Issue #19437: Fix fill_and_set_sslerror() of _ssl, handle Py_BuildValue()

failure

Don't call PyObject_CallObject() with NULL parameters and an exception set.

1 files changed, 5 insertions, 1 deletions

diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 34a141bd27..ffcc4a9f61 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -346,14 +346,18 @@ fill_and_set_sslerror(PyObject *type, int ssl_errno, const char *errstr,
                                    lib_obj, errstr, lineno);
     else
         msg = PyUnicode_FromFormat("%s (_ssl.c:%d)", errstr, lineno);
-
     if (msg == NULL)
         goto fail;
+
     init_value = Py_BuildValue("iN", ssl_errno, msg);
+    if (init_value == NULL)
+        goto fail;
+
     err_value = PyObject_CallObject(type, init_value);
     Py_DECREF(init_value);
     if (err_value == NULL)
         goto fail;
+
     if (reason_obj == NULL)
         reason_obj = Py_None;
     if (_PyObject_SetAttrId(err_value, &PyId_reason, reason_obj))