From 4caa6f9b33bdcf3c211ae8f9f55329a0d4855cdc Mon Sep 17 00:00:00 2001
From: HuangWei <huangwei@apache.org>
Date: Sat, 12 Sep 2020 16:04:21 +0800
Subject: [PATCH] [Bug] fix get_parsed_paths() subscript out of range (#4585)

---
 be/src/exprs/json_functions.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/be/src/exprs/json_functions.cpp b/be/src/exprs/json_functions.cpp
index 2d9985a696..86d1f1215c 100644
--- a/be/src/exprs/json_functions.cpp
+++ b/be/src/exprs/json_functions.cpp
@@ -371,6 +371,9 @@ void JsonFunctions::parse_json_paths(
 void JsonFunctions::get_parsed_paths(
         const std::vector<std::string>& path_exprs,
         std::vector<JsonPath>* parsed_paths) {
+    if(path_exprs.empty()){
+        return;
+    }
 
     if (path_exprs[0] != "$") {
         parsed_paths->emplace_back("", -1, false);