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Amaury Forgeot d'Arc  committed acf72c1

See how much of the _testcapi module we can support on PyPy

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File lib_pypy/_testcapi.py

+import os, sys
+import tempfile
+
+def compile_shared():
+    """Compile '_testcapi.c' into an extension module, and import it
+    """
+    thisdir = os.path.dirname(__file__)
+    output_dir = tempfile.mkdtemp()
+
+    from distutils.ccompiler import new_compiler
+    compiler = new_compiler()
+    compiler.output_dir = output_dir
+
+    # Compile .c file
+    include_dir = os.path.join(thisdir, '..', 'include')
+    res = compiler.compile([os.path.join(thisdir, '_testcapimodule.c')],
+                           include_dirs=[include_dir])
+    object_filename = res[0]
+
+    # set link options
+    if sys.platform == 'win32':
+        output_filename = '_testcapi.pyd'
+        # XXX libpypy-c.lib is currently not installed automatically
+        library = os.path.join(thisdir, '..', 'include', 'libpypy-c')
+        libraries = [library, 'oleaut32']
+        extra_ldargs = ['/MANIFEST'] # needed for VC10
+    else:
+        output_filename = '_testcapi.so'
+        libraries = []
+        extra_ldargs = []
+
+    # link the dynamic library
+    compiler.link_shared_object(
+        [object_filename],
+        output_filename,
+        libraries=libraries,
+        extra_preargs=extra_ldargs)
+
+    # Now import the newly created library, it will replace our module in sys.modules
+    import imp
+    fp, filename, description = imp.find_module('_testcapi', path=[output_dir])
+    imp.load_module('_testcapi', fp, filename, description)
+
+compile_shared()

File lib_pypy/_testcapimodule.c

+/* Verbatim copy of Modules/_testcapimodule.c from CPython 2.7 */
+/*
+ * C Extension module to test Python interpreter C APIs.
+ *
+ * The 'test_*' functions exported by this module are run as part of the
+ * standard Python regression test, via Lib/test/test_capi.py.
+ */
+
+#include "Python.h"
+#include <float.h>
+#include "structmember.h"
+#include "datetime.h"
+
+#ifdef WITH_THREAD
+#include "pythread.h"
+#endif /* WITH_THREAD */
+static PyObject *TestError;     /* set to exception object in init */
+
+/* Raise TestError with test_name + ": " + msg, and return NULL. */
+
+static PyObject *
+raiseTestError(const char* test_name, const char* msg)
+{
+    char buf[2048];
+
+    if (strlen(test_name) + strlen(msg) > sizeof(buf) - 50)
+        PyErr_SetString(TestError, "internal error msg too large");
+    else {
+        PyOS_snprintf(buf, sizeof(buf), "%s: %s", test_name, msg);
+        PyErr_SetString(TestError, buf);
+    }
+    return NULL;
+}
+
+/* Test #defines from pyconfig.h (particularly the SIZEOF_* defines).
+
+   The ones derived from autoconf on the UNIX-like OSes can be relied
+   upon (in the absence of sloppy cross-compiling), but the Windows
+   platforms have these hardcoded.  Better safe than sorry.
+*/
+static PyObject*
+sizeof_error(const char* fatname, const char* typname,
+    int expected, int got)
+{
+    char buf[1024];
+    PyOS_snprintf(buf, sizeof(buf),
+        "%.200s #define == %d but sizeof(%.200s) == %d",
+        fatname, expected, typname, got);
+    PyErr_SetString(TestError, buf);
+    return (PyObject*)NULL;
+}
+
+static PyObject*
+test_config(PyObject *self)
+{
+#define CHECK_SIZEOF(FATNAME, TYPE) \
+            if (FATNAME != sizeof(TYPE)) \
+                return sizeof_error(#FATNAME, #TYPE, FATNAME, sizeof(TYPE))
+
+    CHECK_SIZEOF(SIZEOF_SHORT, short);
+    CHECK_SIZEOF(SIZEOF_INT, int);
+    CHECK_SIZEOF(SIZEOF_LONG, long);
+    CHECK_SIZEOF(SIZEOF_VOID_P, void*);
+    CHECK_SIZEOF(SIZEOF_TIME_T, time_t);
+#ifdef HAVE_LONG_LONG
+    CHECK_SIZEOF(SIZEOF_LONG_LONG, PY_LONG_LONG);
+#endif
+
+#undef CHECK_SIZEOF
+
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+static PyObject*
+test_list_api(PyObject *self)
+{
+    PyObject* list;
+    int i;
+
+    /* SF bug 132008:  PyList_Reverse segfaults */
+#define NLIST 30
+    list = PyList_New(NLIST);
+    if (list == (PyObject*)NULL)
+        return (PyObject*)NULL;
+    /* list = range(NLIST) */
+    for (i = 0; i < NLIST; ++i) {
+        PyObject* anint = PyInt_FromLong(i);
+        if (anint == (PyObject*)NULL) {
+            Py_DECREF(list);
+            return (PyObject*)NULL;
+        }
+        PyList_SET_ITEM(list, i, anint);
+    }
+    /* list.reverse(), via PyList_Reverse() */
+    i = PyList_Reverse(list);   /* should not blow up! */
+    if (i != 0) {
+        Py_DECREF(list);
+        return (PyObject*)NULL;
+    }
+    /* Check that list == range(29, -1, -1) now */
+    for (i = 0; i < NLIST; ++i) {
+        PyObject* anint = PyList_GET_ITEM(list, i);
+        if (PyInt_AS_LONG(anint) != NLIST-1-i) {
+            PyErr_SetString(TestError,
+                            "test_list_api: reverse screwed up");
+            Py_DECREF(list);
+            return (PyObject*)NULL;
+        }
+    }
+    Py_DECREF(list);
+#undef NLIST
+
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+static int
+test_dict_inner(int count)
+{
+    Py_ssize_t pos = 0, iterations = 0;
+    int i;
+    PyObject *dict = PyDict_New();
+    PyObject *v, *k;
+
+    if (dict == NULL)
+        return -1;
+
+    for (i = 0; i < count; i++) {
+        v = PyInt_FromLong(i);
+        PyDict_SetItem(dict, v, v);
+        Py_DECREF(v);
+    }
+
+    while (PyDict_Next(dict, &pos, &k, &v)) {
+        PyObject *o;
+        iterations++;
+
+        i = PyInt_AS_LONG(v) + 1;
+        o = PyInt_FromLong(i);
+        if (o == NULL)
+            return -1;
+        if (PyDict_SetItem(dict, k, o) < 0) {
+            Py_DECREF(o);
+            return -1;
+        }
+        Py_DECREF(o);
+    }
+
+    Py_DECREF(dict);
+
+    if (iterations != count) {
+        PyErr_SetString(
+            TestError,
+            "test_dict_iteration: dict iteration went wrong ");
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+static PyObject*
+test_dict_iteration(PyObject* self)
+{
+    int i;
+
+    for (i = 0; i < 200; i++) {
+        if (test_dict_inner(i) < 0) {
+            return NULL;
+        }
+    }
+
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+
+/* Issue #4701: Check that PyObject_Hash implicitly calls
+ *   PyType_Ready if it hasn't already been called
+ */
+static PyTypeObject _HashInheritanceTester_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,                          /* Number of items for varobject */
+    "hashinheritancetester",            /* Name of this type */
+    sizeof(PyObject),           /* Basic object size */
+    0,                          /* Item size for varobject */
+    (destructor)PyObject_Del, /* tp_dealloc */
+    0,                          /* tp_print */
+    0,                          /* tp_getattr */
+    0,                          /* tp_setattr */
+    0,                          /* tp_compare */
+    0,                          /* tp_repr */
+    0,                          /* tp_as_number */
+    0,                          /* tp_as_sequence */
+    0,                          /* tp_as_mapping */
+    0,                          /* tp_hash */
+    0,                          /* tp_call */
+    0,                          /* tp_str */
+    PyObject_GenericGetAttr,  /* tp_getattro */
+    0,                          /* tp_setattro */
+    0,                          /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT,         /* tp_flags */
+    0,                          /* tp_doc */
+    0,                          /* tp_traverse */
+    0,                          /* tp_clear */
+    0,                          /* tp_richcompare */
+    0,                          /* tp_weaklistoffset */
+    0,                          /* tp_iter */
+    0,                          /* tp_iternext */
+    0,                          /* tp_methods */
+    0,                          /* tp_members */
+    0,                          /* tp_getset */
+    0,                          /* tp_base */
+    0,                          /* tp_dict */
+    0,                          /* tp_descr_get */
+    0,                          /* tp_descr_set */
+    0,                          /* tp_dictoffset */
+    0,                          /* tp_init */
+    0,                          /* tp_alloc */
+    PyType_GenericNew,                  /* tp_new */
+};
+
+static PyObject*
+test_lazy_hash_inheritance(PyObject* self)
+{
+    PyTypeObject *type;
+    PyObject *obj;
+    long hash;
+
+    type = &_HashInheritanceTester_Type;
+
+    if (type->tp_dict != NULL)
+        /* The type has already been initialized. This probably means
+           -R is being used. */
+        Py_RETURN_NONE;
+
+
+    obj = PyObject_New(PyObject, type);
+    if (obj == NULL) {
+        PyErr_Clear();
+        PyErr_SetString(
+            TestError,
+            "test_lazy_hash_inheritance: failed to create object");
+        return NULL;
+    }
+
+    if (type->tp_dict != NULL) {
+        PyErr_SetString(
+            TestError,
+            "test_lazy_hash_inheritance: type initialised too soon");
+        Py_DECREF(obj);
+        return NULL;
+    }
+
+    hash = PyObject_Hash(obj);
+    if ((hash == -1) && PyErr_Occurred()) {
+        PyErr_Clear();
+        PyErr_SetString(
+            TestError,
+            "test_lazy_hash_inheritance: could not hash object");
+        Py_DECREF(obj);
+        return NULL;
+    }
+
+    if (type->tp_dict == NULL) {
+        PyErr_SetString(
+            TestError,
+            "test_lazy_hash_inheritance: type not initialised by hash()");
+        Py_DECREF(obj);
+        return NULL;
+    }
+
+    if (type->tp_hash != PyType_Type.tp_hash) {
+        PyErr_SetString(
+            TestError,
+            "test_lazy_hash_inheritance: unexpected hash function");
+        Py_DECREF(obj);
+        return NULL;
+    }
+
+    Py_DECREF(obj);
+
+    Py_RETURN_NONE;
+}
+
+
+/* Issue #7385: Check that memoryview() does not crash
+ *   when bf_getbuffer returns an error
+ */
+
+static int
+broken_buffer_getbuffer(PyObject *self, Py_buffer *view, int flags)
+{
+    PyErr_SetString(
+        TestError,
+        "test_broken_memoryview: expected error in bf_getbuffer");
+    return -1;
+}
+
+static PyBufferProcs memoryviewtester_as_buffer = {
+    0,          /* bf_getreadbuffer */
+    0,          /* bf_getwritebuffer */
+    0,          /* bf_getsegcount */
+    0,          /* bf_getcharbuffer */
+    (getbufferproc)broken_buffer_getbuffer,     /* bf_getbuffer */
+    0,          /* bf_releasebuffer */
+};
+
+static PyTypeObject _MemoryViewTester_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,                          /* Number of items for varobject */
+    "memoryviewtester",         /* Name of this type */
+    sizeof(PyObject),           /* Basic object size */
+    0,                          /* Item size for varobject */
+    (destructor)PyObject_Del, /* tp_dealloc */
+    0,                          /* tp_print */
+    0,                          /* tp_getattr */
+    0,                          /* tp_setattr */
+    0,                          /* tp_compare */
+    0,                          /* tp_repr */
+    0,                          /* tp_as_number */
+    0,                          /* tp_as_sequence */
+    0,                          /* tp_as_mapping */
+    0,                          /* tp_hash */
+    0,                          /* tp_call */
+    0,                          /* tp_str */
+    PyObject_GenericGetAttr,  /* tp_getattro */
+    0,                          /* tp_setattro */
+    &memoryviewtester_as_buffer,                        /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER,     /* tp_flags */
+    0,                          /* tp_doc */
+    0,                          /* tp_traverse */
+    0,                          /* tp_clear */
+    0,                          /* tp_richcompare */
+    0,                          /* tp_weaklistoffset */
+    0,                          /* tp_iter */
+    0,                          /* tp_iternext */
+    0,                          /* tp_methods */
+    0,                          /* tp_members */
+    0,                          /* tp_getset */
+    0,                          /* tp_base */
+    0,                          /* tp_dict */
+    0,                          /* tp_descr_get */
+    0,                          /* tp_descr_set */
+    0,                          /* tp_dictoffset */
+    0,                          /* tp_init */
+    0,                          /* tp_alloc */
+    PyType_GenericNew,                  /* tp_new */
+};
+
+static PyObject*
+test_broken_memoryview(PyObject* self)
+{
+    PyObject *obj = PyObject_New(PyObject, &_MemoryViewTester_Type);
+    PyObject *res;
+
+    if (obj == NULL) {
+        PyErr_Clear();
+        PyErr_SetString(
+            TestError,
+            "test_broken_memoryview: failed to create object");
+        return NULL;
+    }
+
+    res = PyMemoryView_FromObject(obj);
+    if (res || !PyErr_Occurred()){
+        PyErr_SetString(
+            TestError,
+            "test_broken_memoryview: memoryview() didn't raise an Exception");
+        Py_XDECREF(res);
+        Py_DECREF(obj);
+        return NULL;
+    }
+
+    PyErr_Clear();
+    Py_DECREF(obj);
+    Py_RETURN_NONE;
+}
+
+
+/* Tests of PyLong_{As, From}{Unsigned,}Long(), and (#ifdef HAVE_LONG_LONG)
+   PyLong_{As, From}{Unsigned,}LongLong().
+
+   Note that the meat of the test is contained in testcapi_long.h.
+   This is revolting, but delicate code duplication is worse:  "almost
+   exactly the same" code is needed to test PY_LONG_LONG, but the ubiquitous
+   dependence on type names makes it impossible to use a parameterized
+   function.  A giant macro would be even worse than this.  A C++ template
+   would be perfect.
+
+   The "report an error" functions are deliberately not part of the #include
+   file:  if the test fails, you can set a breakpoint in the appropriate
+   error function directly, and crawl back from there in the debugger.
+*/
+
+#define UNBIND(X)  Py_DECREF(X); (X) = NULL
+
+static PyObject *
+raise_test_long_error(const char* msg)
+{
+    return raiseTestError("test_long_api", msg);
+}
+
+#define TESTNAME        test_long_api_inner
+#define TYPENAME        long
+#define F_S_TO_PY       PyLong_FromLong
+#define F_PY_TO_S       PyLong_AsLong
+#define F_U_TO_PY       PyLong_FromUnsignedLong
+#define F_PY_TO_U       PyLong_AsUnsignedLong
+
+#include "testcapi_long.h"
+
+static PyObject *
+test_long_api(PyObject* self)
+{
+    return TESTNAME(raise_test_long_error);
+}
+
+#undef TESTNAME
+#undef TYPENAME
+#undef F_S_TO_PY
+#undef F_PY_TO_S
+#undef F_U_TO_PY
+#undef F_PY_TO_U
+
+#ifdef HAVE_LONG_LONG
+
+static PyObject *
+raise_test_longlong_error(const char* msg)
+{
+    return raiseTestError("test_longlong_api", msg);
+}
+
+#define TESTNAME        test_longlong_api_inner
+#define TYPENAME        PY_LONG_LONG
+#define F_S_TO_PY       PyLong_FromLongLong
+#define F_PY_TO_S       PyLong_AsLongLong
+#define F_U_TO_PY       PyLong_FromUnsignedLongLong
+#define F_PY_TO_U       PyLong_AsUnsignedLongLong
+
+#include "testcapi_long.h"
+
+static PyObject *
+test_longlong_api(PyObject* self, PyObject *args)
+{
+    return TESTNAME(raise_test_longlong_error);
+}
+
+#undef TESTNAME
+#undef TYPENAME
+#undef F_S_TO_PY
+#undef F_PY_TO_S
+#undef F_U_TO_PY
+#undef F_PY_TO_U
+
+/* Test the PyLong_AsLongAndOverflow API. General conversion to PY_LONG
+   is tested by test_long_api_inner. This test will concentrate on proper
+   handling of overflow.
+*/
+
+static PyObject *
+test_long_and_overflow(PyObject *self)
+{
+    PyObject *num, *one, *temp;
+    long value;
+    int overflow;
+
+    /* Test that overflow is set properly for a large value. */
+    /* num is a number larger than LONG_MAX even on 64-bit platforms */
+    num = PyLong_FromString("FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != 1)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not set to 1");
+
+    /* Same again, with num = LONG_MAX + 1 */
+    num = PyLong_FromLong(LONG_MAX);
+    if (num == NULL)
+        return NULL;
+    one = PyLong_FromLong(1L);
+    if (one == NULL) {
+        Py_DECREF(num);
+        return NULL;
+    }
+    temp = PyNumber_Add(num, one);
+    Py_DECREF(one);
+    Py_DECREF(num);
+    num = temp;
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != 1)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not set to 1");
+
+    /* Test that overflow is set properly for a large negative value. */
+    /* num is a number smaller than LONG_MIN even on 64-bit platforms */
+    num = PyLong_FromString("-FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != -1)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not set to -1");
+
+    /* Same again, with num = LONG_MIN - 1 */
+    num = PyLong_FromLong(LONG_MIN);
+    if (num == NULL)
+        return NULL;
+    one = PyLong_FromLong(1L);
+    if (one == NULL) {
+        Py_DECREF(num);
+        return NULL;
+    }
+    temp = PyNumber_Subtract(num, one);
+    Py_DECREF(one);
+    Py_DECREF(num);
+    num = temp;
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != -1)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not set to -1");
+
+    /* Test that overflow is cleared properly for small values. */
+    num = PyLong_FromString("FF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != 0xFF)
+        return raiseTestError("test_long_and_overflow",
+            "expected return value 0xFF");
+    if (overflow != 0)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not cleared");
+
+    num = PyLong_FromString("-FF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -0xFF)
+        return raiseTestError("test_long_and_overflow",
+            "expected return value 0xFF");
+    if (overflow != 0)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was set incorrectly");
+
+    num = PyLong_FromLong(LONG_MAX);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != LONG_MAX)
+        return raiseTestError("test_long_and_overflow",
+            "expected return value LONG_MAX");
+    if (overflow != 0)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not cleared");
+
+    num = PyLong_FromLong(LONG_MIN);
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != LONG_MIN)
+        return raiseTestError("test_long_and_overflow",
+            "expected return value LONG_MIN");
+    if (overflow != 0)
+        return raiseTestError("test_long_and_overflow",
+            "overflow was not cleared");
+
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+/* Test the PyLong_AsLongLongAndOverflow API. General conversion to
+   PY_LONG_LONG is tested by test_long_api_inner. This test will
+   concentrate on proper handling of overflow.
+*/
+
+static PyObject *
+test_long_long_and_overflow(PyObject *self)
+{
+    PyObject *num, *one, *temp;
+    PY_LONG_LONG value;
+    int overflow;
+
+    /* Test that overflow is set properly for a large value. */
+    /* num is a number larger than PY_LLONG_MAX on a typical machine. */
+    num = PyLong_FromString("FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != 1)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not set to 1");
+
+    /* Same again, with num = PY_LLONG_MAX + 1 */
+    num = PyLong_FromLongLong(PY_LLONG_MAX);
+    if (num == NULL)
+        return NULL;
+    one = PyLong_FromLong(1L);
+    if (one == NULL) {
+        Py_DECREF(num);
+        return NULL;
+    }
+    temp = PyNumber_Add(num, one);
+    Py_DECREF(one);
+    Py_DECREF(num);
+    num = temp;
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != 1)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not set to 1");
+
+    /* Test that overflow is set properly for a large negative value. */
+    /* num is a number smaller than PY_LLONG_MIN on a typical platform */
+    num = PyLong_FromString("-FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not set to -1");
+
+    /* Same again, with num = PY_LLONG_MIN - 1 */
+    num = PyLong_FromLongLong(PY_LLONG_MIN);
+    if (num == NULL)
+        return NULL;
+    one = PyLong_FromLong(1L);
+    if (one == NULL) {
+        Py_DECREF(num);
+        return NULL;
+    }
+    temp = PyNumber_Subtract(num, one);
+    Py_DECREF(one);
+    Py_DECREF(num);
+    num = temp;
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "return value was not set to -1");
+    if (overflow != -1)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not set to -1");
+
+    /* Test that overflow is cleared properly for small values. */
+    num = PyLong_FromString("FF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != 0xFF)
+        return raiseTestError("test_long_long_and_overflow",
+            "expected return value 0xFF");
+    if (overflow != 0)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not cleared");
+
+    num = PyLong_FromString("-FF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != -0xFF)
+        return raiseTestError("test_long_long_and_overflow",
+            "expected return value 0xFF");
+    if (overflow != 0)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was set incorrectly");
+
+    num = PyLong_FromLongLong(PY_LLONG_MAX);
+    if (num == NULL)
+        return NULL;
+    overflow = 1234;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != PY_LLONG_MAX)
+        return raiseTestError("test_long_long_and_overflow",
+            "expected return value PY_LLONG_MAX");
+    if (overflow != 0)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not cleared");
+
+    num = PyLong_FromLongLong(PY_LLONG_MIN);
+    if (num == NULL)
+        return NULL;
+    overflow = 0;
+    value = PyLong_AsLongLongAndOverflow(num, &overflow);
+    Py_DECREF(num);
+    if (value == -1 && PyErr_Occurred())
+        return NULL;
+    if (value != PY_LLONG_MIN)
+        return raiseTestError("test_long_long_and_overflow",
+            "expected return value PY_LLONG_MIN");
+    if (overflow != 0)
+        return raiseTestError("test_long_long_and_overflow",
+            "overflow was not cleared");
+
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+/* Test the L code for PyArg_ParseTuple.  This should deliver a PY_LONG_LONG
+   for both long and int arguments.  The test may leak a little memory if
+   it fails.
+*/
+static PyObject *
+test_L_code(PyObject *self)
+{
+    PyObject *tuple, *num;
+    PY_LONG_LONG value;
+
+    tuple = PyTuple_New(1);
+    if (tuple == NULL)
+        return NULL;
+
+    num = PyLong_FromLong(42);
+    if (num == NULL)
+        return NULL;
+
+    PyTuple_SET_ITEM(tuple, 0, num);
+
+    value = -1;
+    if (PyArg_ParseTuple(tuple, "L:test_L_code", &value) < 0)
+        return NULL;
+    if (value != 42)
+        return raiseTestError("test_L_code",
+            "L code returned wrong value for long 42");
+
+    Py_DECREF(num);
+    num = PyInt_FromLong(42);
+    if (num == NULL)
+        return NULL;
+
+    PyTuple_SET_ITEM(tuple, 0, num);
+
+    value = -1;
+    if (PyArg_ParseTuple(tuple, "L:test_L_code", &value) < 0)
+        return NULL;
+    if (value != 42)
+        return raiseTestError("test_L_code",
+            "L code returned wrong value for int 42");
+
+    Py_DECREF(tuple);
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+#endif  /* ifdef HAVE_LONG_LONG */
+
+/* Test tuple argument processing */
+static PyObject *
+getargs_tuple(PyObject *self, PyObject *args)
+{
+    int a, b, c;
+    if (!PyArg_ParseTuple(args, "i(ii)", &a, &b, &c))
+        return NULL;
+    return Py_BuildValue("iii", a, b, c);
+}
+
+/* test PyArg_ParseTupleAndKeywords */
+static PyObject *getargs_keywords(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    static char *keywords[] = {"arg1","arg2","arg3","arg4","arg5", NULL};
+    static char *fmt="(ii)i|(i(ii))(iii)i";
+    int int_args[10]={-1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, fmt, keywords,
+        &int_args[0], &int_args[1], &int_args[2], &int_args[3], &int_args[4],
+        &int_args[5], &int_args[6], &int_args[7], &int_args[8], &int_args[9]))
+        return NULL;
+    return Py_BuildValue("iiiiiiiiii",
+        int_args[0], int_args[1], int_args[2], int_args[3], int_args[4],
+        int_args[5], int_args[6], int_args[7], int_args[8], int_args[9]);
+}
+
+/* Functions to call PyArg_ParseTuple with integer format codes,
+   and return the result.
+*/
+static PyObject *
+getargs_b(PyObject *self, PyObject *args)
+{
+    unsigned char value;
+    if (!PyArg_ParseTuple(args, "b", &value))
+        return NULL;
+    return PyLong_FromUnsignedLong((unsigned long)value);
+}
+
+static PyObject *
+getargs_B(PyObject *self, PyObject *args)
+{
+    unsigned char value;
+    if (!PyArg_ParseTuple(args, "B", &value))
+        return NULL;
+    return PyLong_FromUnsignedLong((unsigned long)value);
+}
+
+static PyObject *
+getargs_h(PyObject *self, PyObject *args)
+{
+    short value;
+    if (!PyArg_ParseTuple(args, "h", &value))
+        return NULL;
+    return PyLong_FromLong((long)value);
+}
+
+static PyObject *
+getargs_H(PyObject *self, PyObject *args)
+{
+    unsigned short value;
+    if (!PyArg_ParseTuple(args, "H", &value))
+        return NULL;
+    return PyLong_FromUnsignedLong((unsigned long)value);
+}
+
+static PyObject *
+getargs_I(PyObject *self, PyObject *args)
+{
+    unsigned int value;
+    if (!PyArg_ParseTuple(args, "I", &value))
+        return NULL;
+    return PyLong_FromUnsignedLong((unsigned long)value);
+}
+
+static PyObject *
+getargs_k(PyObject *self, PyObject *args)
+{
+    unsigned long value;
+    if (!PyArg_ParseTuple(args, "k", &value))
+        return NULL;
+    return PyLong_FromUnsignedLong(value);
+}
+
+static PyObject *
+getargs_i(PyObject *self, PyObject *args)
+{
+    int value;
+    if (!PyArg_ParseTuple(args, "i", &value))
+        return NULL;
+    return PyLong_FromLong((long)value);
+}
+
+static PyObject *
+getargs_l(PyObject *self, PyObject *args)
+{
+    long value;
+    if (!PyArg_ParseTuple(args, "l", &value))
+        return NULL;
+    return PyLong_FromLong(value);
+}
+
+static PyObject *
+getargs_n(PyObject *self, PyObject *args)
+{
+    Py_ssize_t value;
+    if (!PyArg_ParseTuple(args, "n", &value))
+    return NULL;
+    return PyInt_FromSsize_t(value);
+}
+
+#ifdef HAVE_LONG_LONG
+static PyObject *
+getargs_L(PyObject *self, PyObject *args)
+{
+    PY_LONG_LONG value;
+    if (!PyArg_ParseTuple(args, "L", &value))
+        return NULL;
+    return PyLong_FromLongLong(value);
+}
+
+static PyObject *
+getargs_K(PyObject *self, PyObject *args)
+{
+    unsigned PY_LONG_LONG value;
+    if (!PyArg_ParseTuple(args, "K", &value))
+        return NULL;
+    return PyLong_FromUnsignedLongLong(value);
+}
+#endif
+
+/* This function not only tests the 'k' getargs code, but also the
+   PyInt_AsUnsignedLongMask() and PyInt_AsUnsignedLongMask() functions. */
+static PyObject *
+test_k_code(PyObject *self)
+{
+    PyObject *tuple, *num;
+    unsigned long value;
+
+    tuple = PyTuple_New(1);
+    if (tuple == NULL)
+        return NULL;
+
+    /* a number larger than ULONG_MAX even on 64-bit platforms */
+    num = PyLong_FromString("FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+    if (num == NULL)
+        return NULL;
+
+    value = PyInt_AsUnsignedLongMask(num);
+    if (value != ULONG_MAX)
+        return raiseTestError("test_k_code",
+        "PyInt_AsUnsignedLongMask() returned wrong value for long 0xFFF...FFF");
+
+    PyTuple_SET_ITEM(tuple, 0, num);
+
+    value = 0;
+    if (PyArg_ParseTuple(tuple, "k:test_k_code", &value) < 0)
+        return NULL;
+    if (value != ULONG_MAX)
+        return raiseTestError("test_k_code",
+            "k code returned wrong value for long 0xFFF...FFF");
+
+    Py_DECREF(num);
+    num = PyLong_FromString("-FFFFFFFF000000000000000042", NULL, 16);
+    if (num == NULL)
+        return NULL;
+
+    value = PyInt_AsUnsignedLongMask(num);
+    if (value != (unsigned long)-0x42)
+        return raiseTestError("test_k_code",
+        "PyInt_AsUnsignedLongMask() returned wrong value for long 0xFFF...FFF");
+
+    PyTuple_SET_ITEM(tuple, 0, num);
+
+    value = 0;
+    if (PyArg_ParseTuple(tuple, "k:test_k_code", &value) < 0)
+        return NULL;
+    if (value != (unsigned long)-0x42)
+        return raiseTestError("test_k_code",
+            "k code returned wrong value for long -0xFFF..000042");
+
+    Py_DECREF(tuple);
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+#ifdef Py_USING_UNICODE
+
+static volatile int x;
+
+/* Test the u and u# codes for PyArg_ParseTuple. May leak memory in case
+   of an error.
+*/
+static PyObject *
+test_u_code(PyObject *self)
+{
+    PyObject *tuple, *obj;
+    Py_UNICODE *value;
+    int len;
+
+    /* issue4122: Undefined reference to _Py_ascii_whitespace on Windows */
+    /* Just use the macro and check that it compiles */
+    x = Py_UNICODE_ISSPACE(25);
+
+    tuple = PyTuple_New(1);
+    if (tuple == NULL)
+        return NULL;
+
+    obj = PyUnicode_Decode("test", strlen("test"),
+                           "ascii", NULL);
+    if (obj == NULL)
+        return NULL;
+
+    PyTuple_SET_ITEM(tuple, 0, obj);
+
+    value = 0;
+    if (PyArg_ParseTuple(tuple, "u:test_u_code", &value) < 0)
+        return NULL;
+    if (value != PyUnicode_AS_UNICODE(obj))
+        return raiseTestError("test_u_code",
+            "u code returned wrong value for u'test'");
+    value = 0;
+    if (PyArg_ParseTuple(tuple, "u#:test_u_code", &value, &len) < 0)
+        return NULL;
+    if (value != PyUnicode_AS_UNICODE(obj) ||
+        len != PyUnicode_GET_SIZE(obj))
+        return raiseTestError("test_u_code",
+            "u# code returned wrong values for u'test'");
+
+    Py_DECREF(tuple);
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+static PyObject *
+test_widechar(PyObject *self)
+{
+#if defined(SIZEOF_WCHAR_T) && (SIZEOF_WCHAR_T == 4)
+    const wchar_t wtext[2] = {(wchar_t)0x10ABCDu};
+    size_t wtextlen = 1;
+#else
+    const wchar_t wtext[3] = {(wchar_t)0xDBEAu, (wchar_t)0xDFCDu};
+    size_t wtextlen = 2;
+#endif
+    PyObject *wide, *utf8;
+
+    wide = PyUnicode_FromWideChar(wtext, wtextlen);
+    if (wide == NULL)
+        return NULL;
+
+    utf8 = PyUnicode_FromString("\xf4\x8a\xaf\x8d");
+    if (utf8 == NULL) {
+        Py_DECREF(wide);
+        return NULL;
+    }
+
+    if (PyUnicode_GET_SIZE(wide) != PyUnicode_GET_SIZE(utf8)) {
+        Py_DECREF(wide);
+        Py_DECREF(utf8);
+        return raiseTestError("test_widechar",
+                        "wide string and utf8 string have different length");
+    }
+    if (PyUnicode_Compare(wide, utf8)) {
+        Py_DECREF(wide);
+        Py_DECREF(utf8);
+        if (PyErr_Occurred())
+            return NULL;
+        return raiseTestError("test_widechar",
+                        "wide string and utf8 string are differents");
+    }
+
+    Py_DECREF(wide);
+    Py_DECREF(utf8);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+test_empty_argparse(PyObject *self)
+{
+    /* Test that formats can begin with '|'. See issue #4720. */
+    PyObject *tuple, *dict = NULL;
+    static char *kwlist[] = {NULL};
+    int result;
+    tuple = PyTuple_New(0);
+    if (!tuple)
+        return NULL;
+    if ((result = PyArg_ParseTuple(tuple, "|:test_empty_argparse")) < 0)
+        goto done;
+    dict = PyDict_New();
+    if (!dict)
+        goto done;
+    result = PyArg_ParseTupleAndKeywords(tuple, dict, "|:test_empty_argparse", kwlist);
+  done:
+    Py_DECREF(tuple);
+    Py_XDECREF(dict);
+    if (result < 0)
+        return NULL;
+    else {
+        Py_RETURN_NONE;
+    }
+}
+
+static PyObject *
+codec_incrementalencoder(PyObject *self, PyObject *args)
+{
+    const char *encoding, *errors = NULL;
+    if (!PyArg_ParseTuple(args, "s|s:test_incrementalencoder",
+                          &encoding, &errors))
+        return NULL;
+    return PyCodec_IncrementalEncoder(encoding, errors);
+}
+
+static PyObject *
+codec_incrementaldecoder(PyObject *self, PyObject *args)
+{
+    const char *encoding, *errors = NULL;
+    if (!PyArg_ParseTuple(args, "s|s:test_incrementaldecoder",
+                          &encoding, &errors))
+        return NULL;
+    return PyCodec_IncrementalDecoder(encoding, errors);
+}
+
+#endif
+
+/* Simple test of _PyLong_NumBits and _PyLong_Sign. */
+static PyObject *
+test_long_numbits(PyObject *self)
+{
+    struct triple {
+        long input;
+        size_t nbits;
+        int sign;
+    } testcases[] = {{0, 0, 0},
+                     {1L, 1, 1},
+                     {-1L, 1, -1},
+                     {2L, 2, 1},
+                     {-2L, 2, -1},
+                     {3L, 2, 1},
+                     {-3L, 2, -1},
+                     {4L, 3, 1},
+                     {-4L, 3, -1},
+                     {0x7fffL, 15, 1},          /* one Python long digit */
+             {-0x7fffL, 15, -1},
+             {0xffffL, 16, 1},
+             {-0xffffL, 16, -1},
+             {0xfffffffL, 28, 1},
+             {-0xfffffffL, 28, -1}};
+    int i;
+
+    for (i = 0; i < sizeof(testcases) / sizeof(struct triple); ++i) {
+        PyObject *plong = PyLong_FromLong(testcases[i].input);
+        size_t nbits = _PyLong_NumBits(plong);
+        int sign = _PyLong_Sign(plong);
+
+        Py_DECREF(plong);
+        if (nbits != testcases[i].nbits)
+            return raiseTestError("test_long_numbits",
+                            "wrong result for _PyLong_NumBits");
+        if (sign != testcases[i].sign)
+            return raiseTestError("test_long_numbits",
+                            "wrong result for _PyLong_Sign");
+    }
+    Py_INCREF(Py_None);
+    return Py_None;
+}
+
+/* Example passing NULLs to PyObject_Str(NULL) and PyObject_Unicode(NULL). */
+
+static PyObject *
+test_null_strings(PyObject *self)
+{
+    PyObject *o1 = PyObject_Str(NULL), *o2 = PyObject_Unicode(NULL);
+    PyObject *tuple = PyTuple_Pack(2, o1, o2);
+    Py_XDECREF(o1);
+    Py_XDECREF(o2);
+    return tuple;
+}
+
+static PyObject *
+raise_exception(PyObject *self, PyObject *args)
+{
+    PyObject *exc;
+    PyObject *exc_args, *v;
+    int num_args, i;
+
+    if (!PyArg_ParseTuple(args, "Oi:raise_exception",
+                          &exc, &num_args))
+        return NULL;
+    if (!PyExceptionClass_Check(exc)) {
+        PyErr_Format(PyExc_TypeError, "an exception class is required");
+        return NULL;
+    }
+
+    exc_args = PyTuple_New(num_args);
+    if (exc_args == NULL)
+        return NULL;
+    for (i = 0; i < num_args; ++i) {
+        v = PyInt_FromLong(i);
+        if (v == NULL) {
+            Py_DECREF(exc_args);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(exc_args, i, v);
+    }
+    PyErr_SetObject(exc, exc_args);
+    Py_DECREF(exc_args);
+    return NULL;
+}
+
+
+static int test_run_counter = 0;
+
+static PyObject *
+test_datetime_capi(PyObject *self, PyObject *args) {
+    if (PyDateTimeAPI) {
+        if (test_run_counter) {
+            /* Probably regrtest.py -R */
+            Py_RETURN_NONE;
+        }
+        else {
+            PyErr_SetString(PyExc_AssertionError,
+                            "PyDateTime_CAPI somehow initialized");
+            return NULL;
+        }
+    }
+    test_run_counter++;
+    PyDateTime_IMPORT;
+    if (PyDateTimeAPI)
+        Py_RETURN_NONE;
+    else
+        return NULL;
+}
+
+
+#ifdef WITH_THREAD
+
+/* test_thread_state spawns a thread of its own, and that thread releases
+ * `thread_done` when it's finished.  The driver code has to know when the
+ * thread finishes, because the thread uses a PyObject (the callable) that
+ * may go away when the driver finishes.  The former lack of this explicit
+ * synchronization caused rare segfaults, so rare that they were seen only
+ * on a Mac buildbot (although they were possible on any box).
+ */
+static PyThread_type_lock thread_done = NULL;
+
+static int
+_make_call(void *callable)
+{
+    PyObject *rc;
+    int success;
+    PyGILState_STATE s = PyGILState_Ensure();
+    rc = PyObject_CallFunction((PyObject *)callable, "");
+    success = (rc != NULL);
+    Py_XDECREF(rc);
+    PyGILState_Release(s);
+    return success;
+}
+
+/* Same thing, but releases `thread_done` when it returns.  This variant
+ * should be called only from threads spawned by test_thread_state().
+ */
+static void
+_make_call_from_thread(void *callable)
+{
+    _make_call(callable);
+    PyThread_release_lock(thread_done);
+}
+
+static PyObject *
+test_thread_state(PyObject *self, PyObject *args)
+{
+    PyObject *fn;
+    int success = 1;
+
+    if (!PyArg_ParseTuple(args, "O:test_thread_state", &fn))
+        return NULL;
+
+    if (!PyCallable_Check(fn)) {
+        PyErr_Format(PyExc_TypeError, "'%s' object is not callable",
+            fn->ob_type->tp_name);
+        return NULL;
+    }
+
+    /* Ensure Python is set up for threading */
+    PyEval_InitThreads();
+    thread_done = PyThread_allocate_lock();
+    if (thread_done == NULL)
+        return PyErr_NoMemory();
+    PyThread_acquire_lock(thread_done, 1);
+
+    /* Start a new thread with our callback. */
+    PyThread_start_new_thread(_make_call_from_thread, fn);
+    /* Make the callback with the thread lock held by this thread */
+    success &= _make_call(fn);
+    /* Do it all again, but this time with the thread-lock released */
+    Py_BEGIN_ALLOW_THREADS
+    success &= _make_call(fn);
+    PyThread_acquire_lock(thread_done, 1);  /* wait for thread to finish */
+    Py_END_ALLOW_THREADS
+
+    /* And once more with and without a thread
+       XXX - should use a lock and work out exactly what we are trying
+       to test <wink>
+    */
+    Py_BEGIN_ALLOW_THREADS
+    PyThread_start_new_thread(_make_call_from_thread, fn);
+    success &= _make_call(fn);
+    PyThread_acquire_lock(thread_done, 1);  /* wait for thread to finish */
+    Py_END_ALLOW_THREADS
+
+    /* Release lock we acquired above.  This is required on HP-UX. */
+    PyThread_release_lock(thread_done);
+
+    PyThread_free_lock(thread_done);
+    if (!success)
+        return NULL;
+    Py_RETURN_NONE;
+}
+
+/* test Py_AddPendingCalls using threads */
+static int _pending_callback(void *arg)
+{
+    /* we assume the argument is callable object to which we own a reference */
+    PyObject *callable = (PyObject *)arg;
+    PyObject *r = PyObject_CallObject(callable, NULL);
+    Py_DECREF(callable);
+    Py_XDECREF(r);
+    return r != NULL ? 0 : -1;
+}
+
+/* The following requests n callbacks to _pending_callback.  It can be
+ * run from any python thread.
+ */
+PyObject *pending_threadfunc(PyObject *self, PyObject *arg)
+{
+    PyObject *callable;
+    int r;
+    if (PyArg_ParseTuple(arg, "O", &callable) == 0)
+        return NULL;
+
+    /* create the reference for the callbackwhile we hold the lock */
+    Py_INCREF(callable);
+
+    Py_BEGIN_ALLOW_THREADS
+    r = Py_AddPendingCall(&_pending_callback, callable);
+    Py_END_ALLOW_THREADS
+
+    if (r<0) {
+        Py_DECREF(callable); /* unsuccessful add, destroy the extra reference */
+        Py_INCREF(Py_False);
+        return Py_False;
+    }
+    Py_INCREF(Py_True);
+    return Py_True;
+}
+#endif
+
+/* Some tests of PyString_FromFormat().  This needs more tests. */
+static PyObject *
+test_string_from_format(PyObject *self, PyObject *args)
+{
+    PyObject *result;
+    char *msg;
+
+#define CHECK_1_FORMAT(FORMAT, TYPE)                    \
+    result = PyString_FromFormat(FORMAT, (TYPE)1);      \
+    if (result == NULL)                                 \
+        return NULL;                                    \
+    if (strcmp(PyString_AsString(result), "1")) {       \
+        msg = FORMAT " failed at 1";                    \
+        goto Fail;                                      \
+    }                                                   \
+    Py_DECREF(result)
+
+    CHECK_1_FORMAT("%d", int);
+    CHECK_1_FORMAT("%ld", long);
+    /* The z width modifier was added in Python 2.5. */
+    CHECK_1_FORMAT("%zd", Py_ssize_t);
+
+    /* The u type code was added in Python 2.5. */
+    CHECK_1_FORMAT("%u", unsigned int);
+    CHECK_1_FORMAT("%lu", unsigned long);
+    CHECK_1_FORMAT("%zu", size_t);
+
+    /* "%lld" and "%llu" support added in Python 2.7. */
+#ifdef HAVE_LONG_LONG
+    CHECK_1_FORMAT("%llu", unsigned PY_LONG_LONG);
+    CHECK_1_FORMAT("%lld", PY_LONG_LONG);
+#endif
+
+    Py_RETURN_NONE;
+
+ Fail:
+    Py_XDECREF(result);
+    return raiseTestError("test_string_from_format", msg);
+
+#undef CHECK_1_FORMAT
+}
+
+/* Coverage testing of capsule objects. */
+
+static const char *capsule_name = "capsule name";
+static       char *capsule_pointer = "capsule pointer";
+static       char *capsule_context = "capsule context";
+static const char *capsule_error = NULL;
+static int
+capsule_destructor_call_count = 0;
+
+static void
+capsule_destructor(PyObject *o) {
+    capsule_destructor_call_count++;
+    if (PyCapsule_GetContext(o) != capsule_context) {
+        capsule_error = "context did not match in destructor!";
+    } else if (PyCapsule_GetDestructor(o) != capsule_destructor) {
+        capsule_error = "destructor did not match in destructor!  (woah!)";
+    } else if (PyCapsule_GetName(o) != capsule_name) {
+        capsule_error = "name did not match in destructor!";
+    } else if (PyCapsule_GetPointer(o, capsule_name) != capsule_pointer) {
+        capsule_error = "pointer did not match in destructor!";
+    }
+}
+
+typedef struct {
+    char *name;
+    char *module;
+    char *attribute;
+} known_capsule;
+
+static PyObject *
+test_capsule(PyObject *self, PyObject *args)
+{
+    PyObject *object;
+    const char *error = NULL;
+    void *pointer;
+    void *pointer2;
+    known_capsule known_capsules[] = {
+        #define KNOWN_CAPSULE(module, name)             { module "." name, module, name }
+        KNOWN_CAPSULE("_socket", "CAPI"),
+        KNOWN_CAPSULE("_curses", "_C_API"),
+        KNOWN_CAPSULE("datetime", "datetime_CAPI"),
+        { NULL, NULL },
+    };
+    known_capsule *known = &known_capsules[0];
+
+#define FAIL(x) { error = (x); goto exit; }
+
+#define CHECK_DESTRUCTOR \
+    if (capsule_error) { \
+        FAIL(capsule_error); \
+    } \
+    else if (!capsule_destructor_call_count) {          \
+        FAIL("destructor not called!"); \
+    } \
+    capsule_destructor_call_count = 0; \
+
+    object = PyCapsule_New(capsule_pointer, capsule_name, capsule_destructor);
+    PyCapsule_SetContext(object, capsule_context);
+    capsule_destructor(object);
+    CHECK_DESTRUCTOR;
+    Py_DECREF(object);
+    CHECK_DESTRUCTOR;
+
+    object = PyCapsule_New(known, "ignored", NULL);
+    PyCapsule_SetPointer(object, capsule_pointer);
+    PyCapsule_SetName(object, capsule_name);
+    PyCapsule_SetDestructor(object, capsule_destructor);
+    PyCapsule_SetContext(object, capsule_context);
+    capsule_destructor(object);
+    CHECK_DESTRUCTOR;
+    /* intentionally access using the wrong name */
+    pointer2 = PyCapsule_GetPointer(object, "the wrong name");
+    if (!PyErr_Occurred()) {
+        FAIL("PyCapsule_GetPointer should have failed but did not!");
+    }
+    PyErr_Clear();
+    if (pointer2) {
+        if (pointer2 == capsule_pointer) {
+            FAIL("PyCapsule_GetPointer should not have"
+                     " returned the internal pointer!");
+        } else {
+            FAIL("PyCapsule_GetPointer should have "
+                     "returned NULL pointer but did not!");
+        }
+    }
+    PyCapsule_SetDestructor(object, NULL);
+    Py_DECREF(object);
+    if (capsule_destructor_call_count) {
+        FAIL("destructor called when it should not have been!");
+    }
+
+    for (known = &known_capsules[0]; known->module != NULL; known++) {
+        /* yeah, ordinarily I wouldn't do this either,
+           but it's fine for this test harness.
+        */
+        static char buffer[256];
+#undef FAIL
+#define FAIL(x) \
+        { \
+        sprintf(buffer, "%s module: \"%s\" attribute: \"%s\"", \
+            x, known->module, known->attribute); \
+        error = buffer; \
+        goto exit; \
+        } \
+
+        PyObject *module = PyImport_ImportModule(known->module);
+        if (module) {
+            pointer = PyCapsule_Import(known->name, 0);
+            if (!pointer) {
+                Py_DECREF(module);
+                FAIL("PyCapsule_GetPointer returned NULL unexpectedly!");
+            }
+            object = PyObject_GetAttrString(module, known->attribute);
+            if (!object) {
+                Py_DECREF(module);
+                return NULL;
+            }
+            pointer2 = PyCapsule_GetPointer(object,
+                                    "weebles wobble but they don't fall down");
+            if (!PyErr_Occurred()) {
+                Py_DECREF(object);
+                Py_DECREF(module);
+                FAIL("PyCapsule_GetPointer should have failed but did not!");
+            }
+            PyErr_Clear();
+            if (pointer2) {
+                Py_DECREF(module);
+                Py_DECREF(object);
+                if (pointer2 == pointer) {
+                    FAIL("PyCapsule_GetPointer should not have"
+                             " returned its internal pointer!");
+                } else {
+                    FAIL("PyCapsule_GetPointer should have"
+                             " returned NULL pointer but did not!");
+                }
+            }
+            Py_DECREF(object);
+            Py_DECREF(module);
+        }
+        else
+            PyErr_Clear();
+    }
+
+  exit:
+    if (error) {
+        return raiseTestError("test_capsule", error);
+    }
+    Py_RETURN_NONE;
+#undef FAIL
+}
+
+/* This is here to provide a docstring for test_descr. */
+static PyObject *
+test_with_docstring(PyObject *self)
+{
+    Py_RETURN_NONE;
+}
+
+/* To test the format of tracebacks as printed out. */
+static PyObject *
+traceback_print(PyObject *self, PyObject *args)
+{
+    PyObject *file;
+    PyObject *traceback;
+    int result;
+
+    if (!PyArg_ParseTuple(args, "OO:traceback_print",
+                            &traceback, &file))
+        return NULL;
+
+    result = PyTraceBack_Print(traceback, file);
+    if (result < 0)
+        return NULL;
+    Py_RETURN_NONE;
+}
+
+/* To test that the result of PyCode_NewEmpty has the right members. */
+static PyObject *
+code_newempty(PyObject *self, PyObject *args)
+{
+    const char *filename;
+    const char *funcname;
+    int firstlineno;
+
+    if (!PyArg_ParseTuple(args, "ssi:code_newempty",
+                          &filename, &funcname, &firstlineno))
+        return NULL;
+
+    return (PyObject *)PyCode_NewEmpty(filename, funcname, firstlineno);
+}
+
+/* Test PyErr_NewExceptionWithDoc (also exercise PyErr_NewException).
+   Run via Lib/test/test_exceptions.py */
+static PyObject *
+make_exception_with_doc(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    char *name;
+    char *doc = NULL;
+    PyObject *base = NULL;
+    PyObject *dict = NULL;
+
+    static char *kwlist[] = {"name", "doc", "base", "dict", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+                    "s|sOO:make_exception_with_doc", kwlist,
+                                     &name, &doc, &base, &dict))
+        return NULL;
+
+    return PyErr_NewExceptionWithDoc(name, doc, base, dict);
+}
+
+static PyMethodDef TestMethods[] = {
+    {"raise_exception",         raise_exception,                 METH_VARARGS},
+    {"test_config",             (PyCFunction)test_config,        METH_NOARGS},
+    {"test_datetime_capi",  test_datetime_capi,              METH_NOARGS},
+    {"test_list_api",           (PyCFunction)test_list_api,      METH_NOARGS},
+    {"test_dict_iteration",     (PyCFunction)test_dict_iteration,METH_NOARGS},
+    {"test_lazy_hash_inheritance",      (PyCFunction)test_lazy_hash_inheritance,METH_NOARGS},
+    {"test_broken_memoryview",          (PyCFunction)test_broken_memoryview,METH_NOARGS},
+    {"test_long_api",           (PyCFunction)test_long_api,      METH_NOARGS},
+    {"test_long_and_overflow", (PyCFunction)test_long_and_overflow,
+     METH_NOARGS},
+    {"test_long_numbits",       (PyCFunction)test_long_numbits,  METH_NOARGS},
+    {"test_k_code",             (PyCFunction)test_k_code,        METH_NOARGS},
+    {"test_empty_argparse", (PyCFunction)test_empty_argparse,METH_NOARGS},
+    {"test_null_strings",       (PyCFunction)test_null_strings,  METH_NOARGS},
+    {"test_string_from_format", (PyCFunction)test_string_from_format, METH_NOARGS},
+    {"test_with_docstring", (PyCFunction)test_with_docstring, METH_NOARGS,
+     PyDoc_STR("This is a pretty normal docstring.")},
+
+    {"getargs_tuple",           getargs_tuple,                   METH_VARARGS},
+    {"getargs_keywords", (PyCFunction)getargs_keywords,
+      METH_VARARGS|METH_KEYWORDS},
+    {"getargs_b",               getargs_b,                       METH_VARARGS},
+    {"getargs_B",               getargs_B,                       METH_VARARGS},
+    {"getargs_h",               getargs_h,                       METH_VARARGS},
+    {"getargs_H",               getargs_H,                       METH_VARARGS},
+    {"getargs_I",               getargs_I,                       METH_VARARGS},
+    {"getargs_k",               getargs_k,                       METH_VARARGS},
+    {"getargs_i",               getargs_i,                       METH_VARARGS},
+    {"getargs_l",               getargs_l,                       METH_VARARGS},
+    {"getargs_n",               getargs_n,                       METH_VARARGS},
+#ifdef HAVE_LONG_LONG
+    {"getargs_L",               getargs_L,                       METH_VARARGS},
+    {"getargs_K",               getargs_K,                       METH_VARARGS},
+    {"test_longlong_api",       test_longlong_api,               METH_NOARGS},
+    {"test_long_long_and_overflow",
+        (PyCFunction)test_long_long_and_overflow, METH_NOARGS},
+    {"test_L_code",             (PyCFunction)test_L_code,        METH_NOARGS},
+    {"codec_incrementalencoder",
+     (PyCFunction)codec_incrementalencoder,      METH_VARARGS},
+    {"codec_incrementaldecoder",
+     (PyCFunction)codec_incrementaldecoder,      METH_VARARGS},
+#endif
+#ifdef Py_USING_UNICODE
+    {"test_u_code",             (PyCFunction)test_u_code,        METH_NOARGS},
+    {"test_widechar",           (PyCFunction)test_widechar,      METH_NOARGS},
+#endif
+#ifdef WITH_THREAD
+    {"_test_thread_state",  test_thread_state,                   METH_VARARGS},
+    {"_pending_threadfunc",     pending_threadfunc,              METH_VARARGS},
+#endif
+    {"test_capsule", (PyCFunction)test_capsule, METH_NOARGS},
+    {"traceback_print", traceback_print,                 METH_VARARGS},
+    {"code_newempty", code_newempty,                     METH_VARARGS},
+    {"make_exception_with_doc", (PyCFunction)make_exception_with_doc,
+     METH_VARARGS | METH_KEYWORDS},
+    {NULL, NULL} /* sentinel */
+};
+
+#define AddSym(d, n, f, v) {PyObject *o = f(v); PyDict_SetItemString(d, n, o); Py_DECREF(o);}
+
+typedef struct {
+    char bool_member;
+    char byte_member;
+    unsigned char ubyte_member;
+    short short_member;
+    unsigned short ushort_member;
+    int int_member;
+    unsigned int uint_member;
+    long long_member;
+    unsigned long ulong_member;
+    float float_member;
+    double double_member;
+    char inplace_member[6];
+#ifdef HAVE_LONG_LONG
+    PY_LONG_LONG longlong_member;
+    unsigned PY_LONG_LONG ulonglong_member;
+#endif
+} all_structmembers;
+
+typedef struct {
+    PyObject_HEAD
+    all_structmembers structmembers;
+} test_structmembers;
+
+static struct PyMemberDef test_members[] = {
+    {"T_BOOL", T_BOOL, offsetof(test_structmembers, structmembers.bool_member), 0, NULL},
+    {"T_BYTE", T_BYTE, offsetof(test_structmembers, structmembers.byte_member), 0, NULL},
+    {"T_UBYTE", T_UBYTE, offsetof(test_structmembers, structmembers.ubyte_member), 0, NULL},
+    {"T_SHORT", T_SHORT, offsetof(test_structmembers, structmembers.short_member), 0, NULL},
+    {"T_USHORT", T_USHORT, offsetof(test_structmembers, structmembers.ushort_member), 0, NULL},
+    {"T_INT", T_INT, offsetof(test_structmembers, structmembers.int_member), 0, NULL},
+    {"T_UINT", T_UINT, offsetof(test_structmembers, structmembers.uint_member), 0, NULL},
+    {"T_LONG", T_LONG, offsetof(test_structmembers, structmembers.long_member), 0, NULL},
+    {"T_ULONG", T_ULONG, offsetof(test_structmembers, structmembers.ulong_member), 0, NULL},
+    {"T_FLOAT", T_FLOAT, offsetof(test_structmembers, structmembers.float_member), 0, NULL},
+    {"T_DOUBLE", T_DOUBLE, offsetof(test_structmembers, structmembers.double_member), 0, NULL},
+    {"T_STRING_INPLACE", T_STRING_INPLACE, offsetof(test_structmembers, structmembers.inplace_member), 0, NULL},
+#ifdef HAVE_LONG_LONG
+    {"T_LONGLONG", T_LONGLONG, offsetof(test_structmembers, structmembers.longlong_member), 0, NULL},
+    {"T_ULONGLONG", T_ULONGLONG, offsetof(test_structmembers, structmembers.ulonglong_member), 0, NULL},
+#endif
+    {NULL}
+};
+
+
+static PyObject *
+test_structmembers_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    static char *keywords[] = {
+        "T_BOOL", "T_BYTE", "T_UBYTE", "T_SHORT", "T_USHORT",
+        "T_INT", "T_UINT", "T_LONG", "T_ULONG",
+        "T_FLOAT", "T_DOUBLE", "T_STRING_INPLACE",
+#ifdef HAVE_LONG_LONG
+        "T_LONGLONG", "T_ULONGLONG",
+#endif
+        NULL};
+    static char *fmt = "|bbBhHiIlkfds#"
+#ifdef HAVE_LONG_LONG
+        "LK"
+#endif
+        ;
+    test_structmembers *ob;
+    const char *s = NULL;
+    Py_ssize_t string_len = 0;
+    ob = PyObject_New(test_structmembers, type);
+    if (ob == NULL)
+        return NULL;
+    memset(&ob->structmembers, 0, sizeof(all_structmembers));
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, fmt, keywords,
+                                     &ob->structmembers.bool_member,
+                                     &ob->structmembers.byte_member,
+                                     &ob->structmembers.ubyte_member,
+                                     &ob->structmembers.short_member,
+                                     &ob->structmembers.ushort_member,
+                                     &ob->structmembers.int_member,
+                                     &ob->structmembers.uint_member,
+                                     &ob->structmembers.long_member,
+                                     &ob->structmembers.ulong_member,
+                                     &ob->structmembers.float_member,
+                                     &ob->structmembers.double_member,
+                                     &s, &string_len
+#ifdef HAVE_LONG_LONG
+                                     , &ob->structmembers.longlong_member,
+                                     &ob->structmembers.ulonglong_member
+#endif
+        )) {
+        Py_DECREF(ob);
+        return NULL;
+    }
+    if (s != NULL) {
+        if (string_len > 5) {
+            Py_DECREF(ob);
+            PyErr_SetString(PyExc_ValueError, "string too long");
+            return NULL;
+        }
+        strcpy(ob->structmembers.inplace_member, s);
+    }
+    else {
+        strcpy(ob->structmembers.inplace_member, "");
+    }
+    return (PyObject *)ob;
+}
+
+static void
+test_structmembers_free(PyObject *ob)
+{
+    PyObject_FREE(ob);
+}
+
+static PyTypeObject test_structmembersType = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "test_structmembersType",
+    sizeof(test_structmembers),         /* tp_basicsize */
+    0,                                  /* tp_itemsize */
+    test_structmembers_free,            /* destructor tp_dealloc */
+    0,                                  /* tp_print */
+    0,                                  /* tp_getattr */
+    0,                                  /* tp_setattr */
+    0,                                  /* tp_compare */
+    0,                                  /* tp_repr */
+    0,                                  /* tp_as_number */
+    0,                                  /* tp_as_sequence */
+    0,                                  /* tp_as_mapping */
+    0,                                  /* tp_hash */
+    0,                                  /* tp_call */
+    0,                                  /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    PyObject_GenericSetAttr,            /* tp_setattro */
+    0,                                  /* tp_as_buffer */
+    0,                                  /* tp_flags */
+    "Type containing all structmember types",
+    0,                                  /* traverseproc tp_traverse */
+    0,                                  /* tp_clear */
+    0,                                  /* tp_richcompare */
+    0,                                  /* tp_weaklistoffset */
+    0,                                  /* tp_iter */
+    0,                                  /* tp_iternext */
+    0,                                  /* tp_methods */
+    test_members,                       /* tp_members */
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+    test_structmembers_new,             /* tp_new */
+};
+
+
+PyMODINIT_FUNC
+init_testcapi(void)
+{
+    PyObject *m;
+
+    m = Py_InitModule("_testcapi", TestMethods);
+    if (m == NULL)
+        return;
+
+    Py_TYPE(&_HashInheritanceTester_Type)=&PyType_Type;
+
+    Py_TYPE(&test_structmembersType)=&PyType_Type;
+    Py_INCREF(&test_structmembersType);
+    /* don't use a name starting with "test", since we don't want
+       test_capi to automatically call this */
+    PyModule_AddObject(m, "_test_structmembersType", (PyObject *)&test_structmembersType);
+
+    PyModule_AddObject(m, "CHAR_MAX", PyInt_FromLong(CHAR_MAX));
+    PyModule_AddObject(m, "CHAR_MIN", PyInt_FromLong(CHAR_MIN));
+    PyModule_AddObject(m, "UCHAR_MAX", PyInt_FromLong(UCHAR_MAX));
+    PyModule_AddObject(m, "SHRT_MAX", PyInt_FromLong(SHRT_MAX));
+    PyModule_AddObject(m, "SHRT_MIN", PyInt_FromLong(SHRT_MIN));
+    PyModule_AddObject(m, "USHRT_MAX", PyInt_FromLong(USHRT_MAX));
+    PyModule_AddObject(m, "INT_MAX",  PyLong_FromLong(INT_MAX));
+    PyModule_AddObject(m, "INT_MIN",  PyLong_FromLong(INT_MIN));
+    PyModule_AddObject(m, "UINT_MAX",  PyLong_FromUnsignedLong(UINT_MAX));
+    PyModule_AddObject(m, "LONG_MAX", PyInt_FromLong(LONG_MAX));
+    PyModule_AddObject(m, "LONG_MIN", PyInt_FromLong(LONG_MIN));
+    PyModule_AddObject(m, "ULONG_MAX", PyLong_FromUnsignedLong(ULONG_MAX));
+    PyModule_AddObject(m, "FLT_MAX", PyFloat_FromDouble(FLT_MAX));
+    PyModule_AddObject(m, "FLT_MIN", PyFloat_FromDouble(FLT_MIN));
+    PyModule_AddObject(m, "DBL_MAX", PyFloat_FromDouble(DBL_MAX));
+    PyModule_AddObject(m, "DBL_MIN", PyFloat_FromDouble(DBL_MIN));
+    PyModule_AddObject(m, "LLONG_MAX", PyLong_FromLongLong(PY_LLONG_MAX));
+    PyModule_AddObject(m, "LLONG_MIN", PyLong_FromLongLong(PY_LLONG_MIN));
+    PyModule_AddObject(m, "ULLONG_MAX", PyLong_FromUnsignedLongLong(PY_ULLONG_MAX));
+    PyModule_AddObject(m, "PY_SSIZE_T_MAX", PyInt_FromSsize_t(PY_SSIZE_T_MAX));
+    PyModule_AddObject(m, "PY_SSIZE_T_MIN", PyInt_FromSsize_t(PY_SSIZE_T_MIN));
+    PyModule_AddObject(m, "SIZEOF_PYGC_HEAD", PyInt_FromSsize_t(sizeof(PyGC_Head)));
+
+    TestError = PyErr_NewException("_testcapi.error", NULL, NULL);
+    Py_INCREF(TestError);
+    PyModule_AddObject(m, "error", TestError);
+}

File lib_pypy/testcapi_long.h

+/* Poor-man's template.  Macros used:
+   TESTNAME     name of the test (like test_long_api_inner)
+   TYPENAME     the signed type (like long)
+   F_S_TO_PY    convert signed to pylong; TYPENAME -> PyObject*
+   F_PY_TO_S    convert pylong to signed; PyObject* -> TYPENAME
+   F_U_TO_PY    convert unsigned to pylong; unsigned TYPENAME -> PyObject*
+   F_PY_TO_U    convert pylong to unsigned; PyObject* -> unsigned TYPENAME
+*/
+
+static PyObject *
+TESTNAME(PyObject *error(const char*))
+{
+    const int NBITS = sizeof(TYPENAME) * 8;
+    unsigned TYPENAME base;
+    PyObject *pyresult;
+    int i;
+
+    /* Note:  This test lets PyObjects leak if an error is raised.  Since
+       an error should never be raised, leaks are impossible <wink>. */
+
+    /* Test native -> PyLong -> native roundtrip identity.
+     * Generate all powers of 2, and test them and their negations,
+     * plus the numbers +-1 off from them.
+     */
+    base = 1;
+    for (i = 0;
+         i < NBITS + 1;  /* on last, base overflows to 0 */
+         ++i, base <<= 1)
+    {
+        int j;
+        for (j = 0; j < 6; ++j) {
+            TYPENAME in, out;
+            unsigned TYPENAME uin, uout;
+
+            /* For 0, 1, 2 use base; for 3, 4, 5 use -base */
+            uin = j < 3 ? base
+                        : (unsigned TYPENAME)(-(TYPENAME)base);
+
+            /* For 0 & 3, subtract 1.
+             * For 1 & 4, leave alone.
+             * For 2 & 5, add 1.
+             */
+            uin += (unsigned TYPENAME)(TYPENAME)(j % 3 - 1);
+
+            pyresult = F_U_TO_PY(uin);
+            if (pyresult == NULL)
+                return error(
+                 "unsigned unexpected null result");
+
+            uout = F_PY_TO_U(pyresult);
+            if (uout == (unsigned TYPENAME)-1 && PyErr_Occurred())
+                return error(
+                    "unsigned unexpected -1 result");
+            if (uout != uin)
+                return error(
+                    "unsigned output != input");
+            UNBIND(pyresult);
+
+            in = (TYPENAME)uin;
+            pyresult = F_S_TO_PY(in);
+            if (pyresult == NULL)
+                return error(
+                    "signed unexpected null result");
+
+            out = F_PY_TO_S(pyresult);
+            if (out == (TYPENAME)-1 && PyErr_Occurred())
+                return error(
+                    "signed unexpected -1 result");
+            if (out != in)
+                return error(
+                    "signed output != input");
+            UNBIND(pyresult);
+        }
+    }
+
+    /* Overflow tests.  The loop above ensured that all limit cases that
+     * should not overflow don't overflow, so all we need to do here is
+     * provoke one-over-the-limit cases (not exhaustive, but sharp).
+     */
+    {
+        PyObject *one, *x, *y;
+        TYPENAME out;
+        unsigned TYPENAME uout;
+
+        one = PyLong_FromLong(1);
+        if (one == NULL)
+            return error(
+                "unexpected NULL from PyLong_FromLong");
+
+        /* Unsigned complains about -1? */
+        x = PyNumber_Negative(one);
+        if (x == NULL)
+            return error(
+                "unexpected NULL from PyNumber_Negative");
+
+        uout = F_PY_TO_U(x);
+        if (uout != (unsigned TYPENAME)-1 || !PyErr_Occurred())
+            return error(
+                "PyLong_AsUnsignedXXX(-1) didn't complain");
+        if (!PyErr_ExceptionMatches(PyExc_OverflowError))
+            return error(
+                "PyLong_AsUnsignedXXX(-1) raised "
+                "something other than OverflowError");
+        PyErr_Clear();
+        UNBIND(x);
+
+        /* Unsigned complains about 2**NBITS? */
+        y = PyLong_FromLong((long)NBITS);
+        if (y == NULL)
+            return error(
+                "unexpected NULL from PyLong_FromLong");
+
+        x = PyNumber_Lshift(one, y); /* 1L << NBITS, == 2**NBITS */
+        UNBIND(y);
+        if (x == NULL)
+            return error(
+                "unexpected NULL from PyNumber_Lshift");
+
+        uout = F_PY_TO_U(x);
+        if (uout != (unsigned TYPENAME)-1 || !PyErr_Occurred())
+            return error(
+                "PyLong_AsUnsignedXXX(2**NBITS) didn't "
+                "complain");
+        if (!PyErr_ExceptionMatches(PyExc_OverflowError))
+            return error(
+                "PyLong_AsUnsignedXXX(2**NBITS) raised "
+                "something other than OverflowError");
+        PyErr_Clear();
+
+        /* Signed complains about 2**(NBITS-1)?
+           x still has 2**NBITS. */
+        y = PyNumber_Rshift(x, one); /* 2**(NBITS-1) */
+        UNBIND(x);
+        if (y == NULL)
+            return error(
+                "unexpected NULL from PyNumber_Rshift");
+
+        out = F_PY_TO_S(y);
+        if (out != (TYPENAME)-1 || !PyErr_Occurred())
+            return error(
+                "PyLong_AsXXX(2**(NBITS-1)) didn't "
+                "complain");
+        if (!PyErr_ExceptionMatches(PyExc_OverflowError))
+            return error(
+                "PyLong_AsXXX(2**(NBITS-1)) raised "
+                "something other than OverflowError");
+        PyErr_Clear();
+
+        /* Signed complains about -2**(NBITS-1)-1?;
+           y still has 2**(NBITS-1). */
+        x = PyNumber_Negative(y);  /* -(2**(NBITS-1)) */
+        UNBIND(y);
+        if (x == NULL)
+            return error(
+                "unexpected NULL from PyNumber_Negative");
+
+        y = PyNumber_Subtract(x, one); /* -(2**(NBITS-1))-1 */
+        UNBIND(x);
+        if (y == NULL)