[Bug] fix get_parsed_paths() subscript out of range (#4585)

2020-09-12 16:04:21 +08:00
parent e26d5d0da0
commit 4caa6f9b33
1 changed files with 3 additions and 0 deletions
--- 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);