[PATCH 1/3] New test case for PR12929.

[Yao Qi <yao@codesourcery.com>]

PR12929 was fixed by this patch,

  Flip the interpreter to synchronously wait for commands finishing, in command lists and similars
  http://sourceware.org/ml/gdb-patches/2011-09/msg00037.html

but we don't have a test case for it.  My following patch will affect this
part, so I add a test case to make sure my patch doesn't break anything.

gdb/testsuite:

	* gdb.python/py-sync-interp.c: New.
	* gdb.python/py-sync-interp.exp: New.
---
 gdb/testsuite/gdb.python/py-sync-interp.c   |   47 +++++++++++++++++++
 gdb/testsuite/gdb.python/py-sync-interp.exp |   67 +++++++++++++++++++++++++++
 2 files changed, 114 insertions(+), 0 deletions(-)
 create mode 100644 gdb/testsuite/gdb.python/py-sync-interp.c
 create mode 100644 gdb/testsuite/gdb.python/py-sync-interp.exp

diff --git a/gdb/testsuite/gdb.python/py-sync-interp.c b/gdb/testsuite/gdb.python/py-sync-interp.c
new file mode 100644
index 0000000..716f43d
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-sync-interp.c
@@ -0,0 +1,47 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2012 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/>.  */
+
+/* This program is intended to be started outside of gdb, and then
+   attached to by gdb.  It loops for a while, but not forever.  */
+
+#include <unistd.h>
+
+static void
+foo1 (void)
+{
+  sleep (100);
+}
+
+static void
+foo2 (void)
+{
+  foo1 ();
+}
+
+static void
+foo3 (void)
+{
+  foo2 ();
+}
+
+int
+main (void)
+{
+
+  foo3 ();
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.python/py-sync-interp.exp b/gdb/testsuite/gdb.python/py-sync-interp.exp
new file mode 100644
index 0000000..a094b96
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-sync-interp.exp
@@ -0,0 +1,67 @@
+# Copyright (C) 2012 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/>.
+
+# This file is part of the GDB testsuite.  It tests the mechanism
+# for defining the prompt in Python.
+
+# This test case is copied from PR14135.
+# http://sourceware.org/bugzilla/show_bug.cgi?id=14135
+
+set testfile "py-sync-interp"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+# We need to use TCL's exec to get the pid.
+if [is_remote target] then {
+    return 0
+}
+
+load_lib gdb-python.exp
+
+# Start with a fresh gdb.
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+
+# Skip all tests if Python scripting is not enabled.
+if { [skip_python_tests] } { continue }
+gdb_exit
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+    return -1
+}
+
+# Start the program running and then wait for a bit, to be sure
+# that it can be attached to.
+set testpid [eval exec $binfile &]
+exec sleep 2
+if { [istarget "*-*-cygwin*"] } {
+    # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
+    # different due to the way fork/exec works.
+    set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
+}
+
+# Test command 'where' is executed when command 'attach' is done, otherwise
+# function 'sleep' may not show up in backtrace.
+
+gdb_test_sequence "python gdb.execute(\"attach $testpid\"); gdb.execute(\"where\")" \
+    "attach and where" {
+	"\[\r\n\]#.* in sleep \\(\\) "
+	"\[\r\n\]#.* in foo1 \\(\\) at "
+	"\[\r\n\]#.* in foo2 \\(\\) at "
+	"\[\r\n\]#.* in foo3 \\(\\) at "
+	"\[\r\n\]#.* in main \\(\\) at "
+}
-- 
1.7.0.4