3.0-pre3 fails on CRAY-YMP

3.0-pre3 fails on CRAY-YMP

[Bruce Stephens]

There are two problems.  One is that configure claims to find -ldir,
but the link at the end says it can't find it.  That's a minor problem,
which I don't understand (may be a bug in autoconf, for all I know).
The second is that there are a couple of calls to setlimits in exec.c
which aren't protected with #ifdef's for getrlimits, which the Cray
appears to lack.  (2.6 pl19 worked fine, so I think both must be cause
by changes between the versions, but it's possible that something in
the system has changed.)

--
Bruce Stephens			| email: B.Stephens@math.ruu.nl
Utrecht University              | telephone: +31 30 2534630
Department of Mathematics       | telefax:   +31 30 2518394
P.O. Box 80010, 3508 TA Utrecht |
The Netherlands                 |

Re: 3.0-pre3 fails on CRAY-YMP

[Johan Danielsson]

Bruce Stephens <stephens@math.ruu.nl> writes:

> One is that configure claims to find -ldir, but the link at the end
> says it can't find it.  That's a minor problem, which I don't
> understand (may be a bug in autoconf, for all I know).

Autoconf is broken in this sense, the Cray ld does not bug out if you
try to link with nonexistant libraries, and autoconf thinks it has to
include them. I will send a patch for this some day.

> The second is that there are a couple of calls to setlimits in
> exec.c which aren't protected with #ifdef's for getrlimits, which
> the Cray appears to lack.

I think I tried to build pre1 on a J90 (which basically is a YMP in
CMOS) with Unicos 9, but I'm not sure. What version are you using?

One other problem I have is that it fails to change the terminal
settings (with stty) - it looks like they get reset back when stty
exits (and no I don't have that option on). I think it might have to
do something to do with the way it opens the terminal, but Im not
sure. Bash works all right.

While on the subject of supercomputers; it seem to work on a 
Fujitsu VX :-)

/Johan

Re: 3.0-pre3 fails on CRAY-YMP

[Johan Danielsson]

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> > The second is that there are a couple of calls to setlimits in
> > exec.c which aren't protected with #ifdef's for getrlimits, which
> > the Cray appears to lack.

Ok, this is a new bug in pre2 or pre3. This is the quick patch:

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RCS file: RCS/exec.c,v
retrieving revision 1.1
diff -u -r1.1 exec.c
--- exec.c      1996/07/24 17:16:34     1.1
+++ exec.c      1996/07/24 17:16:46
@@ -1686,8 +1686,10 @@
            }
            if (type == SIMPLE) {
                closem(1);
+#ifdef HAVE_GETRLIMIT
                if (!forked)
                    setlimits(NULL);
+#endif
                execute((Cmdnam) hn, cflags & BINF_DASH);
            } else {            /* ( ... ) */
                list_pipe = 0;

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However, shouldn't the ifdef stuff be in zsetlimit? This way you don't
have to add ifdefs in every place you want to change limits.


> One other problem I have is that it fails to change the terminal
> settings (with stty) - it looks like they get reset back when stty
> exits (and no I don't have that option on).

This is the symptoms. I haven't had time to look into this, it is a bit
hard to debug these things without a working debugger :-)

$ stty 
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
erase = ^h; 
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 
$ stty erase '^?'
$ stty
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
erase = ^h; 
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 
$ exec /bin/bash
$ stty erase
$ stty
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
erase = ^h; 
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 
$ stty erase '^?'
$ stty # note that the erase character has changed
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 
$ exec ./zsh
/scratch/joda/zsh-3.0-pre3/Src>stty
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 
$ stty erase '^h'
$ stty
speed 9600 baud; -parity hupcl -cread 
rows = 32; columns = 80; ypixels = 0; xpixels = 0;
brkint -inpck icrnl -ixany onlcr tab3 
echo echoe echok iexten 

/Johan