--- filter/pdftopdf/qpdf_pdftopdf_processor_old.cc	2012-09-14 02:13:33.000000000 +0200
+++ filter/pdftopdf/qpdf_pdftopdf_processor.cc	2012-09-14 02:29:17.000000000 +0200
@@ -464,9 +464,9 @@
 void QPDF_PDFTOPDF_Processor::setComments(const std::vector<std::string> &comments) // {{{
 {
   extraheader.clear();
-  for (auto &it : comments) {
-    assert(it.at(0)=='%');
-    extraheader.append(it);
+  for (std::vector<std::string>::const_iterator it = comments.begin(); it != comments.end(); ++it) {
+    assert(it->at(0)=='%');
+    extraheader.append(*it);
     extraheader.push_back('\n');
   }
 }