Mercurial > cpython-lru_cache-weakref
diff Objects/classobject.c @ 35606:77571f71b3e6 2.4
- On 64-bit platforms, when __len__() returns a value that cannot be
represented as a C int, raise OverflowError.
(Will forward-port.)
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Tue, 20 Sep 2005 16:36:07 +0000 |
| parents | aef713de7a23 |
| children | 0a5cf25945e2 |
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--- a/Objects/classobject.c Tue Sep 20 15:17:16 2005 +0000 +++ b/Objects/classobject.c Tue Sep 20 16:36:07 2005 +0000 @@ -1013,7 +1013,17 @@ if (res == NULL) return -1; if (PyInt_Check(res)) { - outcome = PyInt_AsLong(res); + long temp = PyInt_AsLong(res); + outcome = (int)temp; +#if SIZEOF_INT < SIZEOF_LONG + /* Overflow check -- range of PyInt is more than C int */ + if (outcome != temp) { + PyErr_SetString(PyExc_OverflowError, + "__len__() should return 0 <= outcome < 2**31"); + outcome = -1; + } + else +#endif if (outcome < 0) PyErr_SetString(PyExc_ValueError, "__len__() should return >= 0");