[FFmpeg-devel] [PATCH 19/25] avcodec/utils: Remove always-true check

Andreas Rheinhardt andreas.rheinhardt at gmail.com
Sat Sep 26 13:27:58 EEST 2020


The first thing avcodec_open2() allocates is the AVCodecInternal. If
allocating it fails, a jump to end occurs; but if an error happens after
its allocation, a jump to free_and_end happens which frees all
allocations performed so far and then jumps to end. Yet free_and_end
contained a check for AVCodecInternal (after having already dereferenced
it to check whether ff_thread_free() needs to be called) which is of
course always true. So remove it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
 libavcodec/utils.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 94b9e94584..8e7c3125aa 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1043,7 +1043,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
     av_dict_free(&tmp);
     av_freep(&avctx->priv_data);
     av_freep(&avctx->subtitle_header);
-    if (avci) {
+
         av_frame_free(&avci->to_free);
         av_frame_free(&avci->compat_decode_frame);
         av_frame_free(&avci->buffer_frame);
@@ -1056,7 +1056,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
         av_bsf_free(&avci->bsf);
 
         av_buffer_unref(&avci->pool);
-    }
     av_freep(&avci);
     avctx->internal = NULL;
     avctx->codec = NULL;
-- 
2.25.1



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