libavcodec/mpegaudiodec.c:1302: error: Buffer Overrun L2
  Offset: [0, 3] Size: 3 by call to `l2_unscale_group`.

libavcodec/mpegaudiodec.c:1302:33: Call
1300.                                 l2_unscale_group(steps, v2        & 15, scale);
1301.                             s->sb_samples[ch][k * 12 + l + 1][i] =
1302.                                 l2_unscale_group(steps, (v2 >> 4) & 15, scale);
                                      ^
1303.                             s->sb_samples[ch][k * 12 + l + 2][i] =
1304.                                 l2_unscale_group(steps,  v2 >> 8      , scale);

libavcodec/mpegaudiodec.c:203:1: <Offset trace>
201. }
202. 
203. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
     ^
204. {
205.     int shift, mod, val;

libavcodec/mpegaudiodec.c:203:1: Global `scale_factor_modshift`
  201. }
  202. 
  203. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
       ^
  204. {
  205.     int shift, mod, val;

libavcodec/mpegaudiodec.c:207:5: Assignment
  205.     int shift, mod, val;
  206. 
  207.     shift = scale_factor_modshift[scale_factor];
           ^
  208.     mod = shift & 3;
  209.     shift >>= 2;

libavcodec/mpegaudiodec.c:208:5: Assignment
  206. 
  207.     shift = scale_factor_modshift[scale_factor];
  208.     mod = shift & 3;
           ^
  209.     shift >>= 2;
  210. 

libavcodec/mpegaudiodec.c:117:1: <Length trace>
115. { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) }
116. 
117. static const int32_t scale_factor_mult2[3][3] = {
     ^
118.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
119.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:117:1: Array declaration
  115. { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) }
  116. 
  117. static const int32_t scale_factor_mult2[3][3] = {
       ^
  118.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
  119.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:211:35: Array access: Offset: [0, 3] Size: 3 by call to `l2_unscale_group` 
  209.     shift >>= 2;
  210. 
  211.     val = (mant - (steps >> 1)) * scale_factor_mult2[steps >> 2][mod];
                                         ^
  212.     /* NOTE: at this point, 0 <= shift <= 21 */
  213.     if (shift > 0)
