Segmentation fault on startup, arch linux

[cdwijs]

Summary

When I start ladybird from the terminal, I get the error: Segmentation fault (core dumped)

Operating system

Linux

Steps to reproduce

1. Build ladybird from this AUR script: https://aur.archlinux.org/packages/ladybird-git
2. Install the above package with pacman -U
3. Open a terminal, and run Ladybird
4. Observe the error

Expected behavior

Ladybird starting, and showing a window.

Actual behavior

Error out with: Segmentation fault (core dumped) On startup.

URL for a reduced test case

N/A

HTML/SVG/etc. source for a reduced test case

N/A

Log output and (if possible) backtrace

[cedric@cedric ladybird]$ Ladybird 
Segmentation fault (core dumped)

Screenshots or screen recordings

No response

Build flags or config settings

No response

Contribute a patch?

• [ ] I’ll contribute a patch for this myself.

[j0lle]

Just tried it so I could confirm, but it worked... could you run it with gdb? $ gdb /usr/bin/Ladybird y (gdb) run ... (gdb) bt gives you the backtrace, should give some more info

[cdwijs]

Thank you for the clear instructions.

` [cedric@cedric ladybird]$ gdb /usr/bin/Ladybird GNU gdb (GDB) 16.2 Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: https://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/.

For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/Ladybird...

This GDB supports auto-downloading debuginfo from the following URLs: https://debuginfod.archlinux.org Enable debuginfod for this session? (y or [n]) y Debuginfod has been enabled. To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit. Downloading separate debug info for /usr/bin/Ladybird (No debugging symbols found in /usr/bin/Ladybird)
(gdb) run Starting program: /usr/bin/Ladybird Downloading 1.09 M separate debug info for /lib64/ld-linux-x86-64.so.2 Downloading 512.62 K separate debug info for /usr/bin/../lib/libGLX.so.0
Downloading 64.74 K separate debug info for /usr/bin/../lib/libOpenGL.so.0
Downloading 540.71 K separate debug info for /usr/lib/libjson-glib-1.0.so.0
Downloading 92.78 K separate debug info for /usr/lib/libdatrie.so.1
Downloading 920.19 K separate debug info for /usr/lib/liblzma.so.5
Downloading 78.90 K separate debug info for /usr/lib/libjbig.so.2.1
[New Thread 0x7fffeb2d76c0 (LWP 118694)]
[New Thread 0x7fffeaad66c0 (LWP 118695)] [New Thread 0x7fffea2d56c0 (LWP 118696)] [New Thread 0x7fffe9a726c0 (LWP 118697)]

Thread 1 "Ladybird" received signal SIGSEGV, Segmentation fault. 0x000055555e4bd550 in ?? () (gdb) bt #0 0x000055555e4bd550 in ?? () #1 0x00007ffff5480b7b in hb_face_reference_table () from /usr/bin/../lib/libharfbuzz.so.0 #2 0x00007ffff549e18e in ?? () from /usr/bin/../lib/libharfbuzz.so.0 #3 0x00007ffff550e925 in hb_ot_var_get_axis_infos () from /usr/bin/../lib/libharfbuzz.so.0 #4 0x00007ffff19025ad in pango_fc_font_create_hb_font (font=) at ../pango/pango/pangofc-font.c:1013 #5 0x00007ffff04bb8aa in pango_font_get_hb_font (font=0x55555e4177a0) at ../pango/pango/fonts.c:2285 #6 0x00007ffff04f04ad in pango_font_get_hb_font_for_context (font=0x55555e4177a0, context=0x7fffffffc630) at ../pango/pango/shape.c:241 #7 pango_hb_shape.isra.0 (item_text=item_text@entry=0x55555e47ebd0 "●", item_length=item_length@entry=3, paragraph_text=paragraph_text@entry=0x55555e47ebd0 "●", paragraph_length=3, analysis=analysis@entry=0x55555e4bd420, log_attrs=0x55555e47f0b0, num_chars=1, glyphs=0x55555e4bd370, flags=) at ../pango/pango/shape.c:398 #8 0x00007ffff04e5610 in pango_shape_internal (item_text=0x55555e47ebd0 "●", item_length=3, paragraph_text=, paragraph_length=, analysis=0x55555e4bd420, log_attrs=, num_chars=1, glyphs=0x55555e4bd370, flags=PANGO_SHAPE_ROUND_POSITIONS) at ../pango/pango/shape.c:647 #9 0x00007ffff04e5e77 in pango_shape_item (item=, paragraph_text=, paragraph_length=, log_attrs=, glyphs=, flags=) at ../pango/pango/shape.c:960 #10 0x00007ffff04d1666 in shape_run (line=line@entry=0x55555e4bd480, state=state@entry=0x7fffffffcd40, item=item@entry=0x55555e4bd410) at ../pango/pango/pango-layout.c:3722 #11 0x00007ffff04d2c56 in process_item (layout=layout@entry=0x55555e401290, line=line@entry=0x55555e4bd480, state=state@entry=0x7fffffffcd40, force_fit=force_fit@entry=1, no_break_at_end=no_break_at_end@entry=0, is_last_item=1) at ../pango/pango/pango-layout.c:4051 #12 0x00007ffff04d52b4 in process_line (layout=0x55555e401290, state=0x7fffffffcd40) at ../pango/pango/pango-layout.c:4519 #13 pango_layout_check_lines.part.0.lto_priv.0 (layout=) at ../pango/pango/pango-layout.c:4953 #14 0x00007ffff04c9992 in pango_layout_check_lines (layout=0x55555e401290) at ../pango/pango/pango-layout.c:4802 #15 pango_layout_get_unknown_glyphs_count (layout=0x55555e401290) at ../pango/pango/pango-layout.c:1440 #16 pango_layout_get_unknown_glyphs_count (layout=0x55555e401290) at ../pango/pango/pango-layout.c:1430 #17 0x00007fffeb946c02 in ?? () from /usr/lib/qt6/plugins/platformthemes/../../../libgtk-3.so.0 #18 0x00007fffeb947020 in ?? () from /usr/lib/qt6/plugins/platformthemes/../../../libgtk-3.so.0 #19 0x00007ffff48c8b09 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0 #20 0x00007ffff48ad805 in ?? () from /usr/lib/libgobject-2.0.so.0 #21 0x00007ffff48aee7f in g_object_new_with_properties () from /usr/lib/libgobject-2.0.so.0 #22 0x00007ffff48afed2 in g_object_new () from /usr/lib/libgobject-2.0.so.0 #23 0x00007ffff199b382 in QGtk3Interface::qt_new_gtkWidget (this=0x55555e5b0ea0, type=QGtk3Interface::QGtkWidget::gtk_entry) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:328 #24 QGtk3Interface::widget (this=0x55555e5b0ea0, type=type@entry=QGtk3Interface::QGtkWidget::gtk_entry) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:437 #25 0x00007ffff199baaa in QGtk3Interface::context (w=, this=0x55555e5b0ea0) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:455 #26 QGtk3Interface::context (this=0x55555e5b0ea0, w=0x0) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:450 #27 QGtk3Interface::color (this=this@entry=0x55555e5b0ea0, widget=widget@entry=0x0, source=source@entry=QGtk3Interface::QGtkColorSource::Background, state=state@entry=GTK_STATE_FLAG_ACTIVE) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:385 #28 0x00007ffff199dadd in QGtk3Interface::colorSchemeByColors (this=0x55555e5b0ea0) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3interface.cpp:505 #29 QGtk3Storage::populateMap (this=0x55555e4856f0) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3storage.cpp:373 #30 0x00007ffff199fef7 in QGtk3Storage::QGtk3Storage (this=, this=) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3storage.cpp:27 #31 0x00007ffff1996097 in QGtk3Theme::QGtk3Theme (this=0x55555e321000) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/qgtk3theme.cpp:106 #32 QGtk3ThemePlugin::create (this=, key=..., params=...) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/main.cpp:22 #33 QGtk3ThemePlugin::create (this=, key=..., params=...) at /usr/src/debug/qt6-base/qtbase/src/plugins/platformthemes/gtk3/main.cpp:18 #34 0x00007ffff6dd1bec in QPlatformThemeFactory::create(QString const&, QString const&) () from /usr/bin/../lib/libQt6Gui.so.6 #35 0x00007ffff6d8925a in QGuiApplicationPrivate::createPlatformIntegration() () from /usr/bin/../lib/libQt6Gui.so.6 #36 0x00007ffff6d8acd8 in QGuiApplicationPrivate::createEventDispatcher() () from /usr/bin/../lib/libQt6Gui.so.6 #37 0x00007ffff6558a7d in QCoreApplicationPrivate::init() () from /usr/bin/../lib/libQt6Core.so.6 #38 0x00007ffff6d8ad6e in QGuiApplicationPrivate::init() () from /usr/bin/../lib/libQt6Gui.so.6 #39 0x00007ffff76f9ae6 in QApplicationPrivate::init() () from /usr/bin/../lib/libQt6Widgets.so.6 #40 0x0000555558748305 in ?? () #41 0x000055555877f8ad in ?? () #42 0x0000555558810c5f in main () (gdb) `

[j0lle]

Thanks! I was able to replicate the error by running it with gtk3

could you try running it like this: $ QT_QPA_PLATFORMTHEME=qt6 Ladybird

You may need to install qt6-base first.

[cdwijs]

pacman -S qt6-base

resolving dependencies... looking for conflicting packages...

Packages (1) qt6-base-6.8.2-3

Total Download Size: 14.22 MiB Total Installed Size: 60.10 MiB Net Upgrade Size: 0.00 MiB

:: Proceed with installation? [Y/n] n

$ QT_QPA_PLATFORMTHEME=qt6 Ladybird Segmentation fault (core dumped)

$ QT_QPA_PLATFORMTHEME=qt6 gdb Ladybird GNU gdb (GDB) 16.2 Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: https://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/.

For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from Ladybird...

This GDB supports auto-downloading debuginfo from the following URLs: https://debuginfod.archlinux.org Enable debuginfod for this session? (y or [n]) y Debuginfod has been enabled. To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit. (No debugging symbols found in Ladybird) (gdb) run Starting program: /usr/bin/Ladybird [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7ffff15ff6c0 (LWP 136636)] [New Thread 0x7ffff0dfe6c0 (LWP 136637)] [New Thread 0x7fffeb2d76c0 (LWP 136638)] [New Thread 0x7fffeaad66c0 (LWP 136639)] [New Thread 0x7fffea2d56c0 (LWP 136640)] [New Thread 0x7fffe9a726c0 (LWP 136641)]

Thread 7 "Ladybird" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffe9a726c0 (LWP 136641)] Downloading 32.01 K source file /usr/src/debug/fontconfig/build/../fontconfig/src/fcmatch.c 0x00007ffff62f1279 in FcCompare (pat=pat@entry=0x55555e4bf6e0, fnt=0x7fffe9ac3168, value=value@entry=0x7fffe8eed018, result=result@entry=0x7fffe9a71ba0, data=data@entry=0x7fffe9a71af8)
at ../fontconfig/src/fcmatch.c:624 624 while (i1 < pat->num && i2 < fnt->num) (gdb) bt #0 0x00007ffff62f1279 in FcCompare (pat=pat@entry=0x55555e4bf6e0, fnt=0x7fffe9ac3168, value=value@entry=0x7fffe8eed018, result=result@entry=0x7fffe9a71ba0, data=data@entry=0x7fffe9a71af8) at ../fontconfig/src/fcmatch.c:624 #1 0x00007ffff62f817c in IA__FcFontSetSort (config=, sets=sets@entry=0x55555e473630, nsets=nsets@entry=1, p=0x55555e4bf6e0, trim=trim@entry=1, csp=csp@entry=0x0, result=0x7fffe9a71ba0) at ../fontconfig/src/fcmatch.c:1275 #2 0x00007ffff18fe923 in sort_in_thread (task_data=0x55555e473620) at ../pango/pango/pangofc-fontmap.c:962 #3 fc_thread_func (data=0x55555e469a70) at ../pango/pango/pangofc-fontmap.c:1002 #4 0x00007ffff5601be6 in ?? () from /usr/bin/../lib/libglib-2.0.so.0 #5 0x00007ffff5ea370a in start_thread (arg=) at pthread_create.c:448 #6 0x00007ffff5f27aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78 (gdb) q A debugging session is active.

Inferior 1 [process 136632] will be killed.

Quit anyway? (y or n) y [cedric@cedric ladybird]$

[j0lle]

Can't replicate that one sadly I'm not sure how to help further, but I'll try

you can try to rebuild your font cache, both crashes are related to font rendering $ fc-cache -r -v

what version of pango is installed? $ pacman -Qi pango mine is 1.56.1

Do you have a special font as system font? I may be wrong of course, but I think a font on your system is causing this. We have the same error on gtk3 so I'd suggest using 'QT_QPA_PLATFORMTHEME=qt6 Ladybird' for testing.

[cdwijs]

I have just updated my machine, but I have not yet rebooted.

[cedric@cedric ladybird]$ fc-cache -r -v Font directories: /home/cedric/.local/share/fonts /usr/local/share/fonts /usr/share/fonts /usr/share/gdm/fonts /var/lib/menu-xdg/fonts /home/cedric/.fonts /usr/share/fonts/100dpi /usr/share/fonts/75dpi /usr/share/fonts/TTF /usr/share/fonts/WindowsFonts /usr/share/fonts/adobe-source-code-pro /usr/share/fonts/adobe-source-sans /usr/share/fonts/adobe-source-serif /usr/share/fonts/caladea /usr/share/fonts/cantarell /usr/share/fonts/carlito /usr/share/fonts/encodings /usr/share/fonts/gnu-free /usr/share/fonts/gsfonts /usr/share/fonts/liberation /usr/share/fonts/misc /usr/share/fonts/noto /usr/share/fonts/noto-cjk /usr/share/fonts/util /usr/share/fonts/wenquanyi /usr/share/fonts/encodings/large /usr/share/fonts/wenquanyi/wqy-zenhei /home/cedric/.local/share/fonts: skipping, no such directory /usr/local/share/fonts: skipping, no such directory /usr/share/fonts: caching, new cache contents: 0 fonts, 19 dirs /usr/share/fonts/100dpi: caching, new cache contents: 398 fonts, 0 dirs /usr/share/fonts/75dpi: caching, new cache contents: 398 fonts, 0 dirs /usr/share/fonts/TTF: caching, new cache contents: 32 fonts, 0 dirs /usr/share/fonts/WindowsFonts: caching, new cache contents: 196 fonts, 0 dirs /usr/share/fonts/adobe-source-code-pro: caching, new cache contents: 30 fonts, 0 dirs /usr/share/fonts/adobe-source-sans: caching, new cache contents: 56 fonts, 0 dirs /usr/share/fonts/adobe-source-serif: caching, new cache contents: 150 fonts, 0 dirs /usr/share/fonts/caladea: caching, new cache contents: 4 fonts, 0 dirs /usr/share/fonts/cantarell: caching, new cache contents: 6 fonts, 0 dirs /usr/share/fonts/carlito: caching, new cache contents: 4 fonts, 0 dirs /usr/share/fonts/encodings: caching, new cache contents: 0 fonts, 1 dirs /usr/share/fonts/encodings/large: caching, new cache contents: 0 fonts, 0 dirs /usr/share/fonts/gnu-free: caching, new cache contents: 12 fonts, 0 dirs /usr/share/fonts/gsfonts: caching, new cache contents: 35 fonts, 0 dirs /usr/share/fonts/liberation: caching, new cache contents: 12 fonts, 0 dirs /usr/share/fonts/misc: caching, new cache contents: 1 fonts, 0 dirs /usr/share/fonts/noto: caching, new cache contents: 2137 fonts, 0 dirs /usr/share/fonts/noto-cjk: caching, new cache contents: 80 fonts, 0 dirs /usr/share/fonts/util: caching, new cache contents: 0 fonts, 0 dirs /usr/share/fonts/wenquanyi: caching, new cache contents: 0 fonts, 1 dirs /usr/share/fonts/wenquanyi/wqy-zenhei: caching, new cache contents: 3 fonts, 0 dirs /usr/share/gdm/fonts: skipping, no such directory /var/lib/menu-xdg/fonts: skipping, no such directory /home/cedric/.fonts: skipping, no such directory /usr/share/fonts/100dpi: skipping, looped directory detected /usr/share/fonts/75dpi: skipping, looped directory detected /usr/share/fonts/TTF: skipping, looped directory detected /usr/share/fonts/WindowsFonts: skipping, looped directory detected /usr/share/fonts/adobe-source-code-pro: skipping, looped directory detected /usr/share/fonts/adobe-source-sans: skipping, looped directory detected /usr/share/fonts/adobe-source-serif: skipping, looped directory detected /usr/share/fonts/caladea: skipping, looped directory detected /usr/share/fonts/cantarell: skipping, looped directory detected /usr/share/fonts/carlito: skipping, looped directory detected /usr/share/fonts/encodings: skipping, looped directory detected /usr/share/fonts/gnu-free: skipping, looped directory detected /usr/share/fonts/gsfonts: skipping, looped directory detected /usr/share/fonts/liberation: skipping, looped directory detected /usr/share/fonts/misc: skipping, looped directory detected /usr/share/fonts/noto: skipping, looped directory detected /usr/share/fonts/noto-cjk: skipping, looped directory detected /usr/share/fonts/util: skipping, looped directory detected /usr/share/fonts/wenquanyi: skipping, looped directory detected /usr/share/fonts/encodings/large: skipping, looped directory detected /usr/share/fonts/wenquanyi/wqy-zenhei: skipping, looped directory detected /var/cache/fontconfig: not cleaning unwritable cache directory /home/cedric/.cache/fontconfig: cleaning cache directory /home/cedric/.cache/fontconfig: invalid cache file: 807752c9e168308eb5108dacded5237a-le64.cache-9 /home/cedric/.cache/fontconfig: invalid cache file: 158c65c810c0d352a587f5be66058e87-le64.cache-9 /home/cedric/.cache/fontconfig: invalid cache file: 2e755eb509a594ba7adde982574983b5-le64.cache-9 /home/cedric/.fontconfig: not cleaning non-existent cache directory fc-cache: succeeded

[cedric@cedric ladybird]$ pacman -Qi pango Name : pango Version : 1:1.56.1-1 Description : A library for layout and rendering of text Architecture : x86_64 URL : https://www.pango.org/ Licenses : LGPL-2.1-or-later Groups : None Provides : libpango-1.0.so=0-64 libpangocairo-1.0.so=0-64 libpangoft2-1.0.so=0-64 libpangoxft-1.0.so=0-64 Depends On : cairo fontconfig freetype2 fribidi glib2 glibc harfbuzz libsysprof-capture libthai libx11 libxft libxrender Optional Deps : None Required By : appstream ardour firefox fontforge freeciv gcr gedit gegl giggle gimp gitg gnome-disk-utility gnome-maps gnome-system-monitor gnuplot gnuradio-companion granite graphviz gspell gst-plugins-bad gst-plugins-base gtk-sharp-3 gtk2 gtk3 gtk4 gtksourceview5 java8-openjfx lib32-pango libadwaita libdecor libgdiplus libgedit-gtksourceview libgedit-tepl libhandy libreoffice-fresh librsvg libshumate libtiger libvips libwnck lilypond lutris meld moserial nautilus openbox pangomm pangomm-2.48 r signal-desktop steam-native-runtime thunderbird vte3 webkit2gtk webkit2gtk-4.1 wxwidgets-gtk3 zenity Optional For : imagemagick mlt qt6-base Conflicts With : None Replaces : None Installed Size : 2.32 MiB Packager : Jan Alexander Steffens (heftig) <[email protected]> Build Date : Sun 19 Jan 2025 04:42:35 AM CET Install Date : Thu 13 Feb 2025 07:05:06 PM CET Install Reason : Installed as a dependency for another package Install Script : No Validated By : Signature

`[cedric@cedric ladybird]$ QT_QPA_PLATFORMTHEME=qt6 gdb Ladybird GNU gdb (GDB) 16.2 Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: https://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/.

For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from Ladybird...

This GDB supports auto-downloading debuginfo from the following URLs: https://debuginfod.archlinux.org Enable debuginfod for this session? (y or [n]) y Debuginfod has been enabled. To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit. (No debugging symbols found in Ladybird) (gdb) run Starting program: /usr/bin/Ladybird Downloading 44.71 M separate debug info for /usr/bin/../lib/libQt6Network.so.6 Downloading 137.11 M separate debug info for /usr/bin/../lib/libQt6Widgets.so.6
Downloading 192.58 M separate debug info for /usr/bin/../lib/libQt6Gui.so.6
Downloading 97.41 M separate debug info for /usr/bin/../lib/libQt6Core.so.6
Downloading 3.34 M separate debug info for /usr/bin/../lib/libvulkan.so.1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1". Downloading 5.77 M separate debug info for /usr/bin/../lib/libzstd.so.1 Downloading 4.62 M separate debug info for /usr/bin/../lib/libglib-2.0.so.0
Downloading 746.22 K separate debug info for /usr/bin/../lib/libpng16.so.16
Downloading 36.66 M separate debug info for /usr/bin/../lib/libharfbuzz.so.0
Downloading 22.59 M separate debug info for /usr/bin/../lib/libicui18n.so.76
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[New Thread 0x7ffff15276c0 (LWP 181596)]
[New Thread 0x7ffff0d266c0 (LWP 181597)] Downloading 23.81 M separate debug info for /usr/lib/qt6/plugins/platformthemes/../../../libgtk-3.so.0 Downloading 3.61 M separate debug info for /usr/lib/qt6/plugins/platformthemes/../../../libgdk-3.so.0
Downloading 3.28 M separate debug info for /usr/lib/libtinysparql-3.0.so.0
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Downloading 740.77 K separate debug info for /usr/lib/gio/modules/libgvfsdbus.so
Downloading 693.91 K separate debug info for /usr/lib/gvfs/libgvfscommon.so
[New Thread 0x7fffeb1a16c0 (LWP 181603)]
[New Thread 0x7fffea9a06c0 (LWP 181604)] [New Thread 0x7fffea19f6c0 (LWP 181605)] [New Thread 0x7fffe993c6c0 (LWP 181606)]

Thread 7 "Ladybird" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffe993c6c0 (LWP 181606)] 0x00007ffff62eb279 in FcCompare (pat=pat@entry=0x55555e4bf8e0, fnt=0x7fffe998d168, value=value@entry=0x7fffd0612078, result=result@entry=0x7fffe993bba0, data=data@entry=0x7fffe993baf8) at ../fontconfig/src/fcmatch.c:624 624 while (i1 < pat->num && i2 < fnt->num) (gdb) bt #0 0x00007ffff62eb279 in FcCompare (pat=pat@entry=0x55555e4bf8e0, fnt=0x7fffe998d168, value=value@entry=0x7fffd0612078, result=result@entry=0x7fffe993bba0, data=data@entry=0x7fffe993baf8) at ../fontconfig/src/fcmatch.c:624 #1 0x00007ffff62f217c in IA__FcFontSetSort (config=, sets=sets@entry=0x55555e4e63e0, nsets=nsets@entry=1, p=0x55555e4bf8e0, trim=trim@entry=1, csp=csp@entry=0x0, result=0x7fffe993bba0) at ../fontconfig/src/fcmatch.c:1275 #2 0x00007ffff01e9923 in sort_in_thread (task_data=0x55555e4e63d0) at ../pango/pango/pangofc-fontmap.c:962 #3 fc_thread_func (data=0x55555e4696b0) at ../pango/pango/pangofc-fontmap.c:1002 #4 0x00007ffff5601f66 in g_thread_proxy (data=0x55555e46a6b0) at ../glib/glib/gthread.c:892 #5 0x00007ffff5ea370a in start_thread (arg=) at pthread_create.c:448 #6 0x00007ffff5f27aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78 (gdb) `

[avbdr]

i think this is a dup of https://github.com/LadybirdBrowser/ladybird/issues/3438

[kalenikaliaksandr]

please reopen this issue if it's reproducible on a build from master

[XenHat]

I had the same issue and compiling the browser from source following the instructions in the repository worked. Seems like the AUR package was broken.