hi everyone,
when I use
WApplication::processEvents()<file:///home/cx/software/witty-2.1.4/doc/reference/html/classWt_1_1WApplication.html#48ceb7972ef7ec0e557adf441f660f2f>to
synchronize the server and client state in the ProgressDialog, I got
some
error and the application crashed.
but sometimes, the situaiton is : the first time to call it, it can do
rightly, but the sencond time to do that after the first, it always
crashes, and valgrind info is:
......
Invalid read of size 4
==6002== at 0x41E84B6: Wt::WebRenderer::setHeaders(Wt::WebRequest&,
std::string) (WebRenderer.C:239)
==6002== by 0x41EE957:
Wt::WebRenderer::serveJavaScriptUpdate(Wt::WebRequest&) (WebRenderer.C:253)
==6002== by 0x41F04AB: Wt::WebRenderer::serveMainWidget(Wt::WebRequest&,
Wt::WebRenderer::ResponseType) (WebRenderer.C:127)
==6002== by 0x41F3B63:
Wt::WebController::render(Wt::WebSession::Handler&, Wt::CgiParser*,
Wt::WebRenderer::ResponseType, bool) (WebController.C:861)
==6002== by 0x41E3B63: Wt::WebSession::doRecursiveEventLoop(std::string
const&) (WebSession.C:451)
==6002== by 0x40F0E84: Wt::WApplication::processEvents()
(WApplication.C:780)
==6002== by 0x80B8958: PList::paCalScore() (in /var/www/cx/cx.wt)
==6002== by 0x80CE617: boost::_mfi::mf0<void, PList>::operator()(PList*)
const (in /var/www/cx/cx.wt)
......
and I very want to know the approach to show an error page when the
application instance crashes.
thanks
Regards
zhmsong
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