traverseda
/
cpython
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fix one visible and several possible refleaks in rangeobject.c 

In some cases, the code was just reordered to allow for less decrefing.
This commit is contained in:
Benjamin Peterson 2009-11-16 00:34:25 +00:00
parent 91799ae3e1
commit 36fbb730a7
1 changed files with 17 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
Objects/rangeobject.c
View File

@ -533,6 +533,7 @@ int_range_iter(long start, long stop, long step)
it->step = step;
ulen = get_len_of_range(start, stop, step);
if (ulen > (unsigned long)LONG_MAX) {
Py_DECREF(it);
PyErr_SetString(PyExc_OverflowError,
"range too large to represent as a range_iterator");
return NULL;
@ -584,16 +585,14 @@ longrangeiter_next(longrangeiterobject *r)
if (!one)
return NULL;
product = PyNumber_Multiply(r->index, r->step);
if (!product) {
Py_DECREF(one);
return NULL;
}
new_index = PyNumber_Add(r->index, one);
Py_DECREF(one);
if (!new_index) {
Py_DECREF(product);
if (!new_index)
return NULL;
product = PyNumber_Multiply(r->index, r->step);
if (!product) {
Py_DECREF(new_index);
return NULL;
}
@ -603,6 +602,9 @@ longrangeiter_next(longrangeiterobject *r)
Py_DECREF(r->index);
r->index = new_index;
}
else {
Py_DECREF(new_index);
}
return result;
}
@ -781,6 +783,9 @@ long_range:
if (!len)
goto create_failure;
/* Steal reference to len. */
it->len = len;
one = PyLong_FromLong(1);
if (!one)
goto create_failure;
@ -802,24 +807,16 @@ long_range:
goto create_failure;
it->step = PyNumber_Negative(range->step);
if (!it->step) {
Py_DECREF(it->start);
if (!it->step)
goto create_failure;
}
/* Steal reference to len. */
it->len = len;
it->index = PyLong_FromLong(0);
if (!it->index) {
Py_DECREF(it);
return NULL;
}
if (!it->index)
goto create_failure;
return (PyObject *)it;
create_failure:
Py_XDECREF(len);
PyObject_Del(it);
Py_DECREF(it);
return NULL;
}