Re: [9fans] Irc segmentation fault

2017-06-29 Thread Rudolf Sykora 
On 29 June 2017 at 11:29, Nick Owens  wrote:
> you probably need to use gcc -O0 -g for that.

Doesn't it matter that the program is normally built with 9c?

Thanks
Ruda

Re: [9fans] Irc segmentation fault

2017-06-29 Thread Nick Owens 
you probably need to use gcc -O0 -g for that. but it looks like the problem
is in dameonize.c:38. lowering optimization might help since there might be
inlined functions.. haven't really looked at Irc.

On Jun 29, 2017 02:24, "Rudolf Sykora"  wrote:

On 29 June 2017 at 09:39, Nick Owens  wrote:
> acid is next to impossible to use on unix systems. just run gdb with
'thread
> apply all bt'.. should give you an idea of what's wrong.

If I run Irc in gdb, I get

(gdb) run irc.freenode.org
Starting program: /usr/local/plan9port/bin/Irc irc.freenode.org
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x7749bedf in raise () from /lib64/libpthread.so.0
(gdb) where
#0  0x7749bedf in raise () from /lib64/libpthread.so.0
#1  0x0040df34 in child () at daemonize.c:38
#2  0x0040e18e in _threadsetupdaemonize () at daemonize.c:153
#3  0x0040de3d in p9main (argc=2, argv=0x7fffdcb8) at
thread.c:721
#4  0x00402ae9 in main (argc=, argv=)
at main.c:10

which I really don't understand...
How could argc, argv be 'optimized out'?

Thanks for any comments!
Ruda

Re: [9fans] Irc segmentation fault

2017-06-29 Thread Rudolf Sykora 
On 29 June 2017 at 09:39, Nick Owens  wrote:
> acid is next to impossible to use on unix systems. just run gdb with 'thread
> apply all bt'.. should give you an idea of what's wrong.

If I run Irc in gdb, I get

(gdb) run irc.freenode.org
Starting program: /usr/local/plan9port/bin/Irc irc.freenode.org
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x7749bedf in raise () from /lib64/libpthread.so.0
(gdb) where
#0  0x7749bedf in raise () from /lib64/libpthread.so.0
#1  0x0040df34 in child () at daemonize.c:38
#2  0x0040e18e in _threadsetupdaemonize () at daemonize.c:153
#3  0x0040de3d in p9main (argc=2, argv=0x7fffdcb8) at thread.c:721
#4  0x00402ae9 in main (argc=, argv=)
at main.c:10

which I really don't understand...
How could argc, argv be 'optimized out'?

Thanks for any comments!
Ruda

Re: [9fans] Irc segmentation fault

2017-06-29 Thread Nick Owens 
acid is next to impossible to use on unix systems. just run gdb with
'thread apply all bt'.. should give you an idea of what's wrong.

On Jun 29, 2017 00:33, "Rudolf Sykora"  wrote:

> > $ Irc irc.freenode.org
> > Segmentation fault
>
> Do I have to use acid to debug it, or is it possible to use the usual
> unix gdb to debug this on p9p?
>
> Thanks
> Ruda
>
>

Re: [9fans] Irc segmentation fault

2017-06-29 Thread Rudolf Sykora 
> $ Irc irc.freenode.org
> Segmentation fault

Do I have to use acid to debug it, or is it possible to use the usual
unix gdb to debug this on p9p?

Thanks
Ruda