GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from evolution...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/evolution [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffd2c40700 (LWP 3161)] [New Thread 0x7fffd243f700 (LWP 3162)] [New Thread 0x7fffca8a7700 (LWP 3163)] [New Thread 0x7fffca0a6700 (LWP 3164)] [New Thread 0x7fffc98a5700 (LWP 3165)] [New Thread 0x7fffc90a4700 (LWP 3166)] [New Thread 0x7fffc88a3700 (LWP 3167)] [New Thread 0x7fffabfff700 (LWP 3168)] [New Thread 0x7fffab7fe700 (LWP 3169)] [New Thread 0x7fffaaffd700 (LWP 3170)] [Thread 0x7fffaaffd700 (LWP 3170) exited] [Thread 0x7fffab7fe700 (LWP 3169) exited] [Thread 0x7fffabfff700 (LWP 3168) exited] [Thread 0x7fffc88a3700 (LWP 3167) exited] [Thread 0x7fffc90a4700 (LWP 3166) exited] [Thread 0x7fffc98a5700 (LWP 3165) exited] [Thread 0x7fffca0a6700 (LWP 3164) exited] [Thread 0x7fffca8a7700 (LWP 3163) exited] Thread 1 "evolution" received signal SIGSEGV, Segmentation fault. __GI___strtoul_l (nptr=0x0, endptr=0x7fffffffd9d8, base=10, loc=0x7ffff2d8a960 <_nl_C_locobj>) at ../stdlib/strtol_l.c:547 (gdb) backtrace #0 0x00007ffff29e5d60 in __GI___strtoul_l (nptr=0x0, endptr=0x7fffffffd9d8, base=10, loc=0x7ffff2d8a960 <_nl_C_locobj>) at ../stdlib/strtol_l.c:547 #1 0x00007fffe66a78cd in () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #2 0x00007fffe66a797e in () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #3 0x00007fffe66a7c82 in () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #4 0x00007fffe66a61b1 in () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #5 0x00007fffe66e1877 in () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #6 0x00007fffe66a83e1 in cogl_context_new () at /usr/lib/x86_64-linux-gnu/libcogl.so.20 #7 0x00007fffe699cc1e in () at /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0 #8 0x00007fffe69b5bf3 in () at /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0 #9 0x00007fffe69c6e69 in () at /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0 #10 0x00007ffff342fa66 in () at /usr/lib/x86_64-linux-gnu/libclutter-gtk-1.0.so.0 #11 0x00007ffff6150658 in g_option_context_parse () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #12 0x00007ffff342fbe1 in gtk_clutter_init_with_args () at /usr/lib/x86_64-linux-gnu/libclutter-gtk-1.0.so.0 #13 0x0000555555557c4b in main () (gdb) quit A debugging session is active. Inferior 1 [process 3157] will be killed. Quit anyway? (y or n) y