprecv = NULL, *accumbuf = NULL, *accumbuf_free = NULL;
char *inbuf_free[2] = {NULL, NULL}, *inbuf[2] = {NULL, NULL};
ptrdiff_t true_lb, true_extent, lb, extent, max_real_segsize;