$NetBSD: patch-aa,v 1.4 2006/03/06 23:02:13 joerg Exp $

--- src/pdfobj.c.orig	2006-03-06 22:44:45.000000000 +0000
+++ src/pdfobj.c
@@ -2529,14 +2529,18 @@ pdf_compare_reference (pdf_obj *ref1, pd
   data1 = (pdf_indirect *) ref1->data;
   data2 = (pdf_indirect *) ref2->data;
 
+#define COMPARE(x,y) ((x) > (y) ? 1 : -1)
+
   if (data1->dirty != data2->dirty)
-    return (int) (data1->dirty - data2->dirty);
+    return COMPARE(data1->dirty, data2->dirty);
   if (data1->dirty_file != data2->dirty_file)
-    return (int) (data1->dirty_file - data2->dirty_file);
+    return COMPARE(data1->dirty_file, data2->dirty_file);
   if (data1->label != data2->label)
-    return (int) (data1->label - data2->label);
+    return COMPARE(data1->label, data2->label);
   if (data1->generation != data2->generation)
-    return (int) (data1->generation - data2->generation);
+    return COMPARE(data1->generation, data2->generation);
+
+#undef COMPARE
 
   return 0;
 }