* Re: ssh2 and multiheaded X
[not found] <199909220616.IAA00379@piglet.cpu.lu>
@ 1999-09-22 6:24 ` Dan Foster
1999-09-22 7:39 ` Gabriel Paubert
1 sibling, 0 replies; 3+ messages in thread
From: Dan Foster @ 1999-09-22 6:24 UTC (permalink / raw)
To: mlan; +Cc: pogtal, linuxppc-user, linuxppc-dev, Dan Foster
Hot Diggety! On a bright and sunny day, Michel Lanners was rumored to have said.
>
> On 21 Sep, this message from Doomsday Machine echoed through cyberspace:
> >
> > Greetings all-
> > Has anyone successfully compiled ssh2 or gotten some version of
> > multiheaded X working? ssh1 is pretty useless, since any machine not
> > running linuxppc is running ssh2, not ssh1.
[...snip....]
1. ssh2 daemon has a ssh v1 compatibility mode that can be enabled.
2. there is no real intrinsic difference in running ssh v2 over v1;
v2 just has tighter licensing requirements. v1 code has been pored over
line by line after that bad scare (but later turned out to be unfound)
around 1.2.25 and a break-in of a key site.
Of course, neither helps much if a site has chosen to use v2 everywhere :-)
That said, I'm not running a recent version of LinuxPPC so I can't really
tell what exactly is broken at the moment. Sorry.
-Dan
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: ssh2 and multiheaded X
[not found] <199909220616.IAA00379@piglet.cpu.lu>
1999-09-22 6:24 ` ssh2 and multiheaded X Dan Foster
@ 1999-09-22 7:39 ` Gabriel Paubert
1999-09-22 11:09 ` Michael Schmitz
1 sibling, 1 reply; 3+ messages in thread
From: Gabriel Paubert @ 1999-09-22 7:39 UTC (permalink / raw)
To: Michel Lanners; +Cc: pogtal, linuxppc-user, linuxppc-dev
On Wed, 22 Sep 1999, Michel Lanners wrote:
>
> On 21 Sep, this message from Doomsday Machine echoed through cyberspace:
> >
> > Greetings all-
> > Has anyone successfully compiled ssh2 or gotten some version of
> > multiheaded X working? ssh1 is pretty useless, since any machine not
> > running linuxppc is running ssh2, not ssh1.
>
> I tried compiling ssh2, but it aborts with errors on va_arg. Something
> with assigment of incompatible types...
There have been many problems with va_args on PPC due to the fact that the
designers of the SYSV varargs interface had to stand out :-(
Basically you have to use the provided standard macros and _never_ try to
outsmart them because `everybody knows that actually you can simply walk
an array' is utterly wrong on PPC.
And I don't enter the alignment issues which have changed between
versions...
Disclaimer: I've not seen the code, but there have been several varargs
related problems and this was always the answer AFAIR.
Gabriel.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: ssh2 and multiheaded X
1999-09-22 7:39 ` Gabriel Paubert
@ 1999-09-22 11:09 ` Michael Schmitz
0 siblings, 0 replies; 3+ messages in thread
From: Michael Schmitz @ 1999-09-22 11:09 UTC (permalink / raw)
To: Gabriel Paubert; +Cc: mlan, pogtal, linuxppc-user, linuxppc-dev
> > I tried compiling ssh2, but it aborts with errors on va_arg. Something
> > with assigment of incompatible types...
>
> There have been many problems with va_args on PPC due to the fact that the
> designers of the SYSV varargs interface had to stand out :-(
>
> Basically you have to use the provided standard macros and _never_ try to
> outsmart them because `everybody knows that actually you can simply walk
> an array' is utterly wrong on PPC.
>
> And I don't enter the alignment issues which have changed between
> versions...
>
> Disclaimer: I've not seen the code, but there have been several varargs
> related problems and this was always the answer AFAIR.
I still get segfaults due to varargs even though I use the standard macros.
That's with gcc 2.95.1 and it seems to involve pointers to user defined
structs solely. Haven't had time to debug this lately but I can try to write
some sample code to demonstrate it.
Michael
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread