8000 BUG: Fix ticket #1588/gh issue #398, refcount error in clip by certik · Pull Request #405 · numpy/numpy · GitHub
[go: up one dir, main page]
Skip to content

BUG: Fix ticket #1588/gh issue #398, refcount error in clip #405

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Aug 31, 2012
Merged

BUG: Fix ticket #1588/gh issue #398, refcount error in clip #405

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
8b2e6be
BUG: Fix ticket #1588/gh issue #398, refcount error in clip
mwiebe Aug 31, 2012
1039880
BUG: Add a test for Ticket #1588
certik Aug 31, 2012
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Next Next commit
BUG: Fix ticket #1588/gh issue #398, refcount error in clip 
This patch enforces a strict dichotomy for the variables 'indescr'
and 'newdescr', so they are either NULL, or they own a reference.
Following the consequences of this allowed the reference error
to be tracked down.
  • Loading branch information
@mwiebe @certik
mwiebe authored and certik committed Aug 31, 2012
commit 8b2e6bed904415006d59344b27a0b23b35fab9ca
26 changes: 17 additions & 9 deletions numpy/core/src/multiarray/calculation.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -895,7 +895,7 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
PyArrayObject *maxa = NULL;
PyArrayObject *mina = NULL;
PyArrayObject *newout = NULL, *newin = NULL;
PyArray_Descr *indescr, *newdescr;
PyArray_Descr *indescr = NULL, *newdescr = NULL;
char *max_data, *min_data;
PyObject *zero;

Expand All @@ -922,23 +922,24 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
/* Use the fast scalar clip function */

/* First we need to figure out the correct type */
indescr = NULL;
if (min != NULL) {
indescr = PyArray_DescrFromObject(min, NULL);
if (indescr == NULL) {
return NULL;
goto fail;
}
}
if (max != NULL) {
newdescr = PyArray_DescrFromObject(max, indescr);
Py_XDECREF(indescr);
indescr = NULL;
if (newdescr == NULL) {
return NULL;
goto fail;
}
}
else {
/* Steal the reference */
newdescr = indescr;
indescr = NULL;
}


Expand All @@ -950,8 +951,12 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
if (PyArray_ScalarKind(newdescr->type_num, NULL) >
PyArray_ScalarKind(PyArray_DESCR(self)->type_num, NULL)) {
indescr = PyArray_PromoteTypes(newdescr, PyArray_DESCR(self));
if (indescr == NULL) {
goto fail;
}
func = indescr->f->fastclip;
if (func == NULL) {
Py_DECREF(indescr);
return _slow_array_clip(self, min, max, out);
}
}
Expand All @@ -960,11 +965,13 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
Py_INCREF(indescr);
}
Py_DECREF(newdescr);
newdescr = NULL;

if (!PyDataType_ISNOTSWAPPED(indescr)) {
PyArray_Descr *descr2;
descr2 = PyArray_DescrNewByteorder(indescr, '=');
Py_DECREF(indescr);
indescr = NULL;
if (descr2 == NULL) {
goto fail;
}
Expand All @@ -973,16 +980,13 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o

/* Convert max to an array */
if (max != NULL) {
Py_INCREF(indescr);
maxa = (PyArrayObject *)PyArray_FromAny(max, indescr, 0, 0,
NPY_ARRAY_DEFAULT, NULL);
if (maxa == NULL) {
return NULL;
goto fail;
}
}
else {
/* Side-effect of PyArray_FromAny */
Py_DECREF(indescr);
}

/*
* If we are unsigned, then make sure min is not < 0
Expand Down Expand Up @@ -1147,6 +1151,8 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
func(PyArray_DATA(newin), PyArray_SIZE(newin), min_data, max_data, PyArray_DATA(newout));

/* Clean up temporary variables */
Py_XDECREF(indescr);
Py_XDECREF(newdescr);
Py_XDECREF(mina);
Py_XDECREF(maxa);
Py_DECREF(newin);
Expand All @@ -1155,6 +1161,8 @@ PyArray_Clip(PyArrayObject *self, PyObject *min, PyObject *max, PyArrayObject *o
return (PyObject *)out;

fail:
Py_XDECREF(indescr);
Py_XDECREF(newdescr);
Py_XDECREF(maxa);
Py_XDECREF(mina);
Py_XDECREF(newin);
Expand Down
0