From 316d0c35a18970c49760f518f22b16c2073ab5b2 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 27 Jul 2019 11:39:43 +0530
Subject: [PATCH] ...

---
 src/calibre/utils/podofo/fonts.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/utils/podofo/fonts.cpp b/src/calibre/utils/podofo/fonts.cpp
index cc9b59707b..8fc135e5e5 100644
--- a/src/calibre/utils/podofo/fonts.cpp
+++ b/src/calibre/utils/podofo/fonts.cpp
@@ -399,6 +399,7 @@ dedup_type3_fonts(PDFDoc *self, PyObject *args) {
 
     PdfVecObjects &objects = self->doc->GetObjects();
     for (auto &k : objects) {
+        if (!k->IsDictionary()) continue;
         const PdfDictionary &dict = k->GetDictionary();
         if (dictionary_has_key_name(dict, PdfName::KeyType, "Font")) {
             const std::string &font_type = dict.GetKey(PdfName::KeySubtype)->GetName().GetName();