https://bugs.kde.org/show_bug.cgi?id=503216

            Bug ID: 503216
           Summary: Adding Reddit page to Falkon speeddial make it crash
    Classification: Applications
           Product: Falkon
           Version: 25.04.0
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-b...@kde.org
          Reporter: x...@x-s.com.pl
  Target Milestone: ---

Application: falkon (25.04.0)

ApplicationNotResponding [ANR]: false
Qt Version: 6.9.0
Frameworks Version: 6.13.0
Operating System: Linux 6.14.2-300.fc42.x86_64 x86_64
Windowing System: Wayland
Distribution: "Fedora Linux 42 (KDE Plasma Desktop Edition)"
DrKonqi: 6.3.4 [CoredumpBackend]

-- Information about the crash:
I can quite reliably crash Falkon by adding reddit (https://www.reddit.com/) to
speeddial. It spins for about 20-30s like it's trying to build thumbnail image
then crash occurs.
All other pages I've tried to add seem to be fine, so far its only reddit that
causes crash.
Steps to reproduce:

 1. load reddit page you want to add in one tab.
 2. open new tab with speeddial, rightclick to open context menu, select 'Add
new page'
 3. switch back to reddit tab, copy address, then switch to tab with speeddial.
 4. paste address in address field, check 'read title from page' box, hit
apply.

Expected result:
 - Spinner on new page  placeholder gets replaced by page thumbnail
 - new page is added to speeddial

Actual result:
 - whole browser crashes
 - on next start, speeddial, has no reddit page added.

Notes:
It also happens on fresh Falkon config (for test I've moved ~/.config/falkon
~/.config/falkonrc and ~/.local/share/falkon to other location) .
There was one case where I've managed to add reddit page to speeddial. I'm not
sure how, but in that case somehow add page dialog got cancelled. On next try
speeddial context menu had no 'add page' item so I've opened speedial settings
applied it with no changes, possibly opened some other page settings and closed
it with no changes, then refreshed whole speeddial tab. Once I got 'add page
back, I've just pasted address to the address field from clipboard and put name
in the box (read name from page remained unchecked). Reddit page appeared on
speeddial and the thumbnail was ok. I've edited page settings to read title
from page, hit apply and it still worked.


Software specs:
Fedora 42 x64
Plasma 6.3.4
KF6 6.13.0
Qt: 6.9.0
falkon-25.04.0-3.fc42.x86_64 (nested folders bookmarks crash fix included)
Wayland session

The crash can be reproduced sometimes.

-- Backtrace (Reduced):
#5  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#6  0x00007f4db4a80f23 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:89
#7  0x00007f4db4a27abe in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#8  0x00007f4db4a0f6d0 in __GI_abort () at abort.c:73
#9  0x00007f4db4c0b052 in std::__glibcxx_assert_fail (file=<optimized out>,
line=<optimized out>, function=<optimized out>, condition=<optimized out>) at
../../../../../libstdc++-v3/src/c++11/assert_fail.cc:41


Reported using DrKonqi

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