libavcodec/wma.c:446: error: Integer Overflow L2
  ([0, 1] - 1):unsigned32.

libavcodec/wma.c:446:20: <LHS trace>
444.             /** normal code */
445.             offset += run_table[code];
446.             sign = get_bits1(gb) - 1;
                        ^
447.             iptr[offset & coef_mask] = ilvl[code] ^ sign<<31;
448.         } else if (code == 1) {

libavcodec/wma.c:446:20: Call
444.             /** normal code */
445.             offset += run_table[code];
446.             sign = get_bits1(gb) - 1;
                        ^
447.             iptr[offset & coef_mask] = ilvl[code] ^ sign<<31;
448.         } else if (code == 1) {

libavcodec/get_bits.h:271:1: Parameter `s->index`
  269. }
  270. 
  271. static inline unsigned int get_bits1(GetBitContext *s)
       ^
  272. {
  273.     unsigned int index = s->index;

libavcodec/get_bits.h:273:5: Assignment
  271. static inline unsigned int get_bits1(GetBitContext *s)
  272. {
  273.     unsigned int index = s->index;
           ^
  274.     uint8_t result     = s->buffer[index >> 3];
  275. #ifdef BITSTREAM_READER_LE

libavcodec/get_bits.h:276:5: Assignment
  274.     uint8_t result     = s->buffer[index >> 3];
  275. #ifdef BITSTREAM_READER_LE
  276.     result >>= index & 7;
           ^
  277.     result  &= 1;
  278. #else

libavcodec/get_bits.h:277:5: Assignment
  275. #ifdef BITSTREAM_READER_LE
  276.     result >>= index & 7;
  277.     result  &= 1;
           ^
  278. #else
  279.     result <<= index & 7;

libavcodec/get_bits.h:288:5: Assignment
  286.     s->index = index;
  287. 
  288.     return result;
           ^
  289. }
  290. 

libavcodec/wma.c:446:13: Binary operation: ([0, 1] - 1):unsigned32
444.             /** normal code */
445.             offset += run_table[code];
446.             sign = get_bits1(gb) - 1;
                 ^
447.             iptr[offset & coef_mask] = ilvl[code] ^ sign<<31;
448.         } else if (code == 1) {
