$ gdb galculator GNU gdb (Gentoo 7.6 p1) 7.6 Copyright (C) 2013 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 "i686-pc-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/galculator...done. (gdb) run Starting program: /usr/bin/galculator warning: Could not load shared library symbols for linux-gate.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". [galculator] configuration file: couldn't open configuration file /home/lonmad/.config/galculator/galculator.conf for reading. Nothing to worry about if you are starting galculator for the first time. Using defaults. [New Thread 0xf5090b40 (LWP 20851)] Fontconfig warning: "/etc/fonts/conf.d/59-google-droid-sans.conf", line 61: Having multiple values in isn't supported and may not work as expected Fontconfig warning: "/etc/fonts/conf.d/59-google-droid-sans.conf", line 96: Having multiple values in isn't supported and may not work as expected Program received signal SIGSEGV, Segmentation fault. 0x08057e8a in alg_stack_append (stack=stack@entry=0x817d9c0, token=...) at calc_basic.c:356 356 calc_basic.c: No such file or directory. (gdb) backtrace #0 0x08057e8a in alg_stack_append (stack=stack@entry=0x817d9c0, token=...) at calc_basic.c:356 #1 0x08058f5a in alg_add_token (alg=0x8076c44 , this_token=...) at calc_basic.c:456 #2 0x0805aecc in on_operation_button_clicked (button=0x81816b8, user_data=0x0) at callbacks.c:173 #3 0xf7990ec3 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #4 0xf798f266 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #5 0xf79a2b69 in ?? () from /usr/lib/libgobject-2.0.so.0 #6 0xf79aaabd in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #7 0xf79aacf3 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #8 0xf7d84077 in ?? () from /usr/lib/libgtk-3.so.0 #9 0xf798f266 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #10 0xf79a2b69 in ?? () from /usr/lib/libgobject-2.0.so.0 #11 0xf79aa1a6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #12 0xf79aacf3 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #13 0xf7b2d9ce in gtk_accel_group_activate () from /usr/lib/libgtk-3.so.0 #14 0xf7b2f239 in gtk_accel_groups_activate () from /usr/lib/libgtk-3.so.0 #15 0xf7da5346 in gtk_window_activate_key () from /usr/lib/libgtk-3.so.0 #16 0xf7da53c5 in ?? () from /usr/lib/libgtk-3.so.0 #17 0xf7c45766 in ?? () from /usr/lib/libgtk-3.so.0 #18 0xf798dcd4 in ?? () from /usr/lib/libgobject-2.0.so.0 #19 0xf798f266 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #20 0xf79a27b0 in ?? () from /usr/lib/libgobject-2.0.so.0 #21 0xf79aa1a6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #22 0xf79aacf3 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #23 0xf7d85d5b in ?? () from /usr/lib/libgtk-3.so.0 #24 0xf7c437ab in ?? () from /usr/lib/libgtk-3.so.0 #25 0xf7c45408 in gtk_main_do_event () from /usr/lib/libgtk-3.so.0 #26 0xf7a400ac in ?? () from /usr/lib/libgdk-3.so.0 #27 0xf7a6c3e2 in ?? () from /usr/lib/libgdk-3.so.0 #28 0xf789362e in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #29 0xf78939e8 in ?? () from /usr/lib/libglib-2.0.so.0 #30 0xf7893e63 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #31 0xf7c446a5 in gtk_main () from /usr/lib/libgtk-3.so.0 #32 0x080523a1 in main (argc=1, argv=0xffffce94) at main.c:266