Clean-up left-overs after 2012-09-23T08:44:20Z!eggert@cs.ucla.edu wrt signal handling.

 src/.gdbinit: Set breakpoint on terminate_due_to_signal, not on
 fatal_error_backtrace.
 src/w32proc.c (sys_kill): Undo last change: don't do anything when
 invoked to deliver SIGABRT to our own process.  This is now
 handled by emacs_raise.

 nt/inc/ms-w32.h (emacs_raise): Redefine to invoke emacs_abort.

Fixes: debbugs:12471

nt/ChangeLog

+2012-09-23  Eli Zaretskii  <eliz@gnu.org>
+
+	* inc/ms-w32.h (emacs_raise): Redefine to invoke emacs_abort.
+
 2012-09-23  Paul Eggert  <eggert@cs.ucla.edu>
 
 	Simplify and avoid signal-handling races (Bug#12471).

nt/inc/ms-w32.h

@@ -204,7 +204,7 @@ struct sigaction {
 #define signal  sys_signal
 
 /* Internal signals.  */
-#define emacs_raise(sig) kill (getpid (), sig)
+#define emacs_raise(sig) emacs_abort()
 
 /* termcap.c calls that are emulated.  */
 #define tputs   sys_tputs

src/.gdbinit

@@ -1214,8 +1214,8 @@ show environment DISPLAY
 show environment TERM
 
 # When debugging, it is handy to be able to "return" from
-# fatal_error_backtrace when an assertion failure is non-fatal.
-break fatal_error_backtrace
+# terminate_due_to_signal when an assertion failure is non-fatal.
+break terminate_due_to_signal
 
 # x_error_quitter is defined only on X.  But window-system is set up
 # only at run time, during Emacs startup, so we need to defer setting

src/ChangeLog

+2012-09-23  Eli Zaretskii  <eliz@gnu.org>
+
+	* .gdbinit: Set breakpoint on terminate_due_to_signal, not on
+	fatal_error_backtrace.
+
+	* w32proc.c (sys_kill): Undo last change: don't do anything when
+	invoked to deliver SIGABRT to our own process.  This is now
+	handled by emacs_raise.
+
 2012-09-23  Juanma Barranquero  <lekktu@gmail.com>
 
 	* w32term.c (w32_read_socket): Remove leftover reference to

src/w32proc.c

@@ -1428,9 +1428,6 @@ sys_kill (int pid, int sig)
   int need_to_free = 0;
   int rc = 0;
 
-  if (pid == getpid () && sig == SIGABRT)
-    emacs_abort ();
-
   /* Only handle signals that will result in the process dying */
   if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
     {