sasl_realloc_t
sasl_realloc_t *,
sasl_realloc_t *realloc;
(sasl_realloc_t *) &realloc,
gctx->sasl_allocation_utils.realloc = (sasl_realloc_t *)&realloc;
(sasl_realloc_t *)&realloc, (sasl_free_t *)&free},
sasl_realloc_t *r,
sasl_realloc_t *realloc;