Issue #20440: More use of Py_SETREF.

This patch is manually crafted and contains changes that couldn't be handled
automatically.

1 files changed, 5 insertions, 8 deletions

diff --git a/Python/errors.c b/Python/errors.c
index aed2bdc12d..7b67566727 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -315,14 +315,11 @@ finally:
     tstate = PyThreadState_GET();
     if (++tstate->recursion_depth > Py_GetRecursionLimit()) {
         --tstate->recursion_depth;
-        /* throw away the old exception... */
-        Py_DECREF(*exc);
-        Py_DECREF(*val);
-        /* ... and use the recursion error instead */
-        *exc = PyExc_RecursionError;
-        *val = PyExc_RecursionErrorInst;
-        Py_INCREF(*exc);
-        Py_INCREF(*val);
+        /* throw away the old exception and use the recursion error instead */
+        Py_INCREF(PyExc_RecursionError);
+        Py_SETREF(*exc, PyExc_RecursionError);
+        Py_INCREF(PyExc_RecursionErrorInst);
+        Py_SETREF(*val, PyExc_RecursionErrorInst);
         /* just keeping the old traceback */
         return;
     }