diff -rup src/gdb/testsuite/gdb.base/pipe.c dst/gdb/testsuite/gdb.base/pipe.c
--- src/gdb/testsuite/gdb.base/pipe.c	2011-08-16 22:37:37.785351001 +0530
+++ dst/gdb/testsuite/gdb.base/pipe.c	2011-08-16 22:32:40.213350709 +0530
@@ -0,0 +1,27 @@
+/* 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/>.  */
+
+#include <stdio.h>
+
+int main ()
+{
+#ifdef usestubs
+  set_debug_traps ();
+  breakpoint ();
+#endif
+  return 0; /* end main */
+}
diff -rup src/gdb/testsuite/gdb.base/pipe.exp dst/gdb/testsuite/gdb.base/pipe.exp
--- src/gdb/testsuite/gdb.base/pipe.exp	2011-08-16 22:37:45.969351119 +0530
+++ dst/gdb/testsuite/gdb.base/pipe.exp	2011-08-16 22:35:34.117356781 +0530
@@ -0,0 +1,49 @@
+#   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/>.
+
+#
+# test gdb pipe commands
+#
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set testfile "pipe"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+    untested pipe.exp
+    return -1
+}
+
+if [get_compiler_info ${binfile}] {
+    return -1
+}
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir ${srcdir}/${subdir}
+gdb_load ${binfile}
+
+set end_main [gdb_get_line_number " end main " $srcfile]
+
+if ![runto_main] then {
+    fail "Can't run to main"
+    return 0
+}
+
+gdb_test "pipe | bt | grep \"main\"" "\#0.*main.*().*at.*${srcfile}:${end_main}"
+