libavcodec/wmaprodec.c:844: error: Integer Overflow L2
  ([0, 1] - 1):unsigned32.

libavcodec/wmaprodec.c:844:33: <LHS trace>
842.         for (i = 0; i < 4; i++) {
843.             if (vals[i]) {
844.                 uint32_t sign = get_bits1(&s->gb) - 1;
                                     ^
845.                 AV_WN32A(&ci->coeffs[cur_coeff], vals[i] ^ sign << 31);
846.                 num_zeros = 0;

libavcodec/wmaprodec.c:844:33: Call
842.         for (i = 0; i < 4; i++) {
843.             if (vals[i]) {
844.                 uint32_t sign = get_bits1(&s->gb) - 1;
                                     ^
845.                 AV_WN32A(&ci->coeffs[cur_coeff], vals[i] ^ sign << 31);
846.                 num_zeros = 0;

libavcodec/get_bits.h:255:1: Parameter `s->index`
  253. }
  254. 
  255. static inline unsigned int get_bits1(GetBitContext *s)
       ^
  256. {
  257.     unsigned int index = s->index;

libavcodec/get_bits.h:257:5: Assignment
  255. static inline unsigned int get_bits1(GetBitContext *s)
  256. {
  257.     unsigned int index = s->index;
           ^
  258.     uint8_t result = s->buffer[index>>3];
  259. #ifdef BITSTREAM_READER_LE

libavcodec/get_bits.h:260:5: Assignment
  258.     uint8_t result = s->buffer[index>>3];
  259. #ifdef BITSTREAM_READER_LE
  260.     result >>= index & 7;
           ^
  261.     result &= 1;
  262. #else

libavcodec/get_bits.h:261:5: Assignment
  259. #ifdef BITSTREAM_READER_LE
  260.     result >>= index & 7;
  261.     result &= 1;
           ^
  262. #else
  263.     result <<= index & 7;

libavcodec/get_bits.h:272:5: Assignment
  270.     s->index = index;
  271. 
  272.     return result;
           ^
  273. }
  274. 

libavcodec/wmaprodec.c:844:17: Binary operation: ([0, 1] - 1):unsigned32
842.         for (i = 0; i < 4; i++) {
843.             if (vals[i]) {
844.                 uint32_t sign = get_bits1(&s->gb) - 1;
                     ^
845.                 AV_WN32A(&ci->coeffs[cur_coeff], vals[i] ^ sign << 31);
846.                 num_zeros = 0;
