From 96cc0ae8e0013ab85245c7fdf82f500d6578be91 Mon Sep 17 00:00:00 2001
From: Jerome Guitton <guitton@adacore.com>
Date: Mon, 8 Sep 2008 15:54:29 +0000
Subject: [PATCH] 	* gdb.base/stack-checking.c: New file. 	*
 gdb.base/stack-checking.exp: New file.

---
 gdb/testsuite/ChangeLog                   |  5 +++
 gdb/testsuite/gdb.base/stack-checking.c   | 49 ++++++++++++++++++++++++++++
 gdb/testsuite/gdb.base/stack-checking.exp | 53 +++++++++++++++++++++++++++++++
 3 files changed, 107 insertions(+)
 create mode 100644 gdb/testsuite/gdb.base/stack-checking.c
 create mode 100644 gdb/testsuite/gdb.base/stack-checking.exp

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 3fd991b..d28f725 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2008-09-08  Jerome Guitton  <guitton@adacore.com>
+
+	* gdb.base/stack-checking.c: New file.
+	* gdb.base/stack-checking.exp: New file.
+
 2008-09-05  Thiago Jung Bauermann  <bauerman@br.ibm.com>
 
 	* gdb.arch/altivec-abi.exp: Remove extra verbose call.
diff --git a/gdb/testsuite/gdb.base/stack-checking.c b/gdb/testsuite/gdb.base/stack-checking.c
new file mode 100644
index 0000000..027d30b
--- /dev/null
+++ b/gdb/testsuite/gdb.base/stack-checking.c
@@ -0,0 +1,49 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2008 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 file to be compiled with -fstack-check, for testing "bt" against
+  different stack checking prologue sequences.
+ */
+
+int i = 0;
+
+void
+small_frame ()
+{
+  i++; /* set breakpoint here */
+}
+
+void medium_frame ()
+{
+  char S [16384];
+  small_frame ();
+}
+
+void big_frame ()
+{
+  char S [524188];
+  small_frame ();
+}
+
+void
+main ()
+{
+  small_frame ();
+  medium_frame ();
+  big_frame ();
+}
diff --git a/gdb/testsuite/gdb.base/stack-checking.exp b/gdb/testsuite/gdb.base/stack-checking.exp
new file mode 100644
index 0000000..74c0c0c
--- /dev/null
+++ b/gdb/testsuite/gdb.base/stack-checking.exp
@@ -0,0 +1,53 @@
+# Copyright 2008 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/>.
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+set testfile "stack-checking"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [concat debug additional_flags=-fstack-check nowarnings]] != "" } {
+     untested stack-checking.exp
+     return -1
+}
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+if ![runto_main] then {
+    fail "Can't run to main"
+    return 0
+}
+
+
+# Test that the debugger is able to unwind to "main" at the next breakpoint
+# hit. The frame number of "main" should be passed into MAIN_FRAME_NUMBER."
+proc backtrace_test {name main_frame_number} {
+    gdb_continue_to_breakpoint "breakpoint for $name"
+    gdb_test "bt" "#${main_frame_number}.*in main ().*"
+}
+
+gdb_breakpoint [gdb_get_line_number "set breakpoint here"]
+backtrace_test "small frame" "1"
+backtrace_test "medium frame" "2"
+backtrace_test "big frame" "2"
-- 
2.7.4