Fixed crash when printing to files under Cocoa

When we select save as PDF in the print dialog, we get a new
PMPrintSession in the printInfo object, while our stored
one is deleted, so we update the pointer to be on the safe
side

Reviewed-by: msorvig

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gui/dialogs/qprintdialog_mac.mm b/src/gui/dialogs/qprintdialog_mac.mm
index a7587b1..667fc40 100644
--- a/src/gui/dialogs/qprintdialog_mac.mm
+++ b/src/gui/dialogs/qprintdialog_mac.mm
@@ -166,6 +166,12 @@ QT_USE_NAMESPACE
         }
         // Keep us in sync with file output
         PMDestinationType dest;
+
+        // If the user selected print to file, the session has been
+        // changed behind our back and our d->ep->session object is a
+        // dangling pointer. Update it based on the "current" session
+        d->ep->session = static_cast<PMPrintSession>([d->ep->printInfo PMPrintSession]);
+
         PMSessionGetDestinationType(d->ep->session, d->ep->settings, &dest);
         if (dest == kPMDestinationFile) {
             QCFType<CFURLRef> file;