BUG: Add missing error checking in conversion from integers to datetime types

This prevents SystemErrors on overflow, fixing gh-13062

2 files changed, 15 insertions, 0 deletions

diff --git a/numpy/core/src/multiarray/datetime.c b/numpy/core/src/multiarray/datetime.c
index 54d19d993..a33f643f1 100644
--- a/numpy/core/src/multiarray/datetime.c
+++ b/numpy/core/src/multiarray/datetime.c
@@ -2468,6 +2468,9 @@ convert_pyobject_to_datetime(PyArray_DatetimeMetaData *meta, PyObject *obj,
             return -1;
         }
         *out = PyLong_AsLongLong(obj);
+        if (error_converting(*out)) {
+            return -1;
+        }
         return 0;
     }
     /* Datetime scalar */
@@ -2666,6 +2669,9 @@ convert_pyobject_to_timedelta(PyArray_DatetimeMetaData *meta, PyObject *obj,
         }
 
         *out = PyLong_AsLongLong(obj);
+        if (error_converting(*out)) {
+            return -1;
+        }
         return 0;
     }
     /* Timedelta scalar */
@@ -2853,6 +2859,9 @@ convert_pyobject_to_timedelta(PyArray_DatetimeMetaData *meta, PyObject *obj,
         }
 
         *out = PyLong_AsLongLong(obj);
+        if (error_converting(*out)) {
+            return -1;
+        }
         return 0;
     }
     else {
diff --git a/numpy/core/tests/test_datetime.py b/numpy/core/tests/test_datetime.py
index 43d29f42d..8d480e7a3 100644
--- a/numpy/core/tests/test_datetime.py
+++ b/numpy/core/tests/test_datetime.py
@@ -1543,6 +1543,12 @@ class TestDateTime(object):
 
         assert_equal(x[0].astype(np.int64), 322689600000000000)
 
+        # gh-13062
+        with pytest.raises(OverflowError):
+            np.datetime64(2**64, 'D')
+        with pytest.raises(OverflowError):
+            np.timedelta64(2**64, 'D')
+
     def test_datetime_as_string(self):
         # Check all the units with default string conversion
         date = '1959-10-13'