1 files changed, 10 insertions, 5 deletions
diff --git a/gr-qtgui/lib/time_sink_f_impl.h b/gr-qtgui/lib/time_sink_f_impl.h
index d011b2681e..cedef648f0 100644
--- a/gr-qtgui/lib/time_sink_f_impl.h
+++ b/gr-qtgui/lib/time_sink_f_impl.h
@@ -31,14 +31,19 @@ private:
     const pmt::pmt_t d_tag_key;
 
     int d_index, d_start, d_end;
-    std::vector<float*> d_fbuffers;
-    std::vector<double*> d_buffers;
+    std::vector<volk::vector<float>> d_fbuffers;
+    std::vector<volk::vector<double>> d_buffers;
     std::vector<std::vector<gr::tag_t>> d_tags;
 
-    int d_argc;
-    char* d_argv;
+    // Required now for Qt; argc must be greater than 0 and argv
+    // must have at least one valid character. Must be valid through
+    // life of the qApplication:
+    // http://harmattan-dev.nokia.com/docs/library/html/qt4/qapplication.html
+    char d_zero = 0;
+    int d_argc = 1;
+    char* d_argv = &d_zero;
     QWidget* d_parent;
-    TimeDisplayForm* d_main_gui;
+    TimeDisplayForm* d_main_gui = nullptr;
 
     gr::high_res_timer_type d_update_time;
     gr::high_res_timer_type d_last_time;