[FFmpeg-devel] [PATCH] libavfilter/vf_drawtext: Avoid undefined behavior from GET_UTF8

[Aaron Boushley]

The vf_drawtext filter uses the GET_UTF8 macro in multiple locations.
Each of these use `continue;` as the error handler. However the
documentation for the GET_UTF8 macro states "ERROR should not contain
a loop control statement which could interact with the internal while
loop, and should force an exit from the macro code (e.g. through a
goto or a return) in order to prevent undefined results."

This patch adjusts vf_drawtext to use goto error handlers similar to
other locations in ffmpeg.

Aaron
-------------- next part --------------
A non-text attachment was scrubbed...
Name: libavfilter-drawtext-avoid-undefined-behavior.patch
Type: application/octet-stream
Size: 3262 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20190726/7e57d579/attachment.obj>