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comparison Python/errors.c @ 52711:7e86fa255fc2 legacy-trunk

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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.
author Georg Brandl <georg@python.org>
date Thu, 02 Apr 2009 02:47:44 +0000
parents d01c1d768841
children 54b2cd21ab46
comparison
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52710:b984456196af 52711:7e86fa255fc2
104 /* err might be an instance, so check its class. */ 104 /* err might be an instance, so check its class. */
105 if (PyExceptionInstance_Check(err)) 105 if (PyExceptionInstance_Check(err))
106 err = PyExceptionInstance_Class(err); 106 err = PyExceptionInstance_Class(err);
107 107
108 if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) { 108 if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) {
109 int res = 0; 109 int res = 0, reclimit;
110 PyObject *exception, *value, *tb; 110 PyObject *exception, *value, *tb;
111 PyErr_Fetch(&exception, &value, &tb); 111 PyErr_Fetch(&exception, &value, &tb);
112 /* Temporarily bump the recursion limit, so that in the most
113 common case PyObject_IsSubclass will not raise a recursion
114 error we have to ignore anyway. */
115 reclimit = Py_GetRecursionLimit();
116 Py_SetRecursionLimit(reclimit + 5);
112 res = PyObject_IsSubclass(err, exc); 117 res = PyObject_IsSubclass(err, exc);
118 Py_SetRecursionLimit(reclimit);
113 /* This function must not fail, so print the error here */ 119 /* This function must not fail, so print the error here */
114 if (res == -1) { 120 if (res == -1) {
115 PyErr_WriteUnraisable(err); 121 PyErr_WriteUnraisable(err);
116 res = 0; 122 res = 0;
117 } 123 }