libavcodec/alsdec.c:888: error: Integer Overflow L2
  ([0, -1+max(1, `*bd->opt_order`)] - 1):unsigned32 by call to `parcor_to_lpc`.

libavcodec/alsdec.c:887:14: Assignment
885.         }
886.     } else {
887.         for (k = 0; k < opt_order; k++)
                  ^
888.             parcor_to_lpc(k, quant_cof, lpc_cof);
889. 

libavcodec/alsdec.c:888:13: Call
886.     } else {
887.         for (k = 0; k < opt_order; k++)
888.             parcor_to_lpc(k, quant_cof, lpc_cof);
                 ^
889. 
890.         // store previous samples in case that they have to be altered

libavcodec/alsdec.c:481:1: <LHS trace>
479. /** Convert PARCOR coefficient k to direct filter coefficient.
480.  */
481. static void parcor_to_lpc(unsigned int k, const int32_t *par, int32_t *cof)
     ^
482. {
483.     int i, j;

libavcodec/alsdec.c:481:1: Parameter `k`
  479. /** Convert PARCOR coefficient k to direct filter coefficient.
  480.  */
  481. static void parcor_to_lpc(unsigned int k, const int32_t *par, int32_t *cof)
       ^
  482. {
  483.     int i, j;

libavcodec/alsdec.c:485:17: Binary operation: ([0, -1+max(1, *bd->opt_order)] - 1):unsigned32 by call to `parcor_to_lpc` 
  483.     int i, j;
  484. 
  485.     for (i = 0, j = k - 1; i < j; i++, j--) {
                       ^
  486.         int tmp1 = ((MUL64(par[k], cof[j]) + (1 << 19)) >> 20);
  487.         cof[j]  += ((MUL64(par[k], cof[i]) + (1 << 19)) >> 20);
