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Issue #4237: io.FileIO() was raising invalid warnings caused by insufficient initialization of PyFileIOObject struct members.

This commit is contained in:
Christian Heimes 2008-10-30 21:23:35 +00:00
parent fec925b315
commit df32b3967c
2 changed files with 11 additions and 2 deletions
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7
Lib/test/test_io.py
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@ -1237,6 +1237,13 @@ class MiscIOTest(unittest.TestCase):
else:
self.assert_(issubclass(obj, io.IOBase))
def test_fileio_warnings(self):
with support.check_warnings() as w:
self.assertEqual(w.warnings, [])
self.assertRaises(TypeError, io.FileIO, [])
self.assertEqual(w.warnings, [])
self.assertRaises(ValueError, io.FileIO, "/some/invalid/name", "rt")
self.assertEqual(w.warnings, [])
def test_main():
support.run_unittest(IOTest, BytesIOTest, StringIOTest,

6
Modules/_fileio.c
View File

@ -86,6 +86,10 @@ fileio_new(PyTypeObject *type, PyObject *args, PyObject *kews)
self = (PyFileIOObject *) type->tp_alloc(type, 0);
if (self != NULL) {
self->fd = -1;
self->readable = 0;
self->writable = 0;
self->seekable = -1;
self->closefd = 1;
self->weakreflist = NULL;
}
@ -179,8 +183,6 @@ fileio_init(PyObject *oself, PyObject *args, PyObject *kwds)
}
}
self->readable = self->writable = 0;
self->seekable = -1;
s = mode;
while (*s) {
switch (*s++) {