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From 4f478daa6a9734b8f269a6586bdce2909844bb6f Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Wed, 23 Dec 2020 23:52:58 +0100
Subject: Fix opening files by some generators that are a bit broken

But Adobe opens it and it's easy to fix

diff --git a/poppler/XRef.cc b/poppler/XRef.cc
index 66d3f04a..c36c747a 100644
--- a/poppler/XRef.cc
+++ b/poppler/XRef.cc
@@ -45,6 +45,7 @@
 #include <cctype>
 #include <climits>
 #include <cfloat>
+#include <limits>
 #include "goo/gfile.h"
 #include "goo/gmem.h"
 #include "Object.h"
@@ -793,8 +794,13 @@ bool XRef::readXRefStreamSection(Stream *xrefStr, const int *w, int first, int n
             gen = (gen << 8) + c;
         }
         if (gen > INT_MAX) {
-            error(errSyntaxError, -1, "Gen inside xref table too large (bigger than INT_MAX)");
-            return false;
+            if (i == 0 && gen == std::numeric_limits<uint32_t>::max()) {
+                // workaround broken generators
+                gen = 65535;
+            } else {
+                error(errSyntaxError, -1, "Gen inside xref table too large (bigger than INT_MAX)");
+                return false;
+            }
         }
         if (entries[i].offset == -1) {
             switch (type) {