"Failed to open file" warning with Qt 5.10

[The-Compiler]

After upgrading to Qt 5.10, I noticed this (with e.g. --temp-basedir):

[0103/104952.523679:WARNING:stack_trace_posix.cc(648)] Failed to open file: /home/florian/#14750431 (deleted)
  Error: No such file or directory

It looks like it's coming from Chromium, but I'm not sure what causes it, I can't see it with e.g. QupZilla it seems?

---

Note: This is just a harmless warning which can be ignored - if you have some other issue, that's separate and unrelated to this warning.

[lahwaacz]

I'm also getting a similar warning:

[0116/133327.700515:WARNING:stack_trace_posix.cc(648)] Failed to open file: /tmp/.gl4KTWEs (deleted)
  Error: No such file or directory

See also the qutebrowser --version output in #3447.

[urbainvaes]

I'm also getting this warning, with this output of qutebrowser --version:

qutebrowser v1.1.1
Git commit: 
Backend: QtWebEngine (Chromium 61.0.3163.140)

CPython: 3.6.4
Qt: 5.10.1
PyQt: 5.10

sip: 4.19.7
colorama: 0.3.9
pypeg2: 2.15
jinja2: 2.10
pygments: 2.2.0
yaml: 3.12
cssutils: no
attr: 17.4.0
PyQt5.QtWebEngineWidgets: yes
PyQt5.QtWebKitWidgets: yes
pdf.js: no
sqlite: 3.22.0
QtNetwork SSL: OpenSSL 1.1.0g  2 Nov 2017

Style: QFusionStyle
Platform: Linux-4.15.5-1-ARCH-x86_64-with-arch, 64bit
Linux distribution: Arch Linux (arch)
Frozen: False
Imported from /usr/lib/python3.6/site-packages/qutebrowser
Qt library executable path: /usr/lib/qt/libexec, data path: /usr/share/qt

Paths:
cache: /home/urbain/.cache/qutebrowser
config: /home/urbain/.config/qutebrowser
data: /home/urbain/.local/share/qutebrowser
runtime: /run/user/1000/qutebrowser
system data: /usr/share/qutebrowser

In my case the browser does not open because of it. Is there a workaround to make it work?

[The-Compiler]

In my case the browser does not open because of it. Is there a workaround to make it work?

That's most likely unrelated to the issue. I'd suggest you drop by in the IRC channel to track down what's happening.

[The-Compiler]

Someone else reported this upstream as QTBUG-68547.

[legallyrobert]

Is there any fix for this issue? I followed the issue upstream and found nothing.

Trying to run on a fresh arch install, I've tried both building from source and pacman install.

[The-Compiler]

It's a harmless warning.

[lahwaacz]

And the upstream bug says "Fix Version/s: 5.12.0 Beta 1"...

[tallero]

What is the latest stable version of QtWebEngine?

[The-Compiler]

@tallero that seems unrelated to this issue, and is something you could easily look up yourself (5.11.2)

[tallero]

I asked because the upstream bug includes a patch which is included in 5.12 Beta 1.

Since QtWebEngine apparently does not have its own official development page on which one can check the latest version page apart from this repo, which (is probably a mirror and) has both 5.12 and 5.12.0 branches, I was just wondering if I am just getting an old version from my distro.

The repo even has a 5.11.3 branch!
I think you can safely close the bug if it is corrected in a developer version of qtwebengine.

[The-Compiler]

QtWebEngine is released together with Qt itself - the branches are for upcoming versions, you might want to look at the tags instead. The bug already is closed. 😉

[tallero]

Sorry! I thought I could not post in closed bugs!