@@ -21,6 +21,7 @@

 #include <string.h>

+#include "libavutil/avassert.h"

 #include "libavutil/avutil.h"

 #include "libavutil/colorspace.h"

 #include "libavutil/mem.h"

@@ -66,7 +67,11 @@ int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w, uint8_t

     uint8_t rgba_map[4] = {0};

     int i;

     const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(pix_fmt);

-    int hsub = pix_desc->log2_chroma_w;

+    int hsub;

+

+    av_assert0(pix_desc);

+

+    hsub = pix_desc->log2_chroma_w;

     *is_packed_rgba = ff_fill_rgba_map(rgba_map, pix_fmt) >= 0;