El mié, 21-01-2015 a las 03:59 -0500, Nicolas Jäger escribió:
> hi,
>
> > The GAsyncResult you're passing to
> > webkit_web_context_get_plugins_finish() is uninitialized. It's passed
> > as the second argument to your callback, so you should declare at
> > least that many parameters.
> ok, to be honnest, I don't really understand what do and from where come
> these asynchronous function. I'm just passing some pointers as you told
> me :
>
> void
> callback( WebKitWebContext *web_context
> , GAsyncResult *result
> )
> {
> GList *plugin_list, *p;
> GError *error = nullptr;
>
> plugin_list = webkit_web_context_get_plugins_finish (web_context,
> result, &error); if( error )
> {
> std::cout<< error->message << std::endl;
> exit(1);
> }
>
>
> for (p = plugin_list; p; p = p->next)
> {
> WebKitPlugin *plugin = WEBKIT_PLUGIN (p->data);
> std::cout << webkit_plugin_get_name (plugin) << std::endl;
> g_object_unref(p->data);
> }
>
> g_list_free(plugin_list);
>
> }
>
> >
> > You should also pass a GError unless you're sure you want to silence
> > errors. Something like this is typical:
> done.
>
> so now when I start the browser, I still have some error messages,
>
> Error scanning
> plugin /usr/lib/mozilla/plugins/gecko-mediaplayer-dvx.so,
> /usr/lib/webkit2gtk-4.0/WebKitPluginProcess
> returned 256 exit status Error scanning
> plugin /usr/lib/mozilla/plugins/gecko-mediaplayer-qt.so,
> /usr/lib/webkit2gtk-4.0/WebKitPluginProcess
> returned 256 exit status Error scanning
> plugin /usr/lib/mozilla/plugins/gecko-mediaplayer-rm.so,
> /usr/lib/webkit2gtk-4.0/WebKitPluginProcess
> returned 256 exit status Error scanning
> plugin /usr/lib/mozilla/plugins/mozplugger.so,
> /usr/lib/webkit2gtk-4.0/WebKitPluginProcess
> returned 256 exit statusThese errors are harmless, it's because the plugin scanner fails to get plugin information from those .so, typically because they are not NPAPI plugins. > but no more segmentation fault (I guess it was because of the nullptr). > I tested to go on several websites, I got no trouble except for one > site : YOUTUBE. No prob with dailymotion, several broadcast news > neither, just youtube! > > there a copy of the errors : > > > [BEGIN OF ERRORS] > > (WebKitWebProcess:3600): GLib-GObject-WARNING **: invalid (NULL) > pointer instance > > (WebKitWebProcess:3600): GLib-GObject-CRITICAL **: > g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' > failed 1 > 0xb4727ce3 /usr/lib/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x23) > [0xb4727ce3] 2 > 0xb473473b > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3WTF11fastReallocEPvj+0x1db) > [0xb473473b] 3 > 0xb425acaf > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC17BytecodeGenerator8generateEv+0x67f) > [0xb425acaf] 4 > 0xb457a352 > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC9CodeCache18getGlobalCodeBlockINS_24UnlinkedProgramCodeBlockENS_17ProgramExecutableEEEPT_RNS_2VMEPT0_RKNS_10SourceCodeENS_18JSParserStrictnessENS_12DebuggerModeENS_12ProfilerModeERNS_11ParserErrorE+0x5d2) > [0xb457a352] 5 > 0xb4576e2f > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC9CodeCache19getProgramCodeBlockERNS_2VMEPNS_17ProgramExecutableERKNS_10SourceCodeENS_18JSParserStrictnessENS_12DebuggerModeENS_12ProfilerModeERNS_11ParserErrorE+0x2f) > [0xb4576e2f] 6 > 0xb45d9695 > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC14JSGlobalObject22createProgramCodeBlockEPNS_9ExecStateEPNS_17ProgramExecutableEPPNS_8JSObjectE+0xf5) > [0xb45d9695] 7 > 0xb45a91c8 > /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC17ProgramExecutable26initializeGlobalPropertiesERNS_2VMEPNS_9ExecStateEPNS_7JSScopeE+0x58) > [0xb45a91c8] 8 > 0xb4453260 /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC11Interpreter7exec > 9 > 0xb458e23c /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC8evaluateEPNS_9Exe > 10 0xb5d34d78 /usr/lib/libwebkit2gtk-4.0.so.37(+0x55dd78) [0xb5d34d78] > 11 0xb5d35045 /usr/lib/libwebkit2gtk-4.0.so.37(+0x55e045) [0xb5d35045] > 12 0xb5f19564 /usr/lib/libwebkit2gtk-4.0.so.37(+0x742564) [0xb5f19564] > 13 0xb5f19da0 /usr/lib/libwebkit2gtk-4.0.so.37(+0x742da0) [0xb5f19da0] > 14 0xb5f1d046 /usr/lib/libwebkit2gtk-4.0.so.37(+0x746046) [0xb5f1d046] > 15 0xb5f1db9b /usr/lib/libwebkit2gtk-4.0.so.37(+0x746b9b) [0xb5f1db9b] > 16 0xb5f1da66 /usr/lib/libwebkit2gtk-4.0.so.37(+0x746a66) [0xb5f1da66] > 17 0xb63a0fee /usr/lib/libwebkit2gtk-4.0.so.37(+0xbc9fee) [0xb63a0fee] > 18 0xb63a1022 /usr/lib/libwebkit2gtk-4.0.so.37(+0xbca022) [0xb63a1022] > 19 0xb676b31b /usr/lib/libwebkit2gtk-4.0.so.37(+0xf9431b) [0xb676b31b] > 20 > 0xb477257f /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3WTF15GMainLoopSource1 > 21 > 0xb476e0af /usr/lib/libjavascriptcoregtk-4.0.so.18(_ZN3WTF15GMainLoopSource1 > 22 0xb476e0fc /usr/lib/libjavascriptcoregtk-4.0.so.18(+0x6a90fc) > [0xb476e0fc] 23 > 0xb48ad8d3 /usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x153) > [0xb48ad 24 0xb48adce9 /usr/lib/libglib-2.0.so.0(+0x46ce9) > [0xb48adce9] 25 > 0xb48ae099 /usr/lib/libglib-2.0.so.0(g_main_loop_run+0xf9) [0xb48ae099] > 26 0xb6f9f369 /usr/lib/libwebkit2gtk-4.0.so.37(+0x17c8369) > [0xb6f9f369] 27 > 0xb5bd7a67 /usr/lib/libwebkit2gtk-4.0.so.37(WebProcessMainUnix+0x1d7) > [0xb5b 28 > 0x80485c2 /usr/lib/webkit2gtk-4.0/WebKitWebProcess(main+0x32) > [0x80485c2] 29 0xb5635e5e /usr/lib/libc.so.6(__libc_start_main+0xde) > [0xb5635e5e] 30 0x80485ee /usr/lib/webkit2gtk-4.0/WebKitWebProcess() > [0x80485ee] > > [END OF ERRORS] > > I really have no idea how to deal with that, as you can see there is no > error from the callback function. I can see at the very first line a > story about a null pointer, do I forget to set something ? I searched > during several hours from now, but I don't have any begin of clue. The crash looks unrelated, since it's a WebProcess crash, or does it only happen when you try to get the list of plugins? > Then I wanted to switch the javascript plugins, since the word > javascript appears several times in the errors. At this point I went > here : > > https://wiki.gnome.org/Projects/WebKitGtk/ProgrammingGuide/Cookbook#Executing_JavaScript > > this section of the website seems outdated, here is my code : > > WebKitWebView* webview; > WebKitSettings *settings; > webview = WEBKIT_WEB_VIEW( webkit_web_view_new() ); > settings = webkit_settings_new (); > std::cout << webkit_settings_get_enable_javascript(settings) << > std::endl; > webkit_settings_set_enable_javascript(settings,false/*true*/); > webkit_web_view_set_settings ( webview, settings ); std::cout << > webkit_settings_get_enable_javascript(settings) << std::endl; > > now, when javascript is disabled, I can go without any error (even > without those about scanning) on youtube, but of course youtube asks me > to turn it on, and I have no video What WebKitGTK+ version? > regards, > /nicoo > _______________________________________________ > webkit-gtk mailing list > [email protected] > https://lists.webkit.org/mailman/listinfo/webkit-gtk > -- Carlos Garcia Campos http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xF3D322D0EC4582C3
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