From 745f4dd816aeea5a2a2ba5f8dbf8f80df3a46bdf Mon Sep 17 00:00:00 2001
From: Nan Xiao <nan@chinadtrace.org>
Date: Wed, 5 Apr 2017 17:56:17 +0800
Subject: [PATCH] Check NULL value of result.

---
 example/example.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/example/example.cpp b/example/example.cpp
index 62a5077..2b67c90 100644
--- a/example/example.cpp
+++ b/example/example.cpp
@@ -19,6 +19,10 @@ int main(int argc, char *argv[]) {
     hsql::SQLParserResult* result = hsql::SQLParser::parseSQLString(query);
 
     // check whether the parsing was successful
+    if (!result) {
+        return -1;
+    }
+
     if (result->isValid()) {
         printf("Parsed successfully!\n");
         printf("Number of statements: %lu\n", result->size());