diff -up Python-2.7.3/Tools/gdb/libpython.py.fix-fake-repr-in-gdb-hooks Python-2.7.3/Tools/gdb/libpython.py

--- Python-2.7.3/Tools/gdb/libpython.py.fix-fake-repr-in-gdb-hooks	2013-02-19 17:21:33.541181366 -0500

+++ Python-2.7.3/Tools/gdb/libpython.py	2013-02-19 17:21:42.090180782 -0500

@@ -105,6 +105,24 @@ class TruncatedStringIO(object):

     def getvalue(self):

         return self._val

+class FakeProxy(object):

+    """

+    Class representing a non-descript PyObject* value in the inferior

+    process for when we don't have a custom scraper, intended to have

+    a sane repr().

+    """

+    def __init__(self, tp_name, address):

+        self.tp_name = tp_name

+        self.address = address

+

+    def __repr__(self):

+        # For the NULL pointer, we have no way of knowing a type, so

+        # special-case it as per

+        # http://bugs.python.org/issue8032#msg100882

+        if self.address == 0:

+            return '0x0'

+        return '<%s at remote 0x%x>' % (self.tp_name, self.address)

+

 class PyObjectPtr(object):

     """

     Class wrapping a gdb.Value that's a either a (PyObject*) within the

@@ -232,28 +250,8 @@ class PyObjectPtr(object):

         visiting object graphs with loops).  Analogous to Py_ReprEnter and

         Py_ReprLeave

         '''

-

-        class FakeRepr(object):

-            """

-            Class representing a non-descript PyObject* value in the inferior

-            process for when we don't have a custom scraper, intended to have

-            a sane repr().

-            """

-

-            def __init__(self, tp_name, address):

-                self.tp_name = tp_name

-                self.address = address

-

-            def __repr__(self):

-                # For the NULL pointer, we have no way of knowing a type, so

-                # special-case it as per

-                # http://bugs.python.org/issue8032#msg100882

-                if self.address == 0:

-                    return '0x0'

-                return '<%s at remote 0x%x>' % (self.tp_name, self.address)

-

-        return FakeRepr(self.safe_tp_name(),

-                        long(self._gdbval))

+        return FakeProxy(self.safe_tp_name(),

+                         long(self._gdbval))

     def write_repr(self, out, visited):

         '''

@@ -384,7 +382,7 @@ def _write_instance_repr(out, visited, n

             if not first:

                 out.write(', ')

             first = False

-            out.write(pyop_arg.proxyval(visited))

+            out.write(str(pyop_arg.proxyval(visited)))

             out.write('=')

             pyop_val.write_repr(out, visited)

         out.write(')')

@@ -785,6 +783,8 @@ class PyNoneStructPtr(PyObjectPtr):

     def proxyval(self, visited):

         return None

+class CantReadFilename(ValueError):

+    pass

 class PyFrameObjectPtr(PyObjectPtr):

     _typename = 'PyFrameObject'

@@ -861,7 +861,10 @@ class PyFrameObjectPtr(PyObjectPtr):

         '''Get the path of the current Python source file, as a string'''

         if self.is_optimized_out():

             return '(frame information optimized out)'

-        return self.co_filename.proxyval(set())

+        value = self.co_filename.proxyval(set())

+        if isinstance(value, FakeProxy):

+            raise CantReadFilename('unable to extract filename)')

+        return value

     def current_line_num(self):

         '''Get current line number as an integer (1-based)

@@ -907,7 +910,7 @@ class PyFrameObjectPtr(PyObjectPtr):

                 out.write(', ')

             first = False

-            out.write(pyop_name.proxyval(visited))

+            out.write(str(pyop_name.proxyval(visited)))

             out.write('=')

             pyop_value.write_repr(out, visited)

@@ -1252,8 +1255,11 @@ class Frame(object):

             if pyop:

                 sys.stdout.write('#%i %s\n' % (self.get_index(), pyop.get_truncated_repr(MAX_OUTPUT_LEN)))

                 if not pyop.is_optimized_out():

-                    line = pyop.current_line()

-                    sys.stdout.write('    %s\n' % line.strip())

+                    try:

+                        line = pyop.current_line()

+                        sys.stdout.write('    %s\n' % line.strip())

+                    except CantReadFilename:

+                        sys.stdout.write('    %s\n' % '(unable to read filename)')

             else:

                 sys.stdout.write('#%i (unable to read python frame information)\n' % self.get_index())

         else:

@@ -1303,7 +1309,11 @@ class PyList(gdb.Command):

             print('Unable to read information on python frame')

             return

-        filename = pyop.filename()

+        try:

+            filename = pyop.filename()

+        except CantReadFilename:

+            print("Unable to extract filename from python frame")

+            return

         lineno = pyop.current_line_num()

         if start is None: