libavcodec/qtrle.c:308: error: Integer Overflow L2
  ([0, `*s->g.buffer`] - 1):unsigned32.

libavcodec/qtrle.c:298:1: <LHS trace>
296. }
297. 
298. static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change)
     ^
299. {
300.     int rle_code;

libavcodec/qtrle.c:298:1: Parameter `*s->g.buffer`
296. }
297. 
298. static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change)
     ^
299. {
300.     int rle_code;

libavcodec/qtrle.c:308:32: Call
306. 
307.     while (lines_to_change--) {
308.         pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 4;
                                    ^
309. 
310.         while ((rle_code = (signed char)bytestream2_get_byte(&s->g)) != -1) {

libavcodec/bytestream.h:96:1: Assignment
  94. DEF  (be24, 3, AV_RB24, AV_WB24)
  95. DEF  (be16, 2, AV_RB16, AV_WB16)
  96. DEF  (byte, 1, AV_RB8 , AV_WB8 )
      ^
  97. 
  98. #undef DEF

libavcodec/qtrle.c:308:9: Binary operation: ([0, *s->g.buffer] - 1):unsigned32
306. 
307.     while (lines_to_change--) {
308.         pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 4;
             ^
309. 
310.         while ((rle_code = (signed char)bytestream2_get_byte(&s->g)) != -1) {
