Update.

* posix/Makefile (tests): Add test-vfork.
	* posix/test-vfork.c: New file by Andreas Schwab.

ChangeLog

@@ -1,5 +1,8 @@
 1999-01-15  Ulrich Drepper  <drepper@cygnus.com>
 
+	* posix/Makefile (tests): Add test-vfork.
+	* posix/test-vfork.c: New file by Andreas Schwab.
+
 	* manual/charset.texi: More misspelling fixes.
 	Reported by Tom Tromey <tromey@cygnus.com>.
 

posix/Makefile

@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+# Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -56,7 +56,7 @@ include ../Makeconfig
 
 aux		:= init-posix environ
 tests		:= tstgetopt testfnm runtests wordexp-test runptests	     \
-		   tst-preadwrite
+		   tst-preadwrite test-vfork
 test-srcs	:= globtest
 others		:= getconf
 install-bin	:= getconf

posix/test-vfork.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <error.h>
+#include <errno.h>
+
+void noop (void);
+
+int
+main (void)
+{
+  int pid;
+
+  printf ("Before vfork\n");
+  fflush (stdout);
+  pid = vfork ();
+  if (pid == 0)
+    {
+      /* This will clobber the return pc from vfork in the parent on
+	 machines where it is stored on the stack, if vfork wasn't
+	 implemented correctly, */
+      noop ();
+      _exit (2);
+    }
+  else if (pid < 0)
+    error (1, errno, "vfork");
+  printf ("After vfork (parent)\n");
+  wait (0);
+  exit (0);
+}
+
+void
+noop ()
+{
+}