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(initerrors): Make sure that the exception tuples ("base-classes" when 

string-based exceptions are used) reflect the real class hierarchy,
i.e. that SystemExit derives from Exception not StandardError.
This commit is contained in:
Barry Warsaw 1999-02-24 00:35:43 +00:00
parent 40db48c5ec
commit 72b715d979
1 changed files with 18 additions and 8 deletions
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26
Python/bltinmodule.c
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@ -2153,7 +2153,7 @@ static void
initerrors(dict)
PyObject *dict;
{
int i;
int i, j;
int exccnt = 0;
for (i = 0; bltin_exc[i].name; i++, exccnt++) {
Py_XDECREF(*bltin_exc[i].exc);
@ -2190,23 +2190,33 @@ initerrors(dict)
PyTuple_SET_ITEM(PyExc_EnvironmentError, 1, PyExc_OSError);
PyDict_SetItemString(dict, "EnvironmentError", PyExc_EnvironmentError);
PyExc_StandardError = PyTuple_New(exccnt-2);
for (i = 2; bltin_exc[i].name; i++) {
/* missing from the StandardError tuple: Exception, StandardError,
* and SystemExit
*/
PyExc_StandardError = PyTuple_New(exccnt-3);
for (i = 2, j = 0; bltin_exc[i].name; i++) {
PyObject *exc = *bltin_exc[i].exc;
Py_INCREF(exc);
PyTuple_SET_ITEM(PyExc_StandardError, i-2, exc);
/* SystemExit is not an error, but it is an exception */
if (exc != PyExc_SystemExit) {
Py_INCREF(exc);
PyTuple_SET_ITEM(PyExc_StandardError, j++, exc);
}
}
PyDict_SetItemString(dict, "StandardError", PyExc_StandardError);
/* Exception is treated differently; for now, it's == StandardError */
PyExc_Exception = PyExc_StandardError;
Py_INCREF(PyExc_Exception);
/* Exception is a 2-tuple */
PyExc_Exception = PyTuple_New(2);
Py_INCREF(PyExc_SystemExit);
PyTuple_SET_ITEM(PyExc_Exception, 0, PyExc_SystemExit);
Py_INCREF(PyExc_StandardError);
PyTuple_SET_ITEM(PyExc_Exception, 1, PyExc_StandardError);
PyDict_SetItemString(dict, "Exception", PyExc_Exception);
if (PyErr_Occurred())
Py_FatalError("Could not initialize built-in string exceptions");
}
static void
finierrors()
{