[FFmpeg-trac] #9264(undetermined:new): libavdevice/xv.c: 317: supplying not enough memory ?

FFmpeg trac at avcodec.org
Wed May 26 18:07:07 EEST 2021


#9264: libavdevice/xv.c: 317: supplying not enough memory ?
-------------------------------------+-------------------------------------
             Reporter:  dcb          |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 libavdevice/xv.c: In function ‘write_picture’:
 libavdevice/xv.c:317:5: warning: ‘av_image_copy’ accessing 32 bytes in a
 region of size 24 [-Wstringop-overflow=]
   317 |     av_image_copy(data, img->pitches, (const uint8_t
 **)input_data, linesize,
       |
 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   318 |                   xv->image_format, img->width, img->height);
       |                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 libavdevice/xv.c:317:5: note: referencing argument 1 of type ‘uint8_t **’
 {aka ‘unsigned char **’}

 but

     uint8_t *data[3] = {
         img->data + img->offsets[0],
         img->data + img->offsets[1],
         img->data + img->offsets[2]
     };

 and

 void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],

 data has to be 4, not 3.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9264>
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