libavcodec/vp9dsp.c:864: error: Buffer Overrun L2
  Offset added: [16, 46] (⇐ [0, 15] + [16, 31]) Size: 31.

libavcodec/vp9dsp.c:864:1: <Offset trace>
862. def_vert_left(8)
863. def_vert_left(16)
864. def_vert_left(32)
     ^
865. 
866. static void hor_up_4x4_c(uint8_t *dst, ptrdiff_t stride,

libavcodec/vp9dsp.c:864:1: Assignment
862. def_vert_left(8)
863. def_vert_left(16)
864. def_vert_left(32)
     ^
865. 
866. static void hor_up_4x4_c(uint8_t *dst, ptrdiff_t stride,

libavcodec/vp9dsp.c:864:1: <Length trace>
862. def_vert_left(8)
863. def_vert_left(16)
864. def_vert_left(32)
     ^
865. 
866. static void hor_up_4x4_c(uint8_t *dst, ptrdiff_t stride,

libavcodec/vp9dsp.c:864:1: Array declaration
862. def_vert_left(8)
863. def_vert_left(16)
864. def_vert_left(32)
     ^
865. 
866. static void hor_up_4x4_c(uint8_t *dst, ptrdiff_t stride,

libavcodec/vp9dsp.c:864:1: Array access: Offset added: [16, 46] (⇐ [0, 15] + [16, 31]) Size: 31
862. def_vert_left(8)
863. def_vert_left(16)
864. def_vert_left(32)
     ^
865. 
866. static void hor_up_4x4_c(uint8_t *dst, ptrdiff_t stride,
