Check avio_printf value and len from avio_close_dyn_buf, it should
incorrect if they are not equal each other.
Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
---
fftools/ffmpeg_filter.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
index 452b689d62..ceb08b44f1 100644
--- a/fftools/ffmpeg_filter.c
+++ b/fftools/ffmpeg_filter.c
@@ -105,6 +105,7 @@ static char *choose_pix_fmts(OutputFilter *ofilter)
AVIOContext *s = NULL;
uint8_t *ret;
int len;
+ int name_new_size = 0;
if (avio_open_dyn_buf(&s) < 0)
exit_program(1);
@@ -116,9 +117,11 @@ static char *choose_pix_fmts(OutputFilter *ofilter)
for (; *p != AV_PIX_FMT_NONE; p++) {
const char *name = av_get_pix_fmt_name(*p);
- avio_printf(s, "%s|", name);
+ name_new_size = avio_printf(s, "%s|", name);
}
len = avio_close_dyn_buf(s, &ret);
+ if (len != name_new_size)
+ return NULL;
ret[len - 1] = 0;
return ret;
} else
--
2.25.0
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