Critical error detected

[Sodininikas]

Hello, writing code like this:

using namespace SimpleMail;

SimpleMail::Sender smtp("smtp.gmail.com", 465, SimpleMail::Sender::SslConnection);
smtp.setUser("[e-mail]");
smtp.setPassword("password");
MimeMessage message;
message.setSender(EmailAddress("[e-mail]", "username"));
message.addTo(EmailAddress("[e-mail]", "username"));
message.setSubject("SmtpClient for Qt - Demo");
if (!smtp.sendMail(message)) {
	qDebug() << "Failed to send mail!" << smtp.lastError();
}
smtp.quit();

And always getting Critical error detected c0000374 - C++. Email is send successful, but after that error occurs. Where could problem be?

[Daniel Nicoletti]

Hard to tell without a backtrace.