libavcodec/wmaprodec.c:835: error: Integer Overflow L2
  ([0, 1] - 1):unsigned32.

libavcodec/wmaprodec.c:835:28: <LHS trace>
833.         for (i = 0; i < 4; i++) {
834.             if (vals[i]) {
835.                 int sign = get_bits1(&s->gb) - 1;
                                ^
836.                 *(uint32_t*)&ci->coeffs[cur_coeff] = vals[i] ^ sign<<31;
837.                 num_zeros = 0;

libavcodec/wmaprodec.c:835:28: Call
833.         for (i = 0; i < 4; i++) {
834.             if (vals[i]) {
835.                 int sign = get_bits1(&s->gb) - 1;
                                ^
836.                 *(uint32_t*)&ci->coeffs[cur_coeff] = vals[i] ^ sign<<31;
837.                 num_zeros = 0;

libavcodec/get_bits.h:311:1: Parameter `s->index`
  309. }
  310. 
  311. static inline unsigned int get_bits1(GetBitContext *s){
       ^
  312. #ifdef ALT_BITSTREAM_READER
  313.     unsigned int index = s->index;

libavcodec/get_bits.h:313:5: Assignment
  311. static inline unsigned int get_bits1(GetBitContext *s){
  312. #ifdef ALT_BITSTREAM_READER
  313.     unsigned int index = s->index;
           ^
  314.     uint8_t result = s->buffer[index>>3];
  315. #ifdef ALT_BITSTREAM_READER_LE

libavcodec/get_bits.h:316:5: Assignment
  314.     uint8_t result = s->buffer[index>>3];
  315. #ifdef ALT_BITSTREAM_READER_LE
  316.     result >>= index & 7;
           ^
  317.     result &= 1;
  318. #else

libavcodec/get_bits.h:317:5: Assignment
  315. #ifdef ALT_BITSTREAM_READER_LE
  316.     result >>= index & 7;
  317.     result &= 1;
           ^
  318. #else
  319.     result <<= index & 7;

libavcodec/get_bits.h:325:5: Assignment
  323.     s->index = index;
  324. 
  325.     return result;
           ^
  326. #else
  327.     return get_bits(s, 1);

libavcodec/wmaprodec.c:835:17: Binary operation: ([0, 1] - 1):unsigned32
833.         for (i = 0; i < 4; i++) {
834.             if (vals[i]) {
835.                 int sign = get_bits1(&s->gb) - 1;
                     ^
836.                 *(uint32_t*)&ci->coeffs[cur_coeff] = vals[i] ^ sign<<31;
837.                 num_zeros = 0;
