Release 1.40.0

[SVN r55802]

CMakeLists.txt

@@ -1,3 +1,9 @@
+#
+# Copyright Troy D. Straszheim
+#
+# Distributed under the Boost Software License, Version 1.0.
+# See http://www.boost.org/LICENSE_1_0.txt
+#
 if (PYTHON_LIBRARIES)
   include_directories(${PYTHON_INCLUDE_PATH})
 

doc/tutorial/doc/tutorial.qbk

@@ -186,10 +186,6 @@ And so on... Finally:
 Or something similar. If all is well, you should now have built the DLLs and
 run the Python program.
 
-[note Starting from Boost 1.35, bjam erases the generated executables
-(e.g. pyd file) after the test has concluded to conserve disk space.
-To keep bjam from doing that, pass --preserve-test-targets to bjam.]
-
 [:[*There you go... Have fun!]]
 
 [endsect]

example/tutorial/Jamroot

@@ -2,6 +2,15 @@
 # Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
+import python ;
+
+if ! [ python.configured ]
+{
+    ECHO "notice: no Python configured in user-config.jam" ;
+    ECHO "notice: will use default configuration" ;
+    using python ;
+}
+
 # Specify the path to the Boost project.  If you move this project,
 # adjust this path to refer to the Boost root directory.
 use-project boost

include/boost/python/detail/decorated_type_id.hpp

@@ -55,8 +55,8 @@ inline decorated_type_info::decorated_type_info(type_info base_t, decoration dec
 inline bool decorated_type_info::operator<(decorated_type_info const& rhs) const
 {
     return m_decoration < rhs.m_decoration
-        || m_decoration == rhs.m_decoration
-           && m_base_type < rhs.m_base_type;
+      || (m_decoration == rhs.m_decoration
+          && m_base_type < rhs.m_base_type);
 }
 
 inline bool decorated_type_info::operator==(decorated_type_info const& rhs) const

include/boost/python/object_operators.hpp

@@ -60,7 +60,9 @@ inline
 object_operators<U>::operator bool_type() const
 {
     object_cref2 x = *static_cast<U const*>(this);
-    return PyObject_IsTrue(x.ptr()) ? &object::ptr : 0;
+    int is_true = PyObject_IsTrue(x.ptr());
+    if (is_true < 0) throw_error_already_set();
+    return is_true ? &object::ptr : 0;
 }
 
 template <class U>
@@ -68,7 +70,9 @@ inline bool
 object_operators<U>::operator!() const
 {
     object_cref2 x = *static_cast<U const*>(this);
-    return !PyObject_IsTrue(x.ptr());
+    int is_true = PyObject_IsTrue(x.ptr());
+    if (is_true < 0) throw_error_already_set();
+    return !is_true;
 }
 
 # define BOOST_PYTHON_COMPARE_OP(op, opid)                              \

src/CMakeLists.txt

@@ -1,3 +1,9 @@
+#
+# Copyright Troy D. Straszheim
+#
+# Distributed under the Boost Software License, Version 1.0.
+# See http://www.boost.org/LICENSE_1_0.txt
+#
 if (PYTHON_DEBUG_LIBRARIES AND BUILD_BOOST_PYTHON)
   # We have detected that there might be Python debug libraries
   # available, but check for ourselves whether this is true by trying

src/converter/builtin_converters.cpp

@@ -155,10 +155,27 @@ namespace
   {
       static T extract(PyObject* intermediate)
       {
-          return numeric_cast<T>(
-              PyLong_Check(intermediate)
-              ? PyLong_AsUnsignedLong(intermediate)
-              : PyInt_AS_LONG(intermediate));
+          if (PyLong_Check(intermediate)) {
+              // PyLong_AsUnsignedLong() checks for negative overflow, so no
+              // need to check it here.
+              unsigned long result = PyLong_AsUnsignedLong(intermediate);
+              if (PyErr_Occurred())
+                  throw_error_already_set();
+              return numeric_cast<T>(result);
+          } else {
+              // None of PyInt_AsUnsigned*() functions check for negative
+              // overflow, so use PyInt_AS_LONG instead and check if number is
+              // negative, issuing the exception appropriately.
+              long result = PyInt_AS_LONG(intermediate);
+              if (PyErr_Occurred())
+                  throw_error_already_set();
+              if (result < 0) {
+                  PyErr_SetString(PyExc_OverflowError, "can't convert negative"
+                                  " value to unsigned");
+                  throw_error_already_set();
+              }
+              return numeric_cast<T>(result);
+          }
       }
   };
 

src/exec.cpp

@@ -5,6 +5,7 @@
 
 #include <boost/python/exec.hpp>
 #include <boost/python/borrowed.hpp>
+#include <boost/python/dict.hpp>
 #include <boost/python/extract.hpp>
 #include <boost/python/handle.hpp>
 
@@ -15,6 +16,16 @@ namespace python
 
 object BOOST_PYTHON_DECL eval(str string, object global, object local)
 {
+  // Set suitable default values for global and local dicts.
+  object none;
+  if (global.ptr() == none.ptr())
+  {
+    if (PyObject *g = PyEval_GetGlobals())
+      global = object(detail::borrowed_reference(g));
+    else
+      global = dict();
+  }
+  if (local.ptr() == none.ptr()) local = global;
   // should be 'char const *' but older python versions don't use 'const' yet.
   char *s = python::extract<char *>(string);
   PyObject* result = PyRun_String(s, Py_eval_input, global.ptr(), local.ptr());
@@ -24,6 +35,16 @@ object BOOST_PYTHON_DECL eval(str string, object global, object local)
 
 object BOOST_PYTHON_DECL exec(str string, object global, object local)
 {
+  // Set suitable default values for global and local dicts.
+  object none;
+  if (global.ptr() == none.ptr())
+  {
+    if (PyObject *g = PyEval_GetGlobals())
+      global = object(detail::borrowed_reference(g));
+    else
+      global = dict();
+  }
+  if (local.ptr() == none.ptr()) local = global;
   // should be 'char const *' but older python versions don't use 'const' yet.
   char *s = python::extract<char *>(string);
   PyObject* result = PyRun_String(s, Py_file_input, global.ptr(), local.ptr());
@@ -31,11 +52,40 @@ object BOOST_PYTHON_DECL exec(str string, object global, object local)
   return object(detail::new_reference(result));
 }
 
+object BOOST_PYTHON_DECL exec_statement(str string, object global, object local)
+{
+  // Set suitable default values for global and local dicts.
+  object none;
+  if (global.ptr() == none.ptr())
+  {
+    if (PyObject *g = PyEval_GetGlobals())
+      global = object(detail::borrowed_reference(g));
+    else
+      global = dict();
+  }
+  if (local.ptr() == none.ptr()) local = global;
+  // should be 'char const *' but older python versions don't use 'const' yet.
+  char *s = python::extract<char *>(string);
+  PyObject* result = PyRun_String(s, Py_single_input, global.ptr(), local.ptr());
+  if (!result) throw_error_already_set();
+  return object(detail::new_reference(result));
+}
+
 // Execute python source code from file filename.
 // global and local are the global and local scopes respectively,
 // used during execution.
 object BOOST_PYTHON_DECL exec_file(str filename, object global, object local)
 {
+  // Set suitable default values for global and local dicts.
+  object none;
+  if (global.ptr() == none.ptr())
+  {
+    if (PyObject *g = PyEval_GetGlobals())
+      global = object(detail::borrowed_reference(g));
+    else
+      global = dict();
+  }
+  if (local.ptr() == none.ptr()) local = global;
   // should be 'char const *' but older python versions don't use 'const' yet.
   char *f = python::extract<char *>(filename);
   // Let python open the file to avoid potential binary incompatibilities.

src/object/class.cpp

@@ -506,13 +506,12 @@ namespace objects
       // Build a tuple of the base Python type objects. If no bases
       // were declared, we'll use our class_type() as the single base
       // class.
-      std::size_t const num_bases = (std::max)(num_types - 1, static_cast<std::size_t>(1));
-      assert(num_bases <= ssize_t_max);
-      handle<> bases(PyTuple_New(static_cast<ssize_t>(num_bases)));
+      ssize_t const num_bases = (std::max)(num_types - 1, static_cast<std::size_t>(1));
+      handle<> bases(PyTuple_New(num_bases));
 
-      for (std::size_t i = 1; i <= num_bases; ++i)
+      for (ssize_t i = 1; i <= num_bases; ++i)
       {
-          type_handle c = (i >= num_types) ? class_type() : get_class(types[i]);
+          type_handle c = (i >= static_cast<ssize_t>(num_types)) ? class_type() : get_class(types[i]);
           // PyTuple_SET_ITEM steals this reference
           PyTuple_SET_ITEM(bases.get(), static_cast<ssize_t>(i - 1), upcast<PyObject>(c.release()));
       }

src/object/enum.cpp

@@ -14,7 +14,7 @@
 #include <boost/python/object_protocol.hpp>
 #include <structmember.h>
 
-namespace boost { namespace python { namespace objects { 
+namespace boost { namespace python { namespace objects {
 
 struct enum_object
 {
@@ -43,7 +43,7 @@ extern "C"
             char* name = PyString_AsString(self->name);
             if (name == 0)
                 return 0;
-            
+
             return PyString_FromFormat("%s.%s.%s", mod, self_->ob_type->tp_name, name);
         }
     }
@@ -139,15 +139,16 @@ namespace
       dict d;
       d["__slots__"] = tuple();
       d["values"] = dict();
+      d["names"] = dict();
 
       object module_name = module_prefix();
       if (module_name)
          d["__module__"] = module_name;
       if (doc)
          d["__doc__"] = doc;
-      
+
       object result = (object(metatype))(name, make_tuple(base), d);
-      
+
       scope().attr(name) = result;
 
       return result;
@@ -167,7 +168,7 @@ enum_base::enum_base(
     converter::registration& converters
         = const_cast<converter::registration&>(
             converter::registry::lookup(id));
-            
+
     converters.m_class_object = downcast<PyTypeObject>(this->ptr());
     converter::registry::insert(to_python, id);
     converter::registry::insert(convertible, construct, id);
@@ -186,23 +187,24 @@ void enum_base::add_value(char const* name_, long value)
 
     dict d = extract<dict>(this->attr("values"))();
     d[value] = x;
-    
+
     // Set the name field in the new enum instanec
     enum_object* p = downcast<enum_object>(x.ptr());
     Py_XDECREF(p->name);
     p->name = incref(name.ptr());
+
+    dict names_dict = extract<dict>(this->attr("names"))();
+    names_dict[x.attr("name")] = x;
 }
 
 void enum_base::export_values()
 {
-    dict d = extract<dict>(this->attr("values"))();
-    list values = d.values();
+    dict d = extract<dict>(this->attr("names"))();
+    list items = d.items();
     scope current;
-    
-    for (unsigned i = 0, max = len(values); i < max; ++i)
-    {
-        api::setattr(current, object(values[i].attr("name")), values[i]);
-    }
+
+    for (unsigned i = 0, max = len(items); i < max; ++i)
+        api::setattr(current, items[i][0], items[i][1]);
  }
 
 PyObject* enum_base::to_python(PyTypeObject* type_, long x)

src/object/function.cpp

@@ -166,7 +166,7 @@ PyObject* function::call(PyObject* args, PyObject* keywords) const
                     else
                     {
                         // build a new arg tuple, will adjust its size later
-                        assert(max_arity <= ssize_t_max);
+                        assert(max_arity <= static_cast<std::size_t>(ssize_t_max));
                         inner_args = handle<>(
                             PyTuple_New(static_cast<ssize_t>(max_arity)));
 

src/object/function_doc_signature.cpp

@@ -52,9 +52,9 @@ namespace boost { namespace python { namespace objects {
             //check if the argument default values are the same
             bool f1_has_names = bool(f1->m_arg_names);
             bool f2_has_names = bool(f2->m_arg_names);
-            if ( f1_has_names && f2_has_names && f2->m_arg_names[i-1]!=f1->m_arg_names[i-1]
-                || f1_has_names && !f2_has_names
-                || !f1_has_names && f2_has_names && f2->m_arg_names[i-1]!=python::object()
+            if ( (f1_has_names && f2_has_names && f2->m_arg_names[i-1]!=f1->m_arg_names[i-1])
+                 || (f1_has_names && !f2_has_names)
+                 || (!f1_has_names && f2_has_names && f2->m_arg_names[i-1]!=python::object())
                 )
                 return false;
         }

src/str.cpp

@@ -26,7 +26,7 @@ namespace {
 
     ssize_t str_size_as_py_ssize_t(std::size_t n)
     {
-      if (n > ssize_t_max)
+      if (n > static_cast<std::size_t>(ssize_t_max))
       {
           throw std::range_error("str size > ssize_t_max");
       }

test/CMakeLists.txt

@@ -1,3 +1,9 @@
+#
+# Copyright Troy D. Straszheim
+#
+# Distributed under the Boost Software License, Version 1.0.
+# See http://www.boost.org/LICENSE_1_0.txt
+#
 macro(bpl_test TESTNAME)
   parse_arguments(BPL_TEST
     "ARGS"
@@ -13,25 +19,43 @@ macro(bpl_test TESTNAME)
     cdr(BPL_TEST_DEFAULT_ARGS ${BPL_TEST_DEFAULT_ARGS})
 
     get_filename_component(BPL_TEST_PYBASE ${BPL_TEST_PYSOURCE} NAME_WE)
+
+    # Process all the .cpp file and extension module names
     foreach(SRC ${BPL_TEST_DEFAULT_ARGS})
       get_filename_component(BPL_SRC_EXT ${SRC} EXT)
       if (BPL_SRC_EXT STREQUAL ".cpp")
+
         # Build a Python extension module from this source file
         get_filename_component(BPL_SRC_NAME ${SRC} NAME_WE)
+        
         if(BPL_TEST_PYBASE STREQUAL "${BPL_SRC_NAME}")
-          boost_python_extension(${BPL_SRC_NAME}_ext ${SRC})
+          set(BPL_EXTENSION_MODULE ${BPL_SRC_NAME}_ext)
         else(BPL_TEST_PYBASE STREQUAL "${BPL_SRC_NAME}")
-          boost_python_extension(${BPL_SRC_NAME} ${SRC})
+          set(BPL_EXTENSION_MODULE ${BPL_SRC_NAME})
         endif(BPL_TEST_PYBASE STREQUAL "${BPL_SRC_NAME}")
+
+        boost_python_extension(${BPL_EXTENSION_MODULE} ${SRC})
+
+      else (BPL_SRC_EXT STREQUAL ".cpp")
+        set(BPL_EXTENSION_MODULE ${SRC})
+
       endif (BPL_SRC_EXT STREQUAL ".cpp")
+
+      add_dependencies(${PROJECT_NAME}-test ${BPL_EXTENSION_MODULE})
     endforeach(SRC ${BPL_TEST_DEFAULT_ARGS})
+
   else (BPL_TEST_DEFAULT_ARGS)
+
     set(BPL_TEST_PYSOURCE "${TESTNAME}.py")
 
     # Build a Python extension module from this source file
     boost_python_extension(${TESTNAME}_ext "${TESTNAME}.cpp")
+    add_dependencies(${PROJECT_NAME}-test ${TESTNAME}_ext)
+
   endif(BPL_TEST_DEFAULT_ARGS)
 
+  add_dependencies(${PROJECT_NAME}-test ${BPL_TEST_PYSOURCE})
+
   # We'll need the full patch to run the Python test
   set(BPL_TEST_PYSOURCE ${CMAKE_CURRENT_SOURCE_DIR}/${BPL_TEST_PYSOURCE})
     

test/enum.cpp

@@ -12,7 +12,7 @@
 #endif 
 using namespace boost::python;
 
-enum color { red = 1, green = 2, blue = 4 };
+enum color { red = 1, green = 2, blue = 4, blood = 1 };
 
 #if BOOST_WORKAROUND(__MWERKS__, <= 0x2407)
 namespace boost  // Pro7 has a hard time detecting enums
@@ -34,6 +34,7 @@ BOOST_PYTHON_MODULE(enum_ext)
         .value("red", red)
         .value("green", green)
         .value("blue", blue)
+        .value("blood", blood)
         .export_values()
         ;
     

test/enum.py

@@ -4,8 +4,8 @@
 '''
 >>> from enum_ext import *
 
->>> identity(color.red)
-enum_ext.color.red
+>>> identity(color.red) # in case of duplicated enums it always take the last enum
+enum_ext.color.blood
 
 >>> identity(color.green)
 enum_ext.color.green
@@ -13,8 +13,8 @@ enum_ext.color.green
 >>> identity(color.blue)
 enum_ext.color.blue
 
->>> identity(color(1))
-enum_ext.color.red
+>>> identity(color(1)) # in case of duplicated enums it always take the last enum
+enum_ext.color.blood
 
 >>> identity(color(2))
 enum_ext.color.green
@@ -28,7 +28,7 @@ enum_ext.color.blue
   --- check export to scope ---
 
 >>> identity(red)
-enum_ext.color.red
+enum_ext.color.blood
 
 >>> identity(green)
 enum_ext.color.green
@@ -42,10 +42,18 @@ enum_ext.color.blue
 
 >>> c = colorized()
 >>> c.x
-enum_ext.color.red
+enum_ext.color.blood
 >>> c.x = green
 >>> c.x
 enum_ext.color.green
+>>> red == blood
+True
+>>> red == green
+False
+>>> hash(red) == hash(blood)
+True
+>>> hash(red) == hash(green)
+False
 '''
 
 # pickling of enums only works with Python 2.3 or higher

test/exec.cpp

@@ -108,46 +108,73 @@ void exec_test_error()
   python::object result = python::exec("print unknown \n", global, global);
 }
 
-int main(int argc, char **argv)
+void exercise_embedding_html()
 {
-  BOOST_TEST(argc == 2);
-  std::string script = argv[1];
-  // Initialize the interpreter
-  Py_Initialize();
+    using namespace boost::python;
+    /* code from: libs/python/doc/tutorial/doc/tutorial.qbk
+       (generates libs/python/doc/tutorial/doc/html/python/embedding.html)
+     */
+    object main_module = import("__main__");
+    object main_namespace = main_module.attr("__dict__");
 
-  if (python::handle_exception(eval_test) ||
-      python::handle_exception(exec_test) ||
-      python::handle_exception(boost::bind(exec_file_test, script)))
+    object ignored = exec("hello = file('hello.txt', 'w')\n"
+                          "hello.write('Hello world!')\n"
+                          "hello.close()",
+                          main_namespace);
+}
+
+void check_pyerr(bool pyerr_expected=false)
+{
+  if (PyErr_Occurred())
   {
-    if (PyErr_Occurred())
-    {
+    if (!pyerr_expected) {
       BOOST_ERROR("Python Error detected");
       PyErr_Print();
     }
-    else
-    {
-        BOOST_ERROR("A C++ exception was thrown  for which "
-                    "there was no exception handler registered.");
-    }
-  }
-  
-  if (python::handle_exception(exec_test_error))
-  {
-    if (PyErr_Occurred())
-    {
-      PyErr_Print();
-    }
-    else
-    {
-        BOOST_ERROR("A C++ exception was thrown  for which "
-                    "there was no exception handler registered.");
+    else {
+      PyErr_Clear();
     }
   }
   else
   {
-      BOOST_ERROR("Python exception expected, but not seen.");
+    BOOST_ERROR("A C++ exception was thrown  for which "
+                "there was no exception handler registered.");
+  }
+}
+
+int main(int argc, char **argv)
+{
+  BOOST_TEST(argc == 2 || argc == 3);
+  std::string script = argv[1];
+  // Initialize the interpreter
+  Py_Initialize();
+
+  if (python::handle_exception(eval_test)) {
+    check_pyerr();
+  }
+  else if(python::handle_exception(exec_test)) {
+    check_pyerr();
+  }
+  else if (python::handle_exception(boost::bind(exec_file_test, script))) {
+    check_pyerr();
   }
   
+  if (python::handle_exception(exec_test_error))
+  {
+    check_pyerr(/*pyerr_expected*/ true);
+  }
+  else
+  {
+    BOOST_ERROR("Python exception expected, but not seen.");
+  }
+
+  if (argc > 2) {
+    // The main purpose is to test compilation. Since this test generates
+    // a file and I (rwgk) am uncertain about the side-effects, run it only
+    // if explicitly requested.
+    exercise_embedding_html();
+  }
+
   // Boost.Python doesn't support Py_Finalize yet.
   // Py_Finalize();
   return boost::report_errors();

test/test_builtin_converters.cpp

@@ -17,6 +17,10 @@ struct by_value
     {
         return x;
     }
+    static int size(void)
+    {
+        return sizeof(T);
+    }
 };
 
 template <class T>
@@ -61,7 +65,17 @@ BOOST_PYTHON_MODULE(builtin_converters_ext)
 {    
     def("get_type", get_type);
     def("return_null_handle", return_null_handle);
-        
+
+// These methods are used solely for getting some C++ type sizes
+    def("bool_size", by_value<bool>::size);
+    def("char_size", by_value<char>::size);
+    def("int_size", by_value<int>::size);
+    def("short_size", by_value<short>::size);
+    def("long_size", by_value<long>::size);
+#ifdef HAVE_LONG_LONG
+    def("long_long_size", by_value<BOOST_PYTHON_LONG_LONG>::size);
+#endif
+
     def("rewrap_value_bool", by_value<bool>::rewrap);
     def("rewrap_value_char", by_value<char>::rewrap);
     def("rewrap_value_signed_char", by_value<signed char>::rewrap);

test/test_builtin_converters.py

@@ -4,12 +4,33 @@
 r"""
 >>> from builtin_converters_ext import *
 
+# Provide values for integer converter tests
+>>> def _signed_values(s):
+...     base = 2 ** (8 * s - 1)
+...     return [[-base, -1, 1, base - 1], [-base - 1, base]]
+>>> def _unsigned_values(s):
+...     base = 2 ** (8 * s)
+...     return [[1, base - 1], [-1L, -1, base]]
+
+# Wrappers to simplify tests
+>>> def should_pass(method, values):
+...     result = map(method, values[0])
+...     if result != values[0]:
+...         print "Got %s but expected %s" % (result, values[0])
+>>> def test_overflow(method, values):
+...     for v in values[1]:
+...         try: method(v)
+...         except OverflowError: pass
+...         else: print "OverflowError expected"
+
 # Synthesize idendity functions in case long long not supported
 >>> if not 'rewrap_value_long_long' in dir():
 ...     def rewrap_value_long_long(x): return long(x)
 ...     def rewrap_value_unsigned_long_long(x): return long(x)
 ...     def rewrap_const_reference_long_long(x): return long(x)
 ...     def rewrap_const_reference_unsigned_long_long(x): return long(x)
+>>> if not 'long_long_size' in dir():
+...     def long_long_size(): return long_size()
 
 >>> try: bool_exists = bool
 ... except: pass
@@ -62,15 +83,37 @@ False
 42L
 
    show that we have range checking. 
- 
->>> try: rewrap_value_unsigned_short(-42)
-... except OverflowError: pass
-... else: print 'expected an OverflowError!'
 
->>> try: rewrap_value_int(sys.maxint * 2)
-... except OverflowError: pass
-... else: print 'expected an OverflowError!'
+>>> should_pass(rewrap_value_signed_char, _signed_values(char_size()))
+>>> should_pass(rewrap_value_short, _signed_values(short_size()))
+>>> should_pass(rewrap_value_int, _signed_values(int_size()))
+>>> should_pass(rewrap_value_long, _signed_values(long_size()))
+>>> should_pass(rewrap_value_long_long, _signed_values(long_long_size()))
 
+>>> should_pass(rewrap_value_unsigned_char, _unsigned_values(char_size()))
+>>> should_pass(rewrap_value_unsigned_short, _unsigned_values(short_size()))
+>>> should_pass(rewrap_value_unsigned_int, _unsigned_values(int_size()))
+>>> should_pass(rewrap_value_unsigned_long, _unsigned_values(long_size()))
+>>> should_pass(rewrap_value_unsigned_long_long,
+...     _unsigned_values(long_long_size()))
+
+>>> test_overflow(rewrap_value_signed_char, _signed_values(char_size()))
+>>> test_overflow(rewrap_value_short, _signed_values(short_size()))
+>>> test_overflow(rewrap_value_int, _signed_values(int_size()))
+>>> test_overflow(rewrap_value_long, _signed_values(long_size()))
+>>> test_overflow(rewrap_value_long_long, _signed_values(long_long_size()))
+
+>>> test_overflow(rewrap_value_unsigned_char, _unsigned_values(char_size()))
+>>> test_overflow(rewrap_value_unsigned_short, _unsigned_values(short_size()))
+>>> test_overflow(rewrap_value_unsigned_int, _unsigned_values(int_size()))
+>>> test_overflow(rewrap_value_unsigned_long, _unsigned_values(long_size()))
+
+# Exceptionally for PyLong_AsUnsignedLongLong(), a negative value raises
+# TypeError on Python versions prior to 2.7
+>>> for v in _unsigned_values(long_long_size())[1]:
+...     try: rewrap_value_unsigned_long_long(v)
+...     except (OverflowError, TypeError): pass
+...     else: print "OverflowError or TypeError expected"
 
 >>> assert abs(rewrap_value_float(4.2) - 4.2) < .000001
 >>> rewrap_value_double(4.2) - 4.2