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lavc/options: fix shallow copy context
avcodec_copy_context leaves shallow copy of string/binary/dict options. Double free/accessing freed memory may occur. Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
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@@ -187,6 +187,7 @@ int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
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av_opt_free(dest);
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memcpy(dest, src, sizeof(*dest));
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av_opt_copy(dest, src);
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dest->priv_data = orig_priv_data;
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