Simplify redefinition of 'abort' (Bug#12316).

Do not try to redefine the 'abort' function.  Instead, redo
the code so that it calls 'emacs_abort' rather than 'abort'.
This removes the need for the NO_ABORT configure-time macro
and makes it easier to change the abort code to do a backtrace.
* configure.ac (NO_ABRT): Remove.
* admin/CPP-DEFINES (NO_ABORT): Remove.
* nt/inc/ms-w32.h (w32_abort) [HAVE_NTGUI]: Remove.
* src/.gdbinit: Just stop at emacs_abort, not at w32_abort or abort.
* src/emacs.c (abort) [!DOS_NT && !NO_ABORT]:
Remove; sysdep.c's emacs_abort now takes its place.
* src/lisp.h (emacs_abort): New decl.  All calls from Emacs code to
'abort' changed to use 'emacs_abort'.
* src/msdos.c (dos_abort) [defined abort]: Remove; not used.
(abort) [!defined abort]: Rename to ...
(emacs_abort): ... new name.
* src/sysdep.c (emacs_abort) [!HAVE_NTGUI]: New function, taking
the place of the old 'abort' in emacs.c.
* src/w32.c, src/w32fns.c (abort): Do not #undef.
* src/w32.c (emacs_abort): Rename from w32_abort.

1 files changed, 7 insertions, 7 deletions

diff --git a/src/process.c b/src/process.c
index 2d144b410ed..5677da36881 100644
--- a/src/process.c
+++ b/src/process.c
@@ -1577,7 +1577,7 @@ static Lisp_Object
 start_process_unwind (Lisp_Object proc)
 {
   if (!PROCESSP (proc))
-    abort ();
+    emacs_abort ();
 
   /* Was PROC started successfully?
      -2 is used for a pty with no process, eg for gdb.  */
@@ -2550,7 +2550,7 @@ static Lisp_Object
 make_serial_process_unwind (Lisp_Object proc)
 {
   if (!PROCESSP (proc))
-    abort ();
+    emacs_abort ();
   remove_process (proc);
   return Qnil;
 }
@@ -3387,7 +3387,7 @@ usage: (make-network-process &rest ARGS)  */)
       if (socktype == SOCK_DGRAM)
         {
           if (datagram_address[s].sa)
-            abort ();
+            emacs_abort ();
           datagram_address[s].sa = xmalloc (lres->ai_addrlen);
           datagram_address[s].len = lres->ai_addrlen;
           if (is_server)
@@ -3973,7 +3973,7 @@ deactivate_process (Lisp_Object proc)
           FD_CLR (inchannel, &connect_wait_mask);
           FD_CLR (inchannel, &write_mask);
           if (--num_pending_connects < 0)
-            abort ();
+            emacs_abort ();
         }
 #endif
       if (inchannel == max_process_desc)
@@ -4752,7 +4752,7 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
                  Cleanup occurs c/o status_notify after SIGCLD. */
               no_avail = 1; /* Cannot depend on values returned */
 #else
-              abort ();
+              emacs_abort ();
 #endif
             }
           else
@@ -4993,7 +4993,7 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
               FD_CLR (channel, &connect_wait_mask);
               FD_CLR (channel, &write_mask);
               if (--num_pending_connects < 0)
-                abort ();
+                emacs_abort ();
 
               proc = chan_process[channel];
               if (NILP (proc))
@@ -6354,7 +6354,7 @@ process has been transmitted to the serial port.  */)
 #endif /* not HAVE_SHUTDOWN */
       new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0);
       if (new_outfd < 0)
-        abort ();
+        emacs_abort ();
       old_outfd = XPROCESS (proc)->outfd;
 
       if (!proc_encode_coding_system[new_outfd])