---
libavfilter/avfilter.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 135b9ff..c71c046 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -587,7 +587,8 @@ int avfilter_open(AVFilterContext **filter_ctx, AVFilter
*filter, const char *in
ret->av_class = &avfilter_class;
ret->filter = filter;
ret->name = inst_name ? av_strdup(inst_name) : NULL;
- ret->priv = av_mallocz(filter->priv_size);
+ if (filter->priv_size)
+ ret->priv = av_mallocz(filter->priv_size);
ret->input_count = pad_count(filter->inputs);
if (ret->input_count) {
--
1.7.2.1
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