Crashes firefox somehow on Arch Linux

[cole-rogers]

When enabled via GNOME tweaks, firefox seems to have a high chance of randomly crashing on startup, because it complains libgobject is broken and sometimes throws an error about using libcurl instead of curl. I have no idea how this is possible, but when changing to arc or adawatia, it consistently works. Tested on multiple user accounts.

[cole-rogers]

Here is a stack trace from journalctl:

  Coredump: Process 7844 (firefox) of user 1000 dumped core.
                                      Stack trace of thread 7844:
                                      #0  0x00007f4b9a75b6df g_type_check_value (libgobject-2.0.so.0)
                                      #1  0x00007f4b9b3123f4 n/a (libgtk-3.so.0)
                                      #2  0x00007f4b9b310d54 n/a (libgtk-3.so.0)
                                      #3  0x00007f4b9b3073ab n/a (libgtk-3.so.0)
                                      #4  0x00007f4b9b30856c gtk_css_provider_load_from_file (libgtk-3.so.0)
                                      #5  0x00007f4b9b308625 gtk_css_provider_load_from_path (libgtk-3.so.0)
                                      #6  0x00007f4b9b308932 n/a (libgtk-3.so.0)
                                      #7  0x00007f4b9b44aa57 n/a (libgtk-3.so.0)
                                      #8  0x00007f4b9b44e0cd n/a (libgtk-3.so.0)
                                      #9  0x00007f4b9b3d91f9 n/a (libgtk-3.so.0)
                                      #10 0x00007f4b9a77b3c5 g_closure_invoke (libgobject-2.0.so.0)
                                      #11 0x00007f4b9a768195 n/a (libgobject-2.0.so.0)
                                      #12 0x00007f4b9a76c01e g_signal_emit_valist (libgobject-2.0.so.0)
                                      #13 0x00007f4b9a76ca80 g_signal_emit (libgobject-2.0.so.0)
                                      #14 0x00007f4b9a77b3c5 g_closure_invoke (libgobject-2.0.so.0)
                                      #15 0x00007f4b9a76799f n/a (libgobject-2.0.so.0)
                                      #16 0x00007f4b9a76c01e g_signal_emit_valist (libgobject-2.0.so.0)
                                      #16 0x00007f4b9a76c01e g_signal_emit_valist (libgobject-2.0.so.0)
                                      #17 0x00007f4b9a76c762 g_signal_emit_by_name (libgobject-2.0.so.0)
                                      #18 0x00007f4b9b0e295c n/a (libgdk-3.so.0)
                                      #19 0x00007f4b9b0b5f17 gdk_display_manager_open_display (libgdk-3.so.0)
                                      #20 0x00007f4b94462a4f n/a (libxul.so)
                                      #21 0x00007f4b9446813e n/a (libxul.so)
                                      #22 0x00007f4b94468633 n/a (libxul.so)
                                      #23 0x000055ef9cf8d3cc n/a (firefox)
                                      #24 0x000055ef9cf8d196 n/a (firefox)
                                      #25 0x00007f4b9c054223 __libc_start_main (libc.so.6)
                                      #26 0x000055ef9cf9edde _start (firefox)
                                      
                                      Stack trace of thread 7850:
                                      #0  0x00007f4b9c120c21 __poll (libc.so.6)
                                      #1  0x00007f4b9a695540 n/a (libglib-2.0.so.0)
                                      #2  0x00007f4b9a6965c2 g_main_loop_run (libglib-2.0.so.0)
                                      #3  0x00007f4b9a941cb8 n/a (libgio-2.0.so.0)
                                      #4  0x00007f4b9a67067b n/a (libglib-2.0.so.0)
                                      #5  0x00007f4b9c1fba9d start_thread (libpthread.so.0)
                                      #6  0x00007f4b9c12bb23 __clone (libc.so.6)
                                      
                                      Stack trace of thread 7849:
                                      #0  0x00007f4b9c120c21 __poll (libc.so.6)
                                      #1  0x00007f4b9a695540 n/a (libglib-2.0.so.0)
                                      #2  0x00007f4b9a69562e g_main_context_iteration (libglib-2.0.so.0)
                                      #3  0x00007f4b9a695682 n/a (libglib-2.0.so.0)
                                      #4  0x00007f4b9a67067b n/a (libglib-2.0.so.0)
                                      #5  0x00007f4b9c1fba9d start_thread (libpth

[hprem]

I have also started seeing this crash with Telinkrin theme. Firefox works fine on changing the theme

May 07 18:07:37 prem-lnx systemd-coredump[5321]: Process 5315 (firefox) of user 1001 dumped core.                                             
                                                 Stack trace of thread 5315:
                                                 #0  0x00007ffb6b9345af g_type_check_value (libgobject-2.0.so.0)

[SyntevoAlex]

This crash is caused by GTK bug:
https://gitlab.gnome.org/GNOME/gtk/issues/751

Workaround: do not use multiple colors in border CSS property.
border ignores multiple colors anyways and if it doesn't crash, it will use the last color for all 4 sides, see GTK sources parse_border().