1 files changed, 13 insertions, 0 deletions
diff --git a/Python/getargs.c b/Python/getargs.c
index b96ce3a..ec2eeb15 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -2030,6 +2030,19 @@ parser_clear(struct _PyArg_Parser *parser)
     if (parser->is_kwtuple_owned) {
         Py_CLEAR(parser->kwtuple);
     }
+
+    if (parser->format) {
+        parser->fname = NULL;
+    }
+    else {
+        assert(parser->fname != NULL);
+    }
+    parser->custom_msg = NULL;
+    parser->pos = 0;
+    parser->min = 0;
+    parser->max = 0;
+    parser->is_kwtuple_owned = 0;
+    parser->once.v = 0;
 }
 
 static PyObject*