comint-run can't send signals to subjob

comint-run can't send signals to subjob

[Robert Andersson]

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In GNU Emacs 21.1.1 (sparc-sun-solaris2.8, X toolkit)
 of 2001-10-22 on mozart
configured using `configure  --with-xpm --with-jpeg --with-tiff=/usr/local --with-gif --with-png'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: iso_8859_1
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

when running a programme in comint-run it will not accept any signals
from this buffer, though it will accept something like

     pkill -INT -U $USER programme

from a external shell. note though that we have recently upgraded our
system from sun os 5.8 to 5.9 without recompiling emacs. this can not
be done because of another compile bug:

In file included from /usr/openwin/include/X11/Xos.h:79,
                 from xfaces.c:279:
/usr/include/strings.h:25: conflicting types for `memmove'
/usr/include/iso/string_iso.h:62: previous declaration of `memmove'
/usr/include/strings.h:26: parse error before `0'
/usr/include/strings.h:26: warning: conflicting types for built-in function `memset'
gcc -c  -Demacs -DHAVE_CONFIG_H -DUSE_LUCID  -I. -I/usr/local/src/installed/emacs-21.1/src       -I/usr/openwin/include    -I/usr/dt/include  -O3 -mcpu=v8 -mtune=v9 xfns.c
In file included from /usr/openwin/include/X11/Xos.h:79,
                 from xfns.c:74:
/usr/include/strings.h:25: conflicting types for `memmove'
/usr/include/iso/string_iso.h:62: previous declaration of `memmove'
/usr/include/strings.h:26: parse error before `0'
/usr/include/strings.h:26: warning: conflicting types for built-in function `memset'
gmake[1]: *** [xfaces.o] Error 1
gmake[1]: *** Waiting for unfinished jobs....
gmake[1]: *** [xfns.o] Error 1
gmake[1]: Leaving directory `/usr/local/src/installed/emacs-21.1/src'
gmake: *** [src] Error 2

Recent input:
<escape> x c o m i n <tab> r u <tab> <return> s i c 
s t s u <backspace> <backspace> u s <return> C-c C-c 
<return> <escape> x c o m i n <tab> r u <tab> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> r e 
o p <tab> <backspace> <backspace> p o <tab> t <backspace> 
r <tab> <return>

Recent messages:
Loading bytecomp...
Loading cl-macs...done
Loading bytecomp...done
Loading byte-opt...done
Loading jka-compr...done
Loading two-column...done
For information about the GNU Project and its goals, type C-h C-p.
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Loading emacsbug...done

Re: comint-run can't send signals to subjob

[Richard Stallman]

    when running a programme in comint-run it will not accept any signals
    from this buffer, 

I am not sure what it means to "accept signals from a buffer".  But
rather than explain it, please send a precise test case.  That will
show us more precisely than any amount of description.

Please read the Bugs section in the Emacs manual, which provides
guidelines on how to write a bug report to give us the
necessary information so we can fix the bug.

    In file included from /usr/openwin/include/X11/Xos.h:79,
		     from xfaces.c:279:
    /usr/include/strings.h:25: conflicting types for `memmove'
    /usr/include/iso/string_iso.h:62: previous declaration of `memmove'
    /usr/include/strings.h:26: parse error before `0'
    /usr/include/strings.h:26: warning: conflicting types for built-in function `memset'

Would you please try the latest pretest and see if it compiles?  If it
does not, I hope you will tell us what change is needed to make it
compile.  Only a Solaris user can tell us how to fix this problem.

Re: comint-run can't send signals to subjob

[Robert Andersson]

>>>>> "RS" == Richard Stallman <rms@gnu.org> writes:
RS>     when running a programme in comint-run it will not accept any signals
RS>     from this buffer, 

RS> I am not sure what it means to "accept signals from a buffer".  But
RS> rather than explain it, please send a precise test case.  That will
RS> show us more precisely than any amount of description.

RS> Please read the Bugs section in the Emacs manual, which provides
RS> guidelines on how to write a bug report to give us the
RS> necessary information so we can fix the bug.

k, i read the section on understanding bug reporting. thanks. i see
now that my explaination was a tad vague.

the program that i run with comin-run does of course accept signals,
it's comint-run that doesn't send any to the program, eg

	M-x comint-run RET swi RET

to start swi prolog (yes this example only works if you got swi
installed and in your PATH maybe a new ispell could do as well???),
then i want to do

	C-c C-c

that is, comint-interrupt-subjob to send the swi programme an INT
signal. It does not work on emacs version 21.1.1 or 20.7 running on
solaris 9, though on a solaris 8 box i does using the same emacs
binaries.

in my example above, how do i know that it is not swi that rejects
signals? well i can send it a signal from any tty on the same system
with something like

	kill -INT swi-pid

which will work.

actually none of the comint-signals seem to work.

i got an answer from usenet saying that they have had the same problem
with hpux 11... though in this i will not speculate.

i think this was a tad more elaborative don't you think so?

RS>     In file included from /usr/openwin/include/X11/Xos.h:79,
RS> 		     from xfaces.c:279:
RS>     /usr/include/strings.h:25: conflicting types for `memmove'
RS>     /usr/include/iso/string_iso.h:62: previous declaration of `memmove'
RS>     /usr/include/strings.h:26: parse error before `0'
RS>     /usr/include/strings.h:26: warning: conflicting types for built-in function `memset'

RS> Would you please try the latest pretest and see if it compiles?  If it
RS> does not, I hope you will tell us what change is needed to make it
RS> compile.  Only a Solaris user can tell us how to fix this problem.

uhm, i can do prolog... i am terrible at c :)

yours,
/robert

-- 
Systems Administrator
Swedish National Graduate School of Language Technology

Re: comint-run can't send signals to subjob

[Richard Stallman]

    that is, comint-interrupt-subjob to send the swi programme an INT
    signal. It does not work on emacs version 21.1.1 or 20.7 running on
    solaris 9, though on a solaris 8 box i does using the same emacs
    binaries.

That sure sounds like a bug, apparently brought about by a change in
Solaris.  We would like to change Emacs to work on the new Solaris
version, but I think that only a Solaris expert can figure out what to
change.