libavcodec/mpegaudiodec.c:1237: error: Buffer Overrun L2
  Offset: [0, 3] Size: 3 by call to `l2_unscale_group`.

libavcodec/mpegaudiodec.c:1237:33: Call
1235.                             v = v / steps;
1236.                             s->sb_samples[ch][k * 12 + l + 1][i] =
1237.                                 l2_unscale_group(steps, v % steps, scale);
                                      ^
1238.                             v = v / steps;
1239.                             s->sb_samples[ch][k * 12 + l + 2][i] =

libavcodec/mpegaudiodec.c:193:1: <Offset trace>
191. }
192. 
193. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
     ^
194. {
195.     int shift, mod, val;

libavcodec/mpegaudiodec.c:193:1: Global `scale_factor_modshift`
  191. }
  192. 
  193. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
       ^
  194. {
  195.     int shift, mod, val;

libavcodec/mpegaudiodec.c:197:5: Assignment
  195.     int shift, mod, val;
  196. 
  197.     shift = scale_factor_modshift[scale_factor];
           ^
  198.     mod = shift & 3;
  199.     shift >>= 2;

libavcodec/mpegaudiodec.c:198:5: Assignment
  196. 
  197.     shift = scale_factor_modshift[scale_factor];
  198.     mod = shift & 3;
           ^
  199.     shift >>= 2;
  200. 

libavcodec/mpegaudiodec.c:107:1: <Length trace>
105. { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) }
106. 
107. static const int32_t scale_factor_mult2[3][3] = {
     ^
108.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
109.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:107:1: Array declaration
  105. { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) }
  106. 
  107. static const int32_t scale_factor_mult2[3][3] = {
       ^
  108.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
  109.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:201:35: Array access: Offset: [0, 3] Size: 3 by call to `l2_unscale_group` 
  199.     shift >>= 2;
  200. 
  201.     val = (mant - (steps >> 1)) * scale_factor_mult2[steps >> 2][mod];
                                         ^
  202.     /* NOTE: at this point, 0 <= shift <= 21 */
  203.     if (shift > 0)
