wesm commented on a change in pull request #7522:
URL: https://github.com/apache/arrow/pull/7522#discussion_r443913968
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File path: cpp/src/arrow/python/arrow_to_pandas.cc
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@@ -1269,13 +1283,18 @@ class DatetimeTZWriter : public DatetimeNanoWriter {
: DatetimeNanoWriter(options, num_rows, 1), timezone_(timezone) {}
protected:
- Status GetResultBlock(PyObject** out) override { return GetBlock1D(out); }
+ Status GetResultBlock(PyObject** out) override {
+ RETURN_NOT_OK(MakeBlock1D());
+ *out = block_arr_.obj();
+ return Status::OK();
+ }
Status AddResultMetadata(PyObject* result) override {
PyObject* py_tz = PyUnicode_FromStringAndSize(
timezone_.c_str(), static_cast<Py_ssize_t>(timezone_.size()));
RETURN_IF_PYERROR();
PyDict_SetItemString(result, "timezone", py_tz);
+ Py_DECREF(py_tz);
Review comment:
This was an small memory leak that users are unlikely to observe but I
found it while looking at usages of PyDict_SetItemString (which increments the
reference count of the passed dict value)
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