🚀 go-pugleaf

Sort does not clean up after itself if it gets a SIGPIPE.  This can be
demonstrated by compiling this program:
#include <stdio.h>
main()
{
   int i;
   for(i = 0; i < 100000; i++)
      printf("%d\n", i);
}
After running it and directing the output to a file "tst.sort", the
command "sort tst.sort | more", followed by a "q" to exit more will
leave files around in /tmp as evidenced by the command:
ls -l /tmp/s*
-rw-r--r--   1 trq      staff       87194 Oct  3 11:11 /tmp/sort1823800001
-rw-r--r--   1 trq      staff       98304 Oct  3 11:11 /tmp/sort1823800002
-rw-r--r--   1 trq      staff       98304 Oct  3 11:11 /tmp/sort1823800003
-rw-r--r--   1 trq      staff       98304 Oct  3 11:11 /tmp/sort1823800004
-rw-r--r--   1 trq      staff       98304 Oct  3 11:11 /tmp/sort1823800005
-rw-r--r--   1 trq      staff       43878 Oct  3 11:11 /tmp/sort1823800006
-rw-r--r--   1 trq      staff       64602 Oct  3 11:11 /tmp/sort1823800007

This is for sort in textutils-1.3 compiled with gcc 2.2.2 on a Sun
Sparcstation ELC running SunOs 4.1.1.  Config.status reads:
DEFS=" -DSTDC_HEADERS -DHAVE_UNISTD_H -DSTRERROR_MISSING"
LIBS="-lmalloc"
CC="gcc"
INSTALL="/bin/install -c"
INSTALLDATA="/bin/install -c -m 644"
RANLIB="ranlib "
LIBOBJS=" memcmp.o stpcpy.o"
ALLOCA=""

The problem is that SIGPIPE is not caught and handled.  A sample patch
to fix this is below.

Tom Quinn        Theoretical Physics, University of Oxford
Internet: 	 trq@dionysos.thphys.ox.ac.uk
JANET:    	 trq@uk.ac.ox.astro
Phone:		 44-865-273956

===================================================================
RCS file: RCS/sort.c,v
retrieving revision 1.1
diff -c -r1.1 sort.c
*** 1.1	1992/10/03 10:11:49
--- sort.c	1992/10/03 10:12:36
***************
*** 1456,1466 ****
--- 1456,1471 ----
    sigaction (SIGHUP, NULL, &oldact);
    if (oldact.sa_handler != SIG_IGN)
      sigaction (SIGHUP, &newact, NULL);
+   sigaction (SIGPIPE, NULL, &oldact);
+   if (oldact.sa_handler != SIG_IGN)
+     sigaction (SIGPIPE, &newact, NULL);
  #else				/* !_POSIX_VERSION */
    if (signal (SIGINT, SIG_IGN) != SIG_IGN)
      signal (SIGINT, sighandler);
    if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
      signal (SIGHUP, sighandler);
+   if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
+     signal (SIGPIPE, sighandler);
  #endif				/* _POSIX_VERSION */
  
    gkey.sword = gkey.eword = -1;