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Issue #11576: Fixed timedelta subtraction glitch on big timedelta values

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This commit is contained in:
Alexander Belopolsky 2011-04-05 20:07:38 -04:00
parent 04026cf56c
commit b6f5ec7370
3 changed files with 19 additions and 8 deletions
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15
Modules/_datetimemodule.c
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@ -1801,13 +1801,14 @@ delta_subtract(PyObject *left, PyObject *right)
if (PyDelta_Check(left) && PyDelta_Check(right)) {
/* delta - delta */
PyObject *minus_right = PyNumber_Negative(right);
if (minus_right) {
result = delta_add(left, minus_right);
Py_DECREF(minus_right);
}
else
result = NULL;
/* The C-level additions can't overflow because of the
* invariant bounds.
*/
int days = GET_TD_DAYS(left) - GET_TD_DAYS(right);
int seconds = GET_TD_SECONDS(left) - GET_TD_SECONDS(right);
int microseconds = GET_TD_MICROSECONDS(left) -
GET_TD_MICROSECONDS(right);
result = new_delta(days, seconds, microseconds, 1);
}
if (result == Py_NotImplemented)