#include "Python.h"

#include "internal/pystate.h"

#ifndef __STDC__

#ifndef MS_WINDOWS

extern char *strerror(int);

#ifdef MS_WINDOWS

#include <windows.h>

#include <winbase.h>

#include <ctype.h>

#ifdef __cplusplus

extern "C" {

_Py_IDENTIFIER(builtins);

_Py_IDENTIFIER(stderr);

PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback)

{

PyThreadState *tstate = PyThreadState_GET();

PyObject *oldtype, *oldvalue, *oldtraceback;

if (traceback != NULL && !PyTraceBack_Check(traceback)) {

/* XXX Should never happen -- fatal error instead? */

/* Well, it could be None. */

Py_DECREF(traceback);

traceback = NULL;

}

/* Save these in locals to safeguard against recursive

oldtype = tstate->curexc_type;

oldvalue = tstate->curexc_value;

oldtraceback = tstate->curexc_traceback;

tstate->curexc_type = type;

tstate->curexc_value = value;

tstate->curexc_traceback = traceback;

Py_XDECREF(oldtype);

Py_XDECREF(oldvalue);

Py_XDECREF(oldtraceback);

}

_PyErr_StackItem *

_PyErr_GetTopmostException(PyThreadState *tstate)

{

_PyErr_StackItem *exc_info = tstate->exc_info;

while ((exc_info->exc_type == NULL || exc_info->exc_type == Py_None) &&

exc_info->previous_item != NULL)

{

exc_info = exc_info->previous_item;

}

return exc_info;

}

static PyObject*

_PyErr_CreateException(PyObject *exception, PyObject *value)

{

if (value == NULL || value == Py_None) {

return _PyObject_CallNoArg(exception);

}

else if (PyTuple_Check(value)) {

return PyObject_Call(exception, value, NULL);

}

else {

return PyObject_CallFunctionObjArgs(exception, value, NULL);

}

}

PyErr_SetObject(PyObject *exception, PyObject *value)

{

PyThreadState *tstate = PyThreadState_GET();

PyObject *exc_value;

PyObject *tb = NULL;

if (exception != NULL &&

!PyExceptionClass_Check(exception)) {

PyErr_Format(PyExc_SystemError,

"exception %R not a BaseException subclass",

exception);

return;

}

Py_XINCREF(value);

exc_value = _PyErr_GetTopmostException(tstate)->exc_value;

if (exc_value != NULL && exc_value != Py_None) {

/* Implicit exception chaining */

Py_INCREF(exc_value);

if (value == NULL || !PyExceptionInstance_Check(value)) {

/* We must normalize the value right now */

PyObject *fixed_value;

/* Issue #23571: functions must not be called with an

PyErr_Clear();

fixed_value = _PyErr_CreateException(exception, value);

Py_XDECREF(value);

if (fixed_value == NULL) {

return;

}

value = fixed_value;

}

/* Avoid reference cycles through the context chain.

if (exc_value != value) {

PyObject *o = exc_value, *context;

while ((context = PyException_GetContext(o))) {

Py_DECREF(context);

if (context == value) {

PyException_SetContext(o, NULL);

break;

}

o = context;

}

PyException_SetContext(value, exc_value);

}

else {

Py_DECREF(exc_value);

}

}

if (value != NULL && PyExceptionInstance_Check(value))

tb = PyException_GetTraceback(value);

Py_XINCREF(exception);

PyErr_Restore(exception, value, tb);

}

_PyErr_SetKeyError(PyObject *arg)

{

PyObject *tup;

tup = PyTuple_Pack(1, arg);

if (!tup)

return; /* caller will expect error to be set anyway */

PyErr_SetObject(PyExc_KeyError, tup);

Py_DECREF(tup);

}

PyErr_SetNone(PyObject *exception)

{

PyErr_SetObject(exception, (PyObject *)NULL);

}

PyErr_SetString(PyObject *exception, const char *string)

{

PyObject *value = PyUnicode_FromString(string);

PyErr_SetObject(exception, value);

Py_XDECREF(value);

}

PyObject* _Py_HOT_FUNCTION

PyErr_Occurred(void)

{

PyThreadState *tstate = PyThreadState_GET();

return tstate == NULL ? NULL : tstate->curexc_type;

}

PyErr_GivenExceptionMatches(PyObject *err, PyObject *exc)

{

if (err == NULL || exc == NULL) {

/* maybe caused by "import exceptions" that failed early on */

return 0;

}

if (PyTuple_Check(exc)) {

Py_ssize_t i, n;

n = PyTuple_Size(exc);

for (i = 0; i < n; i++) {

/* Test recursively */

if (PyErr_GivenExceptionMatches(

err, PyTuple_GET_ITEM(exc, i)))

{

return 1;

}

}

return 0;

}

/* err might be an instance, so check its class. */

if (PyExceptionInstance_Check(err))

err = PyExceptionInstance_Class(err);

if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) {

return PyType_IsSubtype((PyTypeObject *)err, (PyTypeObject *)exc);

}

return err == exc;

}

PyErr_ExceptionMatches(PyObject *exc)

{

return PyErr_GivenExceptionMatches(PyErr_Occurred(), exc);

}

#ifndef Py_NORMALIZE_RECURSION_LIMIT

#define Py_NORMALIZE_RECURSION_LIMIT 32

PyErr_NormalizeException(PyObject **exc, PyObject **val, PyObject **tb)

{

int recursion_depth = 0;

PyObject *type, *value, *initial_tb;

restart:

type = *exc;

if (type == NULL) {

/* There was no exception, so nothing to do. */

return;

}

value = *val;

/* If PyErr_SetNone() was used, the value will have been actually

if (!value) {

value = Py_None;

Py_INCREF(value);

}

/* Normalize the exception so that if the type is a class, the

if (PyExceptionClass_Check(type)) {

PyObject *inclass = NULL;

int is_subclass = 0;

if (PyExceptionInstance_Check(value)) {

inclass = PyExceptionInstance_Class(value);

is_subclass = PyObject_IsSubclass(inclass, type);

if (is_subclass < 0) {

goto error;

}

}

/* If the value was not an instance, or is not an instance

if (!is_subclass) {

PyObject *fixed_value = _PyErr_CreateException(type, value);

if (fixed_value == NULL) {

goto error;

}

Py_DECREF(value);

value = fixed_value;

}

/* If the class of the instance doesn't exactly match the

else if (inclass != type) {

Py_INCREF(inclass);

Py_DECREF(type);

type = inclass;

}

}

*exc = type;

*val = value;

return;

error:

Py_DECREF(type);

Py_DECREF(value);

recursion_depth++;

if (recursion_depth == Py_NORMALIZE_RECURSION_LIMIT) {

PyErr_SetString(PyExc_RecursionError, "maximum recursion depth "

"exceeded while normalizing an exception");

}

/* If the new exception doesn't set a traceback and the old

initial_tb = *tb;

PyErr_Fetch(exc, val, tb);

assert(*exc != NULL);

if (initial_tb != NULL) {

if (*tb == NULL)

*tb = initial_tb;

else

Py_DECREF(initial_tb);

}

/* Abort when Py_NORMALIZE_RECURSION_LIMIT has been exceeded, and the

if (recursion_depth >= Py_NORMALIZE_RECURSION_LIMIT + 2) {

if (PyErr_GivenExceptionMatches(*exc, PyExc_MemoryError)) {

Py_FatalError("Cannot recover from MemoryErrors "

"while normalizing exceptions.");

}

else {

Py_FatalError("Cannot recover from the recursive normalization "

"of an exception.");

}

}

goto restart;

}

PyErr_Fetch(PyObject **p_type, PyObject **p_value, PyObject **p_traceback)

{

PyThreadState *tstate = PyThreadState_GET();

*p_type = tstate->curexc_type;

*p_value = tstate->curexc_value;

*p_traceback = tstate->curexc_traceback;

tstate->curexc_type = NULL;

tstate->curexc_value = NULL;

tstate->curexc_traceback = NULL;

}

PyErr_Clear(void)

{

PyErr_Restore(NULL, NULL, NULL);

}

PyErr_GetExcInfo(PyObject **p_type, PyObject **p_value, PyObject **p_traceback)

{

PyThreadState *tstate = PyThreadState_GET();

_PyErr_StackItem *exc_info = _PyErr_GetTopmostException(tstate);

*p_type = exc_info->exc_type;

*p_value = exc_info->exc_value;

*p_traceback = exc_info->exc_traceback;

Py_XINCREF(*p_type);

Py_XINCREF(*p_value);

Py_XINCREF(*p_traceback);

}

PyErr_SetExcInfo(PyObject *p_type, PyObject *p_value, PyObject *p_traceback)

{

PyObject *oldtype, *oldvalue, *oldtraceback;

PyThreadState *tstate = PyThreadState_GET();

oldtype = tstate->exc_info->exc_type;

oldvalue = tstate->exc_info->exc_value;

oldtraceback = tstate->exc_info->exc_traceback;

tstate->exc_info->exc_type = p_type;

tstate->exc_info->exc_value = p_value;

tstate->exc_info->exc_traceback = p_traceback;

Py_XDECREF(oldtype);

Py_XDECREF(oldvalue);

Py_XDECREF(oldtraceback);

}

_PyErr_ChainExceptions(PyObject *exc, PyObject *val, PyObject *tb)

{

if (exc == NULL)

return;

if (PyErr_Occurred()) {

PyObject *exc2, *val2, *tb2;

PyErr_Fetch(&exc2, &val2, &tb2);

PyErr_NormalizeException(&exc, &val, &tb);

if (tb != NULL) {

PyException_SetTraceback(val, tb);

Py_DECREF(tb);

}

Py_DECREF(exc);

PyErr_NormalizeException(&exc2, &val2, &tb2);

PyException_SetContext(val2, val);

PyErr_Restore(exc2, val2, tb2);

}

else {

PyErr_Restore(exc, val, tb);

}

}

static PyObject *

_PyErr_FormatVFromCause(PyObject *exception, const char *format, va_list vargs)

{

PyObject *exc, *val, *val2, *tb;

assert(PyErr_Occurred());

PyErr_Fetch(&exc, &val, &tb);

PyErr_NormalizeException(&exc, &val, &tb);

if (tb != NULL) {

PyException_SetTraceback(val, tb);

Py_DECREF(tb);

}

Py_DECREF(exc);

assert(!PyErr_Occurred());

PyErr_FormatV(exception, format, vargs);

PyErr_Fetch(&exc, &val2, &tb);

PyErr_NormalizeException(&exc, &val2, &tb);

Py_INCREF(val);

PyException_SetCause(val2, val);

PyException_SetContext(val2, val);

PyErr_Restore(exc, val2, tb);

return NULL;

}

PyObject *

_PyErr_FormatFromCause(PyObject *exception, const char *format, ...)

{

va_list vargs;

#ifdef HAVE_STDARG_PROTOTYPES

va_start(vargs, format);

va_start(vargs);

_PyErr_FormatVFromCause(exception, format, vargs);

va_end(vargs);

return NULL;

}

PyErr_BadArgument(void)

{

PyErr_SetString(PyExc_TypeError,

"bad argument type for built-in operation");

return 0;

}

PyObject *

PyErr_NoMemory(void)

{

if (Py_TYPE(PyExc_MemoryError) == NULL) {

/* PyErr_NoMemory() has been called before PyExc_MemoryError has been

Py_FatalError("Out of memory and PyExc_MemoryError is not "

"initialized yet");

}

PyErr_SetNone(PyExc_MemoryError);

return NULL;

}

PyObject *

PyErr_SetFromErrnoWithFilenameObject(PyObject *exc, PyObject *filenameObject)

{

return PyErr_SetFromErrnoWithFilenameObjects(exc, filenameObject, NULL);

}

PyObject *

PyErr_SetFromErrnoWithFilenameObjects(PyObject *exc, PyObject *filenameObject, PyObject *filenameObject2)

{

PyObject *message;

PyObject *v, *args;

int i = errno;

#ifdef MS_WINDOWS

WCHAR *s_buf = NULL;

#endif /* Unix/Windows */

#ifdef EINTR

if (i == EINTR && PyErr_CheckSignals())

return NULL;

#ifndef MS_WINDOWS

if (i != 0) {

char *s = strerror(i);

message = PyUnicode_DecodeLocale(s, "surrogateescape");

}

else {

/* Sometimes errno didn't get set */

message = PyUnicode_FromString("Error");

}

if (i == 0)

message = PyUnicode_FromString("Error"); /* Sometimes errno didn't get set */

else

{

/* Note that the Win32 errors do not lineup with the

if (i > 0 && i < _sys_nerr) {

message = PyUnicode_FromString(_sys_errlist[i]);

}

else {

int len = FormatMessageW(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM |

FORMAT_MESSAGE_IGNORE_INSERTS,

NULL, /* no message source */

i,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

/* Default language */

(LPWSTR) &s_buf,

0, /* size not used */

NULL); /* no args */

if (len==0) {

/* Only ever seen this in out-of-mem

s_buf = NULL;

message = PyUnicode_FromFormat("Windows Error 0x%x", i);

} else {

/* remove trailing cr/lf and dots */

while (len > 0 && (s_buf[len-1] <= L' ' || s_buf[len-1] == L'.'))

s_buf[--len] = L'\0';

message = PyUnicode_FromWideChar(s_buf, len);

}

}

}

#endif /* Unix/Windows */

if (message == NULL)

{

#ifdef MS_WINDOWS

LocalFree(s_buf);

return NULL;

}

if (filenameObject != NULL) {

if (filenameObject2 != NULL)

args = Py_BuildValue("(iOOiO)", i, message, filenameObject, 0, filenameObject2);

else

args = Py_BuildValue("(iOO)", i, message, filenameObject);

} else {

assert(filenameObject2 == NULL);

args = Py_BuildValue("(iO)", i, message);

}

Py_DECREF(message);

if (args != NULL) {

v = PyObject_Call(exc, args, NULL);

Py_DECREF(args);

if (v != NULL) {

PyErr_SetObject((PyObject *) Py_TYPE(v), v);

Py_DECREF(v);

}

}

#ifdef MS_WINDOWS

LocalFree(s_buf);

return NULL;

}

PyObject *

PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)

{

PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;

PyObject *result = PyErr_SetFromErrnoWithFilenameObjects(exc, name, NULL);

Py_XDECREF(name);

return result;

}

#ifdef MS_WINDOWS

PyObject *

PyErr_SetFromErrnoWithUnicodeFilename(PyObject *exc, const Py_UNICODE *filename)

{

PyObject *name = filename ? PyUnicode_FromWideChar(filename, -1) : NULL;

PyObject *result = PyErr_SetFromErrnoWithFilenameObjects(exc, name, NULL);

Py_XDECREF(name);

return result;

}

#endif /* MS_WINDOWS */

PyObject *

PyErr_SetFromErrno(PyObject *exc)

{

return PyErr_SetFromErrnoWithFilenameObjects(exc, NULL, NULL);

}

#ifdef MS_WINDOWS

PyObject *PyErr_SetExcFromWindowsErrWithFilenameObject(

PyObject *exc,

int ierr,

PyObject *filenameObject)

{

return PyErr_SetExcFromWindowsErrWithFilenameObjects(exc, ierr,

filenameObject, NULL);

}

PyObject *PyErr_SetExcFromWindowsErrWithFilenameObjects(

PyObject *filenameObject2)

{

int len;

WCHAR *s_buf = NULL; /* Free via LocalFree */

PyObject *message;

PyObject *args, *v;

DWORD err = (DWORD)ierr;

if (err==0) err = GetLastError();

len = FormatMessageW(

/* Error API error */

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM |

FORMAT_MESSAGE_IGNORE_INSERTS,

NULL, /* no message source */

err,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT), /* Default language */

(LPWSTR) &s_buf,

0, /* size not used */

NULL); /* no args */

if (len==0) {

/* Only seen this in out of mem situations */

message = PyUnicode_FromFormat("Windows Error 0x%x", err);

s_buf = NULL;

} else {

/* remove trailing cr/lf and dots */

while (len > 0 && (s_buf[len-1] <= L' ' || s_buf[len-1] == L'.'))

s_buf[--len] = L'\0';

message = PyUnicode_FromWideChar(s_buf, len);

}

if (message == NULL)

{

LocalFree(s_buf);

return NULL;

}

if (filenameObject == NULL) {

assert(filenameObject2 == NULL);

filenameObject = filenameObject2 = Py_None;

}

else if (filenameObject2 == NULL)

filenameObject2 = Py_None;

/* This is the constructor signature for OSError.

args = Py_BuildValue("(iOOiO)", 0, message, filenameObject, err, filenameObject2);

Py_DECREF(message);

if (args != NULL) {

v = PyObject_Call(exc, args, NULL);

Py_DECREF(args);

if (v != NULL) {

PyErr_SetObject((PyObject *) Py_TYPE(v), v);

Py_DECREF(v);

}

}

LocalFree(s_buf);

return NULL;

}

PyObject *PyErr_SetExcFromWindowsErrWithFilename(

PyObject *exc,

int ierr,

const char *filename)

{

PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;

PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObjects(exc,

ierr,

name,

NULL);

Py_XDECREF(name);

return ret;

}

PyObject *PyErr_SetExcFromWindowsErrWithUnicodeFilename(

PyObject *exc,

int ierr,

const Py_UNICODE *filename)

{

PyObject *name = filename ? PyUnicode_FromWideChar(filename, -1) : NULL;

PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObjects(exc,

ierr,

name,

NULL);

Py_XDECREF(name);

return ret;

}

PyObject *PyErr_SetExcFromWindowsErr(PyObject *exc, int ierr)

{

return PyErr_SetExcFromWindowsErrWithFilename(exc, ierr, NULL);

}

PyObject *PyErr_SetFromWindowsErr(int ierr)

{

return PyErr_SetExcFromWindowsErrWithFilename(PyExc_OSError,

ierr, NULL);

}

PyObject *PyErr_SetFromWindowsErrWithFilename(

int ierr,

const char *filename)

{

PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;

PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObjects(

PyExc_OSError,

ierr, name, NULL);

Py_XDECREF(name);

return result;

}

PyObject *PyErr_SetFromWindowsErrWithUnicodeFilename(

int ierr,

const Py_UNICODE *filename)

{

PyObject *name = filename ? PyUnicode_FromWideChar(filename, -1) : NULL;

PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObjects(

PyExc_OSError,

ierr, name, NULL);

Py_XDECREF(name);

return result;

}

#endif /* MS_WINDOWS */

PyObject *

PyErr_SetImportErrorSubclass(PyObject *exception, PyObject *msg,

PyObject *name, PyObject *path)

{

int issubclass;

PyObject *kwargs, *error;

issubclass = PyObject_IsSubclass(exception, PyExc_ImportError);

if (issubclass < 0) {

return NULL;

}

else if (!issubclass) {

PyErr_SetString(PyExc_TypeError, "expected a subclass of ImportError");

return NULL;

}

if (msg == NULL) {

PyErr_SetString(PyExc_TypeError, "expected a message argument");

return NULL;

}

if (name == NULL) {

name = Py_None;

}

if (path == NULL) {

path = Py_None;

}

kwargs = PyDict_New();

if (kwargs == NULL) {

return NULL;

}

if (PyDict_SetItemString(kwargs, "name", name) < 0) {

goto done;

}

if (PyDict_SetItemString(kwargs, "path", path) < 0) {

goto done;

}

error = _PyObject_FastCallDict(exception, &msg, 1, kwargs);

if (error != NULL) {

PyErr_SetObject((PyObject *)Py_TYPE(error), error);

Py_DECREF(error);

}

done:

Py_DECREF(kwargs);

return NULL;

}

PyObject *

PyErr_SetImportError(PyObject *msg, PyObject *name, PyObject *path)

{

return PyErr_SetImportErrorSubclass(PyExc_ImportError, msg, name, path);

}

_PyErr_BadInternalCall(const char *filename, int lineno)

{

PyErr_Format(PyExc_SystemError,

"%s:%d: bad argument to internal function",

filename, lineno);

}

#undef PyErr_BadInternalCall

PyErr_BadInternalCall(void)

{

assert(0 && "bad argument to internal function");

PyErr_Format(PyExc_SystemError,

"bad argument to internal function");

}

#define PyErr_BadInternalCall() _PyErr_BadInternalCall(__FILE__, __LINE__)

PyObject *

PyErr_FormatV(PyObject *exception, const char *format, va_list vargs)

{

PyObject* string;

/* Issue #23571: PyUnicode_FromFormatV() must not be called with an

PyErr_Clear();

string = PyUnicode_FromFormatV(format, vargs);

PyErr_SetObject(exception, string);

Py_XDECREF(string);

return NULL;

}

PyObject *

PyErr_Format(PyObject *exception, const char *format, ...)

{

va_list vargs;

#ifdef HAVE_STDARG_PROTOTYPES

va_start(vargs, format);

va_start(vargs);

PyErr_FormatV(exception, format, vargs);

va_end(vargs);

return NULL;

}

PyObject *

PyErr_NewException(const char *name, PyObject *base, PyObject *dict)

{

const char *dot;

PyObject *modulename = NULL;

PyObject *classname = NULL;

PyObject *mydict = NULL;

PyObject *bases = NULL;

PyObject *result = NULL;

dot = strrchr(name, '.');

if (dot == NULL) {

PyErr_SetString(PyExc_SystemError,

"PyErr_NewException: name must be module.class");

return NULL;

}

if (base == NULL)

base = PyExc_Exception;

if (dict == NULL) {

dict = mydict = PyDict_New();

if (dict == NULL)

goto failure;

}

if (PyDict_GetItemString(dict, "__module__") == NULL) {

modulename = PyUnicode_FromStringAndSize(name,

(Py_ssize_t)(dot-name));

if (modulename == NULL)

goto failure;

if (PyDict_SetItemString(dict, "__module__", modulename) != 0)

goto failure;

}

if (PyTuple_Check(base)) {

bases = base;

/* INCREF as we create a new ref in the else branch */

Py_INCREF(bases);

} else {

bases = PyTuple_Pack(1, base);

if (bases == NULL)

goto failure;

}

/* Create a real class. */

result = PyObject_CallFunction((PyObject *)&PyType_Type, "sOO",

dot+1, bases, dict);

failure:

Py_XDECREF(bases);

Py_XDECREF(mydict);

Py_XDECREF(classname);

Py_XDECREF(modulename);

return result;

}

PyObject *

PyErr_NewExceptionWithDoc(const char *name, const char *doc,

PyObject *base, PyObject *dict)

{

int result;

PyObject *ret = NULL;

PyObject *mydict = NULL; /* points to the dict only if we create it */

PyObject *docobj;

if (dict == NULL) {

dict = mydict = PyDict_New();

if (dict == NULL) {

return NULL;

}

}

if (doc != NULL) {

docobj = PyUnicode_FromString(doc);

if (docobj == NULL)

goto failure;

result = PyDict_SetItemString(dict, "__doc__", docobj);

Py_DECREF(docobj);

if (result < 0)

goto failure;

}

ret = PyErr_NewException(name, base, dict);

failure:

Py_XDECREF(mydict);

return ret;

}

PyErr_WriteUnraisable(PyObject *obj)

{

_Py_IDENTIFIER(__module__);

PyObject *f, *t, *v, *tb;

PyObject *moduleName = NULL;

char* className;

PyErr_Fetch(&t, &v, &tb);

f = _PySys_GetObjectId(&PyId_stderr);

if (f == NULL || f == Py_None)

goto done;

if (obj) {

if (PyFile_WriteString("Exception ignored in: ", f) < 0)

goto done;

if (PyFile_WriteObject(obj, f, 0) < 0) {

PyErr_Clear();

if (PyFile_WriteString("<object repr() failed>", f) < 0) {

goto done;

}

}

if (PyFile_WriteString("\n", f) < 0)

goto done;

}

if (PyTraceBack_Print(tb, f) < 0)

goto done;

if (!t)

goto done;

assert(PyExceptionClass_Check(t));

className = PyExceptionClass_Name(t);

if (className != NULL) {

char *dot = strrchr(className, '.');

if (dot != NULL)

className = dot+1;

}

moduleName = _PyObject_GetAttrId(t, &PyId___module__);

if (moduleName == NULL || !PyUnicode_Check(moduleName)) {

PyErr_Clear();

if (PyFile_WriteString("<unknown>", f) < 0)

goto done;

}

else {

if (!_PyUnicode_EqualToASCIIId(moduleName, &PyId_builtins)) {

if (PyFile_WriteObject(moduleName, f, Py_PRINT_RAW) < 0)

goto done;

if (PyFile_WriteString(".", f) < 0)

goto done;

}

}

if (className == NULL) {

if (PyFile_WriteString("<unknown>", f) < 0)