libavcodec/h264.c:1844: error: Buffer Overrun L2
  Offset: [min(0, `p`), 12+max(0, `p`)] (⇐ [min(0, `p`), max(0, `p`)] + [0, 12]) Size: 3 by call to `ff_svq3_luma_dc_dequant_idct_c`.

libavcodec/h264.c:1731:1: Parameter `p`
1729. }
1730. 
1731. static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
      ^
1732.                                                        int mb_type, int is_h264,
1733.                                                        int simple,

libavcodec/h264.c:1844:13: Call
1842.             }
1843.         } else if (CONFIG_SVQ3_DECODER)
1844.             ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
                  ^
1845.                                            h->mb_luma_dc[p], qscale);
1846.     }

libavcodec/svq3.c:148:10: <Offset trace>
146.     static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride };
147. 
148.     for (i = 0; i < 4; i++) {
              ^
149.         const int z0 = 13 * (input[4 * i + 0] +      input[4 * i + 2]);
150.         const int z1 = 13 * (input[4 * i + 0] -      input[4 * i + 2]);

libavcodec/svq3.c:148:10: Assignment
  146.     static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride };
  147. 
  148.     for (i = 0; i < 4; i++) {
                ^
  149.         const int z0 = 13 * (input[4 * i + 0] +      input[4 * i + 2]);
  150.         const int z1 = 13 * (input[4 * i + 0] -      input[4 * i + 2]);

libavcodec/svq3.c:140:1: <Length trace>
138. };
139. 
140. void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qp)
     ^
141. {
142.     const int qmul = svq3_dequant_coeff[qp];

libavcodec/svq3.c:140:1: Parameter `*input`
  138. };
  139. 
  140. void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qp)
       ^
  141. {
  142.     const int qmul = svq3_dequant_coeff[qp];

libavcodec/svq3.c:149:30: Array access: Offset: [min(0, p), 12+max(0, p)] (⇐ [min(0, p), max(0, p)] + [0, 12]) Size: 3 by call to `ff_svq3_luma_dc_dequant_idct_c` 
  147. 
  148.     for (i = 0; i < 4; i++) {
  149.         const int z0 = 13 * (input[4 * i + 0] +      input[4 * i + 2]);
                                    ^
  150.         const int z1 = 13 * (input[4 * i + 0] -      input[4 * i + 2]);
  151.         const int z2 =  7 *  input[4 * i + 1] - 17 * input[4 * i + 3];
