core/qt/flash-crash-backport.patch
2010-07-28 00:47:13 +00:00

47 lines
1.8 KiB
Diff

--- a/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp
+++ b/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp
@@ -34,6 +34,8 @@
#include <wtf/text/CString.h>
namespace WebCore {
+
+typedef void gtkInitFunc(int *argc, char ***argv);
bool PluginPackage::fetchInfo()
{
@@ -109,6 +111,7 @@ bool PluginPackage::load()
NP_InitializeFuncPtr NP_Initialize;
NPError npErr;
+ gtkInitFunc* gtkInit;
NP_Initialize = (NP_InitializeFuncPtr)m_module->resolve("NP_Initialize");
m_NPP_Shutdown = (NPP_ShutdownProcPtr)m_module->resolve("NP_Shutdown");
@@ -127,6 +130,26 @@ bool PluginPackage::load()
m_browserFuncs.getvalue = staticPluginQuirkRequiresGtkToolKit_NPN_GetValue;
}
+ // WORKAROUND: Prevent gtk based plugin crashes such as BR# 40567 by
+ // explicitly forcing the initializing of Gtk, i.e. calling gtk_init,
+ // whenver the symbol is present in the plugin library loaded above.
+ // Note that this workaround is based on code from the NSPluginClass ctor
+ // in KDE's kdebase/apps/nsplugins/viewer/nsplugin.cpp file.
+ gtkInit = (gtkInitFunc*)m_module->resolve("gtk_init");
+ if (gtkInit) {
+ // Prevent gtk_init() from replacing the X error handlers, since the Gtk
+ // handlers abort when they receive an X error, thus killing the viewer.
+#ifdef Q_WS_X11
+ int (*old_error_handler)(Display*, XErrorEvent*) = XSetErrorHandler(0);
+ int (*old_io_error_handler)(Display*) = XSetIOErrorHandler(0);
+#endif
+ gtkInit(0, 0);
+#ifdef Q_WS_X11
+ XSetErrorHandler(old_error_handler);
+ XSetIOErrorHandler(old_io_error_handler);
+#endif
+ }
+
#if defined(XP_UNIX)
npErr = NP_Initialize(&m_browserFuncs, &m_pluginFuncs);
#else