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In PyErr_GivenExceptionMatches, temporarily bump the recursion 

limit, so that in the most common case PyObject_IsSubclass will
not raise a recursion error we have to ignore anyway.
This commit is contained in:
Georg Brandl 2009-04-02 02:47:44 +00:00
parent 4724f40bcb
commit 4b5c53aba5
1 changed files with 7 additions and 1 deletions
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8
Python/errors.c
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@ -106,10 +106,16 @@ PyErr_GivenExceptionMatches(PyObject *err, PyObject *exc)
err = PyExceptionInstance_Class(err);
if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) {
int res = 0;
int res = 0, reclimit;
PyObject *exception, *value, *tb;
PyErr_Fetch(&exception, &value, &tb);
/* Temporarily bump the recursion limit, so that in the most
common case PyObject_IsSubclass will not raise a recursion
error we have to ignore anyway. */
reclimit = Py_GetRecursionLimit();
Py_SetRecursionLimit(reclimit + 5);
res = PyObject_IsSubclass(err, exc);
Py_SetRecursionLimit(reclimit);
/* This function must not fail, so print the error here */
if (res == -1) {
PyErr_WriteUnraisable(err);