ffmpeg | branch: master | Zhao Zhili <zhilizhao@tencent.com> | Thu Nov 21 15:08:18 2019 +0800| [19956d01ccf1aca2902e8192c8768903cee3be06] | committer: Michael Niedermayer libavdevice/lavfi: check avfilter_graph_dump return value Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=19956d01ccf1aca290...

libavdevice/lavfi.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/libavdevice/lavfi.c b/libavdevice/lavfi.c index ca8f05f3f7..c949ff7e12 100644 --- a/libavdevice/lavfi.c +++ b/libavdevice/lavfi.c @@ -302,9 +302,13 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx) if (lavfi->dump_graph) { char *dump = avfilter_graph_dump(lavfi->graph, lavfi->dump_graph); - fputs(dump, stderr); - fflush(stderr); - av_free(dump); + if (dump != NULL) { + fputs(dump, stderr); + fflush(stderr); + av_free(dump); + } else { + FAIL(AVERROR(ENOMEM)); + } } /* fill each stream with the information in the corresponding sink */