--- parser3/tests/results/431.processed	2024/10/18 01:32:50	1.3
+++ parser3/tests/results/431.processed	2024/10/26 00:21:35	1.5
@@ -1,5 +1,5 @@
 Content-Type: text/html
-Content-Length: 1240
+Content-Length: 1465
 
 0.1 Exception type: number.format,
 Source: copy,
@@ -124,4 +124,23 @@ key
 "4":"v5",
 "5":"v12",
 "6":"v10"
-}
\ No newline at end of file
+}
+3.10 7 {
+"0":"v5",
+"1":"v7",
+"2":"",
+"3":"v12",
+"4":false,
+"5":{},
+"6":"last"
+}
+5 {
+"0":"v5",
+"1":"v7",
+"2":"v12",
+"3":false,
+"4":"last"
+}
+Exception type: parser.runtime,
+Source: bug,
+Comment: param must be empty or 'undef'