From: Jun Zhao <barryjz...@tencent.com>
ff_merge_samplerates will be deallocate a or b in some case, so
add a check before free the format.
Signed-off-by: Jun Zhao <barryjz...@tencent.com>
---
libavfilter/avfiltergraph.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index a149f8f..2fe4f0b 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -419,8 +419,10 @@ static int can_merge_formats(AVFilterFormats *a_arg,
av_freep(&ret);
return 1;
} else {
- av_freep(&a->formats);
- av_freep(&b->formats);
+ if (a)
+ av_freep(&a->formats);
+ if (b)
+ av_freep(&b->formats);
av_freep(&a);
av_freep(&b);
return 0;
--
1.7.1
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