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Bug#910500: marked as done (libqt5quick5: Sefault in applications using QWebEngineView)

Your message dated Fri, 2 Nov 2018 18:19:53 +0300
with message-id <20181102151953.GA13979@mitya57.me>
and subject line Re: Bug#910317: QtWebEngine in unstable is constantly crashing
has caused the Debian Bug report #910317,
regarding libqt5quick5: Sefault in applications using QWebEngineView
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
910317: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=910317
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: libqt5quick5
Version: 5.11.1-6
Severity: important

Hi,

I have a simple Qt application that's been segfaulting ever since
libqt5quick5 has been updated to 5.11.1-6. The crash does not happen
with 5.11.1-5, so I assume the problem is caused by the unaligned
memory access fix that's been backported.

See the following example to reproduce the problem. The crash may
happen while scrolling the page, if not as soon as page is loaded.
Not all the webpages can trigger the bug.

I can provide more info in case the example is not enough to
reproduce the problem.

Regards,
Gabriele

---
$ cat main.cpp
#include <QApplication>
#include <QWebEngineView>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QWebEngineView view;
    view.setUrl(QUrl("https://www.qt.io";));
    view.resize(1024, 750);
    view.show();

    return app.exec();
}

$ cat example.pro
TEMPLATE = app

QT += webenginewidgets

SOURCES += main.cpp

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-00081-g078ad232623b (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5quick5 depends on:
ii  libc6                                  2.27-6
ii  libqt5core5a [qtbase-abi-5-11-0]       5.11.1+dfsg-9
ii  libqt5gui5                             5.11.1+dfsg-9
ii  libqt5network5                         5.11.1+dfsg-9
ii  libqt5qml5 [qtdeclarative-abi-5-11-0]  5.11.1-6
ii  libstdc++6                             8.2.0-7

libqt5quick5 recommends no packages.

libqt5quick5 suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Version: 5.11.2+dfsg-1

On Thu, Oct 18, 2018 at 03:42:58PM +0300, Dmitry Shachnev wrote:
> I cannot reproduce this crash with 5.11.2 packages (now in unstable).
>
> Are you sure you are getting the same crash, maybe the stacktrace is a
> different one? Did you try to use the debugger to get stacktrace?
>
> In any case please paste the URL of page where Falkon is crashing, or
> attach the C++ example if you have it.

I just tried the original Python example with the latest packages from
unstable, and it does not crash anymore. So closing this bug.

If you still experience crashes then file a new bug with a fresh stacktrace.

--
Dmitry Shachnev

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