⌂107% θ60° [tom:~] $ gdb claws-mail GNU gdb (Gentoo 7.12.1 vanilla) 7.12.1 Copyright (C) 2017 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-pc-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 claws-mail...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/claws-mail [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". [New Thread 0x7fffe9b36700 (LWP 7489)] [New Thread 0x7fffe9335700 (LWP 7490)] [New Thread 0x7fffe3df3700 (LWP 7491)] ** (claws-mail:7485): WARNING **: [10:22:44] IMAP error on redacted.mail.server: LOGIN error (claws-mail:7485): GLib-GObject-WARNING **: cannot register existing type 'DBusGProxy' (claws-mail:7485): GLib-GObject-CRITICAL **: g_type_set_qdata: assertion 'node != NULL' failed (claws-mail:7485): GLib-GObject-CRITICAL **: g_boxed_type_register_static: assertion 'g_type_from_name (name) == 0' failed (claws-mail:7485): GLib-GObject-CRITICAL **: g_type_set_qdata: assertion 'node != NULL' failed (claws-mail:7485): GLib-GObject-CRITICAL **: g_boxed_type_register_static: assertion 'g_type_from_name (name) == 0' failed (claws-mail:7485): GLib-GObject-CRITICAL **: g_type_set_qdata: assertion 'node != NULL' failed Thread 1 "claws-mail" received signal SIGSEGV, Segmentation fault. 0x00007ffff4896bc8 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0 (gdb) exit Undefined command: "exit". Try "help". (gdb) quit A debugging session is active. Inferior 1 [process 7485] will be killed. Quit anyway? (y or n) y