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refactor __del__ exception handler into PyErr_WriteUnraisable

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add sanity check to gc: if an exception occurs during GC, call
PyErr_WriteUnraisable and then call Py_FatalEror.
This commit is contained in:
Jeremy Hylton 2000-09-01 02:47:25 +00:00
parent b9ce5ada37
commit b709df3810
5 changed files with 50 additions and 21 deletions
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27
Python/errors.c
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@ -450,3 +450,30 @@ PyErr_NewException(char *name, PyObject *base, PyObject *dict)
Py_XDECREF(modulename);
return result;
}
/* Call when an exception has occurred but there is no way for Python
to handle it. Examples: exception in __del__ or during GC. */
void
PyErr_WriteUnraisable(PyObject *obj)
{
PyObject *f, *t, *v, *tb;
PyErr_Fetch(&t, &v, &tb);
f = PySys_GetObject("stderr");
if (f != NULL) {
PyFile_WriteString("Exception ", f);
if (t) {
PyFile_WriteObject(t, f, Py_PRINT_RAW);
if (v && v != Py_None) {
PyFile_WriteString(": ", f);
PyFile_WriteObject(v, f, 0);
}
}
PyFile_WriteString(" in ", f);
PyFile_WriteObject(obj, f, 0);
PyFile_WriteString(" ignored\n", f);
PyErr_Clear(); /* Just in case */
}
Py_XDECREF(t);
Py_XDECREF(v);
Py_XDECREF(tb);
}