libavcodec/qtrle.c:126: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32.

libavcodec/qtrle.c:108:1: <LHS trace>
106. }
107. 
108. static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
     ^
109.                                        int lines_to_change, int bpp)
110. {

libavcodec/qtrle.c:108:1: Parameter `*s->g.buffer_end`
106. }
107. 
108. static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
     ^
109.                                        int lines_to_change, int bpp)
110. {

libavcodec/qtrle.c:123:41: Call
121.         CHECK_PIXEL_PTR(0);
122. 
123.         while ((rle_code = (signed char)bytestream2_get_byte(&s->g)) != -1) {
                                             ^
124.             if (rle_code == 0) {
125.                 /* there's another skip code in the stream */

libavcodec/bytestream.h:94:1: Parameter `*g->buffer`
  92. DEF(unsigned int, be24, 3, AV_RB24, AV_WB24)
  93. DEF(unsigned int, be16, 2, AV_RB16, AV_WB16)
  94. DEF(unsigned int, byte, 1, AV_RB8 , AV_WB8)
      ^
  95. 
  96. #if HAVE_BIGENDIAN

libavcodec/qtrle.c:126:45: Call
124.             if (rle_code == 0) {
125.                 /* there's another skip code in the stream */
126.                 pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1));
                                                 ^
127.                 CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
128.             } else if (rle_code < 0) {

libavcodec/bytestream.h:94:1: Assignment
  92. DEF(unsigned int, be24, 3, AV_RB24, AV_WB24)
  93. DEF(unsigned int, be16, 2, AV_RB16, AV_WB16)
  94. DEF(unsigned int, byte, 1, AV_RB8 , AV_WB8)
      ^
  95. 
  96. #if HAVE_BIGENDIAN

libavcodec/qtrle.c:126:17: Binary operation: ([0, +oo] - 1):unsigned32
124.             if (rle_code == 0) {
125.                 /* there's another skip code in the stream */
126.                 pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1));
                     ^
127.                 CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
128.             } else if (rle_code < 0) {
