#0  0x00007fbf19057618 in WTF::String::isolatedCopy() const () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#1  0x00007fbf18bcfec4 in OpaqueJSString::string() const () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#2  0x00007fbf18baae6b in JSEvaluateScript () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#3  0x00007fbf1ea98499 in sokoke_js_script_eval (js_context=js_context@entry=0x7fbe9d76f9b0, script=script@entry=0x5593f30a3a00 "(function (tags) {for (var tag in tags) {var l = document.getElementsByTagName (tag);for (var i in l) { if ((l[i].rel && l[i].rel.toLowerCase () == 'prev')  || (l[i].innerHTML  && (l[i].innerHTML.toLo"..., exception=exception@entry=0x0) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/sokoke.c:75
  70: 
  71:     if (!js_context)
  72:         js_context = temporary_context = JSGlobalContextCreateInGroup (NULL, NULL);
  73: 
  74:     js_script = JSStringCreateWithUTF8CString (script);
  75:     js_value = JSEvaluateScript (js_context, js_script,
  76:         JSContextGetGlobalObject (js_context), NULL, 0, &js_exception);
  77:     JSStringRelease (js_script);
  78: 
  79:     if (!js_value)
  80:     {
#4  0x00007fbf1ea8d4eb in midori_view_get_related_page (view=view@entry=0x5593f2fa96c0, rel=rel@entry=0x7fbf1eacc680 "prev", local=0x7fbf1ef0f072 <error: Cannot access memory at address 0x7fbf1ef0f072>) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-view.c:4720
  4715:         "{ return l[i].href; } } } return 0; })("
  4716:         "{ link:'link', a:'a' });", rel, rel, local);
  4717:     katze_assign (uri, sokoke_js_script_eval (js_context, script, NULL));
  4718:     g_free (script);
  4719:     return uri && uri[0] != '0' ? uri : NULL;
  4720: #else
  4721:     return NULL;
  4722: #endif
  4723: }
  4724: 
  4725: /**
#5  0x00007fbf1ea93d3e in midori_view_get_previous_page (view=view@entry=0x5593f2fa96c0) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-view.c:4744
  4739: 
  4740:     /* i18n: word stem of "previous page" type links, case is not important */
  4741:     return midori_view_get_related_page (view, "prev", _("previous"));
  4742: }
  4743: 
  4744: /**
  4745:  * midori_view_get_next_page
  4746:  * @view: a #MidoriView
  4747:  *
  4748:  * Determines the next sub-page in the view.
  4749:  *
#6  0x00007fbf1ea6f4bf in _midori_browser_update_interface (browser=browser@entry=0x5593f26b4100, view=view@entry=0x5593f2fa96c0) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-browser.c:297
  292: {
  293:     GtkAction* action;
  294: 
  295:     _action_set_sensitive (browser, "Back", midori_view_can_go_back (view));
  296:     _action_set_sensitive (browser, "Forward", midori_tab_can_go_forward (MIDORI_TAB (view)));
  297:     _action_set_sensitive (browser, "Previous",
  298:         midori_view_get_previous_page (view) != NULL);
  299:     _action_set_sensitive (browser, "Next",
  300:         midori_view_get_next_page (view) != NULL);
  301: 
  302:     _action_set_sensitive (browser, "AddSpeedDial", !midori_view_is_blank (view));
#7  0x00007fbf1ea6fa5a in midori_browser_switched_tab_cb (notebook=<optimized out>, old_widget=0x0, new_view=0x5593f2fa96c0, browser=0x5593f26b4100) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-browser.c:5114
  5109:     if (midori_paths_get_runtime_mode () == MIDORI_RUNTIME_MODE_APP)
  5110:         gtk_window_set_icon (GTK_WINDOW (browser), midori_view_get_icon (new_view));
  5111: 
  5112:     g_signal_emit (browser, signals[SWITCH_TAB], 0, old_widget, new_view);
  5113:     _midori_browser_set_statusbar_text (browser, new_view, NULL);
  5114:     _midori_browser_update_interface (browser, new_view);
  5115:     _midori_browser_update_progress (browser, new_view);
  5116: }
  5117: 
  5118: static void
  5119: midori_browser_notify_tab_cb (GtkWidget*     notebook,
#8  0x00007fbf1e7e5fa5 in g_closure_invoke () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007fbf1e7f7fc1 in signal_emit_unlocked_R () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007fbf1e800d5c in g_signal_emit_valist () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007fbf1e801555 in g_signal_emit_by_name () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007fbf1eab3170 in midori_notebook_page_switched (new_index=0, new_tab=0x5593f2fa96c0, self=0x5593f2a34720) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-notebook.vala:509
  504: #if HAVE_GTK3
  505:         void page_switched (Gtk.Widget new_tab, uint new_index) {
  506: #else
  507:         void page_switched (Gtk.NotebookPage new_tab, uint new_index) {
  508: #endif
  509:             tab_switched (previous, new_tab as Tab);
  510:             previous = (Midori.Tab)new_tab;
  511: 
  512:             notify["index"].disconnect (index_changed);
  513:             notify["tab"].disconnect (tab_changed);
  514:             index = (int)new_index;
#13 _midori_notebook_page_switched_gtk_notebook_switch_page (_sender=<optimized out>, page=0x5593f2fa96c0, page_num=0, self=0x5593f2a34720) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-notebook.vala:275
  270:         }
  271: 
  272: 
  273:         ~Notebook () {
  274:             notebook.size_allocate.disconnect (size_allocated);
  275:             notebook.switch_page.disconnect (page_switched);
  276:             notebook.page_reordered.disconnect (page_moved);
  277:             notebook.create_window.disconnect (window_created);
  278:         }
  279: 
  280:         /* Since: 0.5.8 */
#14 0x00007fbf1e7e5fa5 in g_closure_invoke () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007fbf1e7f7fc1 in signal_emit_unlocked_R () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007fbf1e800d5c in g_signal_emit_valist () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007fbf1e80108f in g_signal_emit () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007fbf1bde729a in gtk_notebook_switch_page (notebook=<optimized out>, page=<optimized out>) at /build/gtk+2.0-BeCHhj/gtk+2.0-2.24.30/gtk/gtknotebook.c:6200
  [Error: gtknotebook.c was not found in source tree]
#19 0x00007fbf1bdef963 in gtk_notebook_real_insert_page (notebook=0x5593f0e011b0, child=0x5593f2fa96c0, tab_label=0x5593f30d0320, menu_label=0x0, position=0) at /build/gtk+2.0-BeCHhj/gtk+2.0-2.24.30/gtk/gtknotebook.c:4439
  [Error: gtknotebook.c was not found in source tree]
#20 0x00007fbf1eab2501 in midori_notebook_insert (self=0x5593f2a34720, tab=0x5593f2fa96c0, index=-1) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-notebook.vala:340
  335:             tally.set_size_request (tab.minimized ? -1 : last_tab_size, -1);
  336:             take_incoming_uris (tally);
  337: 
  338:             /* Minimum requirements for any tab */
  339:             tab.can_focus = tab.visible = true;
  340:             notebook.insert_page (tab, tally, index);
  341:             notebook.set_tab_reorderable (tab, true);
  342:             notebook.set_tab_detachable (tab, true);
  343:             tab.destroy.connect (tab_removed);
  344:             tab.notify["minimized"].connect (tab_minimized);
  345:             count++;
#21 0x00007fbf1ea755d5 in _midori_browser_add_tab (browser=0x5593f26b4100, view=<optimized out>) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-browser.c:2051
  2046:     }
  2047:     else
  2048:         n = -1;
  2049:     katze_item_set_meta_integer (item, "append", -1);
  2050: 
  2051:     midori_notebook_insert (MIDORI_NOTEBOOK (browser->notebook), MIDORI_TAB (view), n);
  2052: 
  2053:     _midori_browser_update_actions (browser);
  2054: }
  2055: 
  2056: static void
#22 0x00007fbf1e7e5fa5 in g_closure_invoke () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007fbf1e7f856e in signal_emit_unlocked_R () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007fbf1e800d5c in g_signal_emit_valist () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007fbf1e80108f in g_signal_emit () from /tmp/apport_sandbox_5AD30j/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007fbf1ea74c18 in midori_browser_add_item (browser=0x5593f26b4100, item=item@entry=0x5593f30256d0) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/midori-browser.c:7094
  7089:     g_return_val_if_fail (MIDORI_IS_BROWSER (browser), NULL);
  7090:     g_return_val_if_fail (KATZE_IS_ITEM (item), NULL);
  7091: 
  7092:     uri = katze_item_get_uri (item);
  7093:     view = midori_view_new_with_item (item, browser->settings);
  7094:     midori_browser_add_tab (browser, view);
  7095:     midori_view_set_uri (MIDORI_VIEW (view), uri);
  7096:     return view;
  7097: }
  7098: 
  7099: /**
#27 0x00007fbf0011b203 in __lambda6_ (_data1_=0x5593f3044980) at /build/midori-miV7Xn/midori-0.5.11-ds1/extensions/tabby.vala:207
  202:                             if (delay && should_delay)
  203:                                 t_item.set_meta_integer ("delay", Midori.Delay.DELAYED);
  204:                             else
  205:                                 delay = true;
  206: 
  207:                             unowned Gtk.Widget tab = browser.add_item (t_item);
  208:                             new_tabs.add (tab);
  209: 
  210:                             u_items = u_items.next;
  211:                         }
  212:                         this.helper_reorder_tabs (new_tabs);
#28 ___lambda6__gsource_func (self=0x5593f3044980) at tabby.c:1510
  [Error: tabby.c was not found in source tree]
#29 0x00007fbf1e50f0da in g_main_context_dispatch () from /tmp/apport_sandbox_5AD30j/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fbf1e50f480 in g_main_context_iterate.isra () from /tmp/apport_sandbox_5AD30j/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fbf1e50f7a2 in g_main_loop_run () from /tmp/apport_sandbox_5AD30j/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fbf1bdcb647 in IA__gtk_main () at /build/gtk+2.0-BeCHhj/gtk+2.0-2.24.30/gtk/gtkmain.c:1282
  [Error: gtkmain.c was not found in source tree]
#33 0x00005593f0639149 in main (argc=1, argv=0x7ffe12cb9fd8) at /build/midori-miV7Xn/midori-0.5.11-ds1/midori/main.c:397