--- /dev/null	2016-04-19 22:52:19.405224269 +0200

+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-thread.exp	2016-04-19 23:22:10.655271756 +0200

@@ -0,0 +1,54 @@

+# Copyright (C) 2016 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/>.

+

+load_lib gdb-python.exp

+

+standard_testfile

+

+if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug pthreads}]} {

+    return -1

+}

+

+# Skip all tests if Python scripting is not enabled.

+if { [skip_python_tests] } { continue }

+

+if ![runto_main] then {

+    return

+}

+gdb_test_no_output "set python print-stack full" \

+    "Set python print-stack to full"

+

+# Load global frame-filters

+set remote_python_file [remote_download host ${srcdir}/${subdir}/${testfile}.py]

+gdb_test_no_output "python execfile ('${remote_python_file}')" \

+    "Load python file"

+

+gdb_breakpoint [gdb_get_line_number "Backtrace end breakpoint"]

+gdb_continue_to_breakpoint "Backtrace end breakpoint"

+

+# #2  0x00007ffff75f228d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113^M

+gdb_test "bt no-filters" " in (\\.?_*clone|thread_start) \[^\r\n\]*" "bt no-filters"

+

+# #2  0x00007ffff75f228d in 941595343737041 () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113^M

+# vs.

+# #2  0x00007ffff75f228d in 941595343737041Traceback (most recent call last):

+#   File "/home/jkratoch/redhat/rhel/gdb/rhel-7.3/gdb-7.6.1/gdb/testsuite/../data-directory/python/gdb/FrameDecorator.py", line 145, in frame_args

+#     return self._base.frame_args()

+#   File "/home/jkratoch/redhat/rhel/gdb/rhel-7.3/gdb-7.6.1/gdb/testsuite/../data-directory/python/gdb/FrameDecorator.py", line 152, in frame_args

+#     return args.fetch_frame_args()

+#   File "/home/jkratoch/redhat/rhel/gdb/rhel-7.3/gdb-7.6.1/gdb/testsuite/../data-directory/python/gdb/FrameDecorator.py", line 276, in fetch_frame_args

+#     block = self.frame.block()

+# RuntimeError: Cannot locate object file for block.

+gdb_test "bt" " in \[0-9\]+ \[^\r\n\]*" "bt with filters"

--- /dev/null	2016-04-19 22:52:19.405224269 +0200

+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-thread.c	2016-04-18 22:44:07.096613437 +0200

@@ -0,0 +1,39 @@

+/* This testcase is part of GDB, the GNU debugger.

+

+   Copyright 2016 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 <pthread.h>

+#include <assert.h>

+

+static void *

+start (void *arg)

+{

+  return; /* Backtrace end breakpoint */

+}

+

+int

+main (void)

+{

+  pthread_t thread1;

+  int i;

+

+  i = pthread_create (&thread1, NULL, start, NULL);

+  assert (i == 0);

+  i = pthread_join (thread1, NULL);

+  assert (i == 0);

+

+  return 0;

+}

--- /dev/null	2016-04-19 22:52:19.405224269 +0200

+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-thread.py	2016-04-19 23:14:03.273994063 +0200

@@ -0,0 +1,56 @@

+# Copyright (C) 2016 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 Python-based

+# frame-filters.

+

+# This test is specifically crafted for RH BZ 1197665.

+

+import gdb

+import itertools

+from gdb.FrameDecorator import FrameDecorator

+import copy

+

+class Reverse_Function (FrameDecorator):

+

+    def __init__(self, fobj):

+        super(Reverse_Function, self).__init__(fobj)

+        self.fobj = fobj

+

+    def function (self):

+        # This function call should not fail.

+        gdb.target_charset ()

+

+        fname = str (self.fobj.function())

+        if (fname == None or fname == ""):

+            return None

+        else:

+            fname = fname[::-1]

+        return fname

+

+class FrameFilter ():

+

+    def __init__ (self):

+        self.name = "Reverse"

+        self.priority = 100

+        self.enabled = True

+        gdb.frame_filters [self.name] = self

+

+    def filter (self, frame_iter):

+        frame_iter = itertools.imap (Reverse_Function,

+                                     frame_iter)

+        return frame_iter

+

+FrameFilter()