$ gdb pcmanfm GNU gdb (GDB) Fedora (7.4.50.20120120-50.fc17) Copyright (C) 2012 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-redhat-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/pcmanfm...done. (gdb) run Starting program: /usr/bin/pcmanfm [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. 0x08057450 in fm_tab_page_set_show_hidden (page=page@entry=0x0, show_hidden=show_hidden@entry=1) at tab-page.c:529 529 fm_folder_view_set_show_hidden(page->folder_view, show_hidden); Missing separate debuginfos, use: debuginfo-install libexif-0.6.20-2.fc17.i686 (gdb) bt #0 0x08057450 in fm_tab_page_set_show_hidden (page=page@entry=0x0, show_hidden=show_hidden@entry=1) at tab-page.c:529 #1 0x0805381f in on_show_hidden (act=act@entry=0x80ce460 [GtkToggleAction], win=0x80ca810 [FmMainWin]) at main-win.c:709 #2 0xb74a5b4f in g_cclosure_marshal_VOID__VOID (closure=closure@entry=0x80cf2e8, return_value=return_value@entry=0x0, n_param_values=n_param_values@entry=1, param_values=param_values@entry=0xbfffed20, invocation_hint=invocation_hint@entry=0xbfffeccc, marshal_data=marshal_data@entry=0x0) at gmarshal.c:85 #3 0xb74a3d97 in g_closure_invoke (closure=0x80cf2e8, return_value=return_value@entry=0x0, n_param_values=n_param_values@entry=1, param_values=param_values@entry=0xbfffed20, invocation_hint=invocation_hint@entry=0xbfffeccc) at gclosure.c:777 #4 0xb74b5a3d in signal_emit_unlocked_R (node=node@entry=0x80cf7c8, detail=detail@entry=0, instance=instance@entry=0x80ce460, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0xbfffed20) at gsignal.c:3551 #5 0xb74bdcf1 in g_signal_emit_valist (instance=instance@entry=0x80ce460, signal_id=signal_id@entry=124, detail=detail@entry=0, var_args=var_args@entry=0xbfffef2c "\364\177\343\267\364\177\343\267`\344\f\b`\214\f\b*'\275\267`\344\f\b\260\300\n\b\001") at gsignal.c:3300 #6 0xb74bde74 in g_signal_emit (instance=instance@entry=0x80ce460, signal_id=124, detail=detail@entry=0) at gsignal.c:3356 #7 0xb79f1017 in _gtk_action_emit_activate (action=0x80ce460 [GtkToggleAction]) at gtkaction.c:794 #8 0xb7bd272a in IA__gtk_toggle_action_set_active (action=0x80ce460 [GtkToggleAction], is_active=1) at gtktoggleaction.c:270 #9 0x0805412c in fm_main_win_init (win=0x80ca810 [FmMainWin]) at main-win.c:460 #10 0xb74c67a7 in g_type_create_instance (type=type@entry=134965904) at gtype.c:1892 #11 0xb74a8d42 in g_object_constructor (type=134965904, n_construct_properties=2, construct_params=0x80b2a48) at gobject.c:1849 #12 0xb74aa4ed in g_object_newv (object_type=object_type@entry=134965904, n_parameters=n_parameters@entry=0, parameters=parameters@entry=0x0) at gobject.c:1713 #13 0xb74aafa0 in g_object_new (object_type=134965904, first_property_name=first_property_name@entry=0x0) at gobject.c:1542 #14 0x08055e78 in fm_main_win_new () at main-win.c:544 #15 0x08056279 in fm_main_win_add_win (win=win@entry=0x0, path=path@entry=0x80ade70) at main-win.c:957 #16 0x08051f3f in pcmanfm_run () at pcmanfm.c:413 #17 0x08051888 in main (argc=1, argv=0xbffff2e4) at pcmanfm.c:228 (gdb)