libavcodec/mpegaudiodec.c:1313: error: Buffer Overrun L2
  Offset: [0, 3] Size: 3 by call to `l2_unscale_group`.

libavcodec/mpegaudiodec.c:1313:33: Call
1311.                             steps = ff_mpa_quant_steps[qindex];
1312.                             s->sb_samples[ch][k * 12 + l + 0][i] =
1313.                                 l2_unscale_group(steps, v % steps, scale);
                                      ^
1314.                             v = v / steps;
1315.                             s->sb_samples[ch][k * 12 + l + 1][i] =

libavcodec/mpegaudiodec.c:207:1: <Offset trace>
205. }
206. 
207. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
     ^
208. {
209.     int shift, mod, val;

libavcodec/mpegaudiodec.c:207:1: Global `scale_factor_modshift`
  205. }
  206. 
  207. static inline int l2_unscale_group(int steps, int mant, int scale_factor)
       ^
  208. {
  209.     int shift, mod, val;

libavcodec/mpegaudiodec.c:211:5: Assignment
  209.     int shift, mod, val;
  210. 
  211.     shift = scale_factor_modshift[scale_factor];
           ^
  212.     mod = shift & 3;
  213.     shift >>= 2;

libavcodec/mpegaudiodec.c:212:5: Assignment
  210. 
  211.     shift = scale_factor_modshift[scale_factor];
  212.     mod = shift & 3;
           ^
  213.     shift >>= 2;
  214. 

libavcodec/mpegaudiodec.c:121:1: <Length trace>
119. { FIXR(1.0 * (v)), FIXR(0.7937005259 * (v)), FIXR(0.6299605249 * (v)) }
120. 
121. static const int32_t scale_factor_mult2[3][3] = {
     ^
122.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
123.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:121:1: Array declaration
  119. { FIXR(1.0 * (v)), FIXR(0.7937005259 * (v)), FIXR(0.6299605249 * (v)) }
  120. 
  121. static const int32_t scale_factor_mult2[3][3] = {
       ^
  122.     SCALE_GEN(4.0 / 3.0), /* 3 steps */
  123.     SCALE_GEN(4.0 / 5.0), /* 5 steps */

libavcodec/mpegaudiodec.c:215:35: Array access: Offset: [0, 3] Size: 3 by call to `l2_unscale_group` 
  213.     shift >>= 2;
  214. 
  215.     val = (mant - (steps >> 1)) * scale_factor_mult2[steps >> 2][mod];
                                         ^
  216.     /* NOTE: at this point, 0 <= shift <= 21 */
  217.     if (shift > 0)
