- raise() no longer resets the signal handler before it invokes the one

currently configured. It merely blocks the delivery of the respective
  signal to prevent recursion.

- raise() now drops into abort() if a signal handler is set to
  SIG_DFL. The exception is in SIGINT delivery, which has the
  effect of printing a different termination message but otherwise
  program flow takes the same path as abort().


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14907 87f5fb63-7c3d-0410-a384-fd976d0f7a62

library/stdlib_abort.c

@@ -1,5 +1,5 @@
 /*
- * $Id: stdlib_abort.c,v 1.3 2005-01-02 09:07:08 obarthel Exp $
+ * $Id: stdlib_abort.c,v 1.4 2005-03-27 10:02:50 obarthel Exp $
  *
  * :ts=4
  *
@@ -48,14 +48,18 @@
 void
 abort(void)
 {
+	/* Try to call the signal handler that might be in charge of
+	   handling cleanup operations, etc. */
 	raise(SIGABRT);
 
+	/* If the signal handler returns it means that we still have
+	   to terminate the program. */
+
 	__check_abort_enabled = FALSE;
 
 	__print_termination_message(NULL);
 
 	/* Note that we drop into the exit() function which
-	 * does not trigger the exit trap.
-	 */
+	   does not trigger the exit trap. */
 	_exit(EXIT_FAILURE);
 }