From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-archer.patch

;; Python patches of: http://sourceware.org/gdb/wiki/ProjectArcher

;;=push

http://sourceware.org/gdb/wiki/ProjectArcher

http://sourceware.org/gdb/wiki/ArcherBranchManagement

GIT snapshot:

commit 718a1618b2f691a7f407213bb50f100ac59f91c3

tromey/python

diff --git a/gdb/data-directory/Makefile.in b/gdb/data-directory/Makefile.in

--- a/gdb/data-directory/Makefile.in

+++ b/gdb/data-directory/Makefile.in

@@ -80,6 +80,7 @@ PYTHON_FILE_LIST = \

 	gdb/unwinder.py \

 	gdb/xmethod.py \

 	gdb/command/__init__.py \

+	gdb/command/ignore_errors.py \

 	gdb/command/explore.py \

 	gdb/command/backtrace.py \

 	gdb/command/frame_filters.py \

@@ -92,6 +93,7 @@ PYTHON_FILE_LIST = \

 	gdb/function/as_string.py \

 	gdb/function/caller_is.py \

 	gdb/function/strfns.py \

+	gdb/function/in_scope.py \

 	gdb/printer/__init__.py \

 	gdb/printer/bound_registers.py

diff --git a/gdb/gdb-gdb.gdb.in b/gdb/gdb-gdb.gdb.in

--- a/gdb/gdb-gdb.gdb.in

+++ b/gdb/gdb-gdb.gdb.in

@@ -1,5 +1,15 @@

 echo Setting up the environment for debugging gdb.\n

+# Set up the Python library and "require" command.

+python

+from os.path import abspath

+gdb.datadir = abspath ('@srcdir@/python/lib')

+gdb.pythonlibdir = gdb.datadir

+gdb.__path__ = [gdb.datadir + '/gdb']

+sys.path.insert(0, gdb.datadir)

+end

+source @srcdir@/python/lib/gdb/__init__.py

+

 if !$gdb_init_done

   set variable $gdb_init_done = 1

diff --git a/gdb/python/lib/gdb/command/ignore_errors.py b/gdb/python/lib/gdb/command/ignore_errors.py

new file mode 100644

--- /dev/null

+++ b/gdb/python/lib/gdb/command/ignore_errors.py

@@ -0,0 +1,37 @@

+# Ignore errors in user commands.

+

+# Copyright (C) 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/>.

+

+import gdb

+

+class IgnoreErrorsCommand (gdb.Command):

+    """Execute a single command, ignoring all errors.

+Only one-line commands are supported.

+This is primarily useful in scripts."""

+

+    def __init__ (self):

+        super (IgnoreErrorsCommand, self).__init__ ("ignore-errors",

+                                                    gdb.COMMAND_OBSCURE,

+                                                    # FIXME...

+                                                    gdb.COMPLETE_COMMAND)

+

+    def invoke (self, arg, from_tty):

+        try:

+            gdb.execute (arg, from_tty)

+        except:

+            pass

+

+IgnoreErrorsCommand ()

diff --git a/gdb/python/lib/gdb/function/in_scope.py b/gdb/python/lib/gdb/function/in_scope.py

new file mode 100644

--- /dev/null

+++ b/gdb/python/lib/gdb/function/in_scope.py

@@ -0,0 +1,47 @@

+# In-scope function.

+

+# Copyright (C) 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/>.

+

+import gdb

+

+class InScope (gdb.Function):

+    """Return True if all the given variables or macros are in scope.

+Takes one argument for each variable name to be checked."""

+

+    def __init__ (self):

+        super (InScope, self).__init__ ("in_scope")

+

+    def invoke (self, *vars):

+        if len (vars) == 0:

+            raise (TypeError, "in_scope takes at least one argument")

+

+        # gdb.Value isn't hashable so it can't be put in a map.

+        # Convert to string first.

+        wanted = set (map (lambda x: x.string (), vars))

+        found = set ()

+        block = gdb.selected_frame ().block ()

+        while block:

+            for sym in block:

+                if (sym.is_argument or sym.is_constant

+                      or sym.is_function or sym.is_variable):

+                    if sym.name in wanted:

+                        found.add (sym.name)

+

+            block = block.superblock

+

+        return wanted == found

+

+InScope ()

diff --git a/gdb/testsuite/gdb.python/py-frame.exp b/gdb/testsuite/gdb.python/py-frame.exp

--- a/gdb/testsuite/gdb.python/py-frame.exp

+++ b/gdb/testsuite/gdb.python/py-frame.exp

@@ -95,6 +95,8 @@ gdb_test "python print ('result = %s' % f0.read_var ('a'))" " = 1" "test Frame.r

 gdb_test "python print ('result = %s' % (gdb.selected_frame () == f1))" " = True" "test gdb.selected_frame"

+gdb_test "python print ('result = %s' % (f0.block ()))" "<gdb.Block object at 0x\[\[:xdigit:\]\]+>" "test Frame.block"

+

 # Can read SP register.

 gdb_test "python print ('result = %s' % (gdb.selected_frame ().read_register ('sp') == gdb.parse_and_eval ('\$sp')))" \

   " = True" \

diff --git a/gdb/testsuite/gdb.python/py-value.exp b/gdb/testsuite/gdb.python/py-value.exp

--- a/gdb/testsuite/gdb.python/py-value.exp

+++ b/gdb/testsuite/gdb.python/py-value.exp

@@ -419,6 +419,15 @@ proc test_value_after_death {} {

     "print value's type"

 }

+# Regression test for a cast failure.  The bug was that if we cast a

+# value to its own type, gdb could crash.  This happened because we

+# could end up double-freeing a struct value.

+proc test_cast_regression {} {

+  gdb_test "python v = gdb.Value(5)" "" "create value for cast test"

+  gdb_test "python v = v.cast(v.type)" "" "cast value for cast test"

+  gdb_test "python print(v)" "5" "print value for cast test"

+}

+

 # Regression test for invalid subscript operations.  The bug was that

 # the type of the value was not being checked before allowing a

 # subscript operation to proceed.

@@ -606,6 +615,7 @@ test_value_in_inferior

 test_value_from_buffer

 test_inferior_function_call

 test_value_after_death

+test_cast_regression

 # Test either C or C++ values.