Function newbuffsize

lib/lua/src/lauxlib.c:535–542

** Compute new size for buffer 'B', enough to accommodate extra 'sz' ** bytes. (The test for "not big enough" also gets the case when the ** computation of 'newsize' overflows.) */

** computation of 'newsize' overflows.)
*/
static size_t newbuffsize (luaL_Buffer *B, size_t sz) {
  size_t newsize = (B->size / 2) * 3;  /* buffer size * 1.5 */
  if (l_unlikely(MAX_SIZET - sz < B->n))  /* overflow in (B->n + sz)? */
    return luaL_error(B->L, "buffer too large");
  if (newsize < B->n + sz)  /* not big enough? */
    newsize = B->n + sz;
  return newsize;
}


/*