bt
#0  0x400a0481 in kill () from /lib/i686/libc.so.6
#1  0x400a0215 in raise () from /lib/i686/libc.so.6
#2  0x400a176b in abort () from /lib/i686/libc.so.6
#3  0x080d5a6e in rb_bug (fmt=0x0) at error.c:191
#4  0x0805a771 in module_setup (module=1076033948, n=0x4022fa78) at eval.c:3675
#5  0x08059a96 in rb_eval (self=1075685964, n=0x0) at eval.c:3600

Which flags? Well that was interesting. If I tried with my standard
see everything in the stack frame flags -g -O0, the problem went away!

So I put the old flags back one by one and found the old
vomit-frame-point, (sorry that should be -fomit), was the culprit.

Sounds to me like an uninitialised variable somewhere. (Anybody have a
Valgrind  suppressions file for ruby-1.8.0?)

Since it has -fomit-frame-pointer, in I'm not sure how helpful the
backtrace really is.

Going up to frame #4...
frame 4
#4  0x0805a771 in module_setup (module=1076033948, n=0x4022fa78) at eval.c:3675
3675            result = rb_eval(ruby_cbase, node->nd_next);

p *node
$3 = {flags = 84940863, nd_file = 0x8161919 "./rbconfig.rb", u1 = {node = 0x0, id = 0, value = 0,
    cfunc = 0, tbl = 0x0}, u2 = {node = 0x0, id = 0, argc = 0, value = 0}, u3 = {
    node = 0x40233dd0, id = 1076051408, state = 1076051408, entry = 0x40233dd0, cnt = 1076051408,
    value = 1076051408}}

(gdb) p n
$6 = (NODE *) 0x4022fa78
(gdb) p *n
$7 = {flags = 2787391, nd_file = 0x8161919 "./rbconfig.rb", u1 = {node = 0x401aebf4,
    id = 1075506164, value = 1075506164, cfunc = 0x401aebf4, tbl = 0x401aebf4}, u2 = {
    node = 0x4022fa8c, id = 1076034188, argc = 1076034188, value = 1076034188}, u3 = {node = 0x0,
    id = 0, state = 0, entry = 0x0, cnt = 0, value = 0}}

On Thu, 26 Jun 2003 nobu.nokada / softhome.net wrote:

> Hi,
>
> At Thu, 26 Jun 2003 15:34:51 +0900,
> John Carter wrote:
> > Sorry, thats all there is. There is no stack trace. Nothing more than that
> > is printed out.
>
> Try
>
>   $ gdb ../miniruby
>   gdb> run -I.. mkmf.rb
>
> and "bt" after SEGV.
>
> BTW, what CFLAGS do you compile with?
>
> --
> Nobu Nakada
>



John Carter                             Phone : (64)(3) 358 6639
Tait Electronics                        Fax   : (64)(3) 359 4632
PO Box 1645 Christchurch                Email : john.carter / tait.co.nz
New Zealand

A Million Monkeys can inflict worse things than just Shakespeare on
your system.