python
diff --git a/‎Misc/NEWS.d/next/Library/2023-06-09-21-40-45.gh-issue-105375._sZilh.rst
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+1Lines changed: 1 addition & 0 deletions b/‎Misc/NEWS.d/next/Library/2023-06-09-21-40-45.gh-issue-105375._sZilh.rst
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+1Lines changed: 1 addition & 0 deletions
diff --git a/‎Modules/_ctypes/callbacks.c
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+14-4Lines changed: 14 additions & 4 deletions b/‎Modules/_ctypes/callbacks.c
Copy file name to clipboardExpand all lines: Modules/_ctypes/callbacks.c
+14-4Lines changed: 14 additions & 4 deletions
@@ -0,0 +1 @@
+Fix bugs in :mod:`_ctypes` where exceptions could end up being overwritten.
@@ -479,12 +479,22 @@ long Call_GetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 
     {
         PyObject *py_rclsid = PyLong_FromVoidPtr((void *)rclsid);
+        if (py_rclsid == NULL) {
+            Py_DECREF(func);
+            PyErr_WriteUnraisable(context ? context : Py_None);
+            return E_FAIL;
+        }
         PyObject *py_riid = PyLong_FromVoidPtr((void *)riid);
+        if (py_riid == NULL) {
+            Py_DECREF(func);
+            Py_DECREF(py_rclsid);
+            PyErr_WriteUnraisable(context ? context : Py_None);
+            return E_FAIL;
+        }
         PyObject *py_ppv = PyLong_FromVoidPtr(ppv);
-        if (!py_rclsid || !py_riid || !py_ppv) {
-            Py_XDECREF(py_rclsid);
-            Py_XDECREF(py_riid);
-            Py_XDECREF(py_ppv);
+        if (py_ppv == NULL) {
+            Py_DECREF(py_rclsid);
+            Py_DECREF(py_riid);
             Py_DECREF(func);
             PyErr_WriteUnraisable(context ? context : Py_None);
             return E_FAIL;
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix bugs in :mod:`_ctypes` where exceptions could end up being overwritten.