fix crash when grid child image does not exist (#1284)

strukturag · Aug 26, 2024 · 4a3094e · 4a3094e
1 parent db04de9
commit 4a3094e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/libheif/codecs/grid.cc b/libheif/codecs/grid.cc
@@ -494,6 +494,10 @@ int ImageItem_Grid::get_luma_bits_per_pixel() const
   }
 
   auto image = get_context()->get_image(child);
+  if (!image) {
+    return -1;
+  }
+
   return image->get_luma_bits_per_pixel();
 }