Re: general debugging question + Segfault in guile-gtk

[Stan Pinte]

hello,

NOTE: I am using guile-1.6.0, and guile-gtk-1.2 from CVS (refreshed this 
morning).

I have managed to use gdb, and here (enclosed below) is the backtrace of my 
segfault.

I see some functions that sound familiar to me, but I do not understand exactly 
what is the problem.

Do I need to extract more info from gdb? How can I do it?

Any ideas or suggestions?

thanks a lot!!

Stan.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 1112)]
0x4039c174 in sgtk_arg_cleanup (a=0xbfffe64c, obj=0x2174) at guile-gtk.c:2026
2026          if (BOXED_INFO (obj)->cleanup)
(gdb) bt
#0  0x4039c174 in sgtk_arg_cleanup (a=0xbfffe64c, obj=0x2174) at 
guile-gtk.c:2026
#1  0x4039c2e7 in inner_callback_marshal (data=0xbfffe538) at guile-gtk.c:2091
#2  0x40085cd6 in scm_internal_catch (tag=0x2374, body=0x4039c1e0 
<inner_callback_marshal>, body_data=0xbfffe538, 
    handler=0x40078280 <cwdr_handler>, handler_data=0xbfffe4e8) at throw.c:205
#3  0x40078402 in scm_internal_cwdr (body=0x4039c1e0 <inner_callback_marshal>, 
body_data=0xbfffe538, 
    handler=0x40086260 <scm_handle_by_message_noexit>, handler_data=0x403cfd6d, 
stack_start=0xbfffe534) at root.c:283
#4  0x4039c391 in sgtk_callback_marshal (obj=0x81e6268, data=0x81f0dac, 
n_args=3, args=0xbfffe624) at guile-gtk.c:2121
#5  0x404a4844 in gtk_handlers_run () from /usr/lib/libgtk-1.2.so.0
#6  0x404a3bef in gtk_signal_real_emit () from /usr/lib/libgtk-1.2.so.0
#7  0x404a1b47 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
#8  0x4041b6b9 in gtk_clist_select_row () from /usr/lib/libgtk-1.2.so.0
#9  0x4041990e in real_insert_row () from /usr/lib/libgtk-1.2.so.0
#10 0x404194b7 in gtk_clist_append () from /usr/lib/libgtk-1.2.so.0
#11 0x403b0120 in sgtk_gtk_clist_append (p_clist=0x40bf4c78, p_text=0x40a1b198) 
at gtk-glue.c:5276
#12 0x4004952c in scm_deval (x=0x2974, env=0x40a210e8) at eval.c:3102
#13 0x400462c9 in scm_deval (x=0x40a1b040, env=0x40a1b008) at eval.c:2093
#14 0x40045cda in scm_deval (x=0x40bafe20, env=0x40c34778) at eval.c:1999
#15 0x40045cda in scm_deval (x=0x40bc5818, env=0x40bf4bf8) at eval.c:1999
#16 0x40044ec2 in scm_i_eval_x (exp=0x40bc5430, env=0x40bc5400) at eval.c:4010
#17 0x40044f77 in scm_primitive_eval_x (exp=0x40bc5430) at eval.c:4028
#18 0x40060489 in load (data=0x4026dcb0) at load.c:97
#19 0x400384f4 in scm_internal_dynamic_wind (before=0x40060420 <swap_port>, 
inner=0x40060460 <load>, after=0x40060420 <swap_port>, 
    inner_data=0x4026dcb0, guard_data=0xbfffede0) at dynwind.c:168
#20 0x4006057c in scm_primitive_load (filename=0x4026d820) at load.c:126
#21 0x40043800 in scm_ceval (x=0x2974, env=0x4026dc40) at eval.c:3158
#22 0x40044f29 in scm_i_eval (exp=0x8072850, env=0x4026dc40) at eval.c:4017
#23 0x400370ea in scm_start_stack (id=0x807e120, exp=0x8072850, env=0x4026dc40) 
at debug.c:529
#24 0x400371a0 in scm_m_start_stack (exp=0x4026dc48, env=0x4026dc40) at 
debug.c:545
#25 0x400441c0 in scm_apply (proc=0x806ee60, arg1=0x4026dc48, args=0x4026dc58) 
at eval.c:3536
#26 0x400423a4 in scm_ceval (x=0x4026dc48, env=0x4026dc40) at eval.c:2611
#27 0x40044451 in scm_apply (proc=0x4026dad8, arg1=0x2974, args=0x2974) at 
eval.c:3605
#28 0x40043999 in scm_call_0 (proc=0x4026daf0) at eval.c:3263
#29 0x400383b7 in scm_dynamic_wind (in_guard=0x4026db38, thunk=0x4026daf0, 
out_guard=0x4026db48) at dynwind.c:128
#30 0x40043800 in scm_ceval (x=0x402506b0, env=0x4026db30) at eval.c:3158
#31 0x400405c4 in scm_ceval (x=0x4026d838, env=0x4026da90) at eval.c:1971
#32 0x40044ec2 in scm_i_eval_x (exp=0x4026da70, env=0x4026da90) at eval.c:4010
#33 0x40044f77 in scm_primitive_eval_x (exp=0x4026da70) at eval.c:4028
#34 0x4004506f in inner_eval_x (data=0x4026da70) at eval.c:4075
#35 0x400384f4 in scm_internal_dynamic_wind (before=0x40044fd0 
<change_environment>, inner=0x40045050 <inner_eval_x>, 
    after=0x40045010 <restore_environment>, inner_data=0x4026da70, 
guard_data=0x4026da78) at dynwind.c:168
#36 0x400450f0 in scm_eval_x (exp=0x4026da70, module=0x8084c30) at eval.c:4084
#37 0x4007abae in scm_shell (argc=4, argv=0xbffff3ec) at script.c:676
#38 0x8048916 in ?? ()
#39 0x4005cfa9 in invoke_main_func (body_data=0xbffff33c) at init.c:636
#40 0x4005cf57 in scm_boot_guile_1 (base=0xbffff338, closure=0xbffff33c) at 
init.c:616
#41 0x4005cc3c in scm_boot_guile (argc=4, argv=0xbffff3ec, main_func=0x8048900, 
closure=0x0) at init.c:440
#42 0x804894c in ?? ()
#43 0x40140c6f in __libc_start_main () from /lib/libc.so.6