gdb/

* cli/cli-cmds.c (shell_escape): Use waitpid.
	* rs6000-nat.c (exec_one_dummy_insn): Likewise.

gdb/testsuite/
	* gdb.base/async-shell.c: New file.
	* gdb.base/async-shell.exp: New file.

gdb/testsuite/gdb.base/async-shell.c

@@ -0,0 +1,22 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+int
+main (void)
+{
+  return sleep (600);
+}