From 06d4fe57758ff73f22d6f8e7cfcea88a6e97f642 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Javier=20Jaramago=20Fern=C3=A1ndez?=
 <jaramago.fernandez.javier@gmail.com>
Date: Mon, 19 Dec 2022 13:24:22 +0100
Subject: [PATCH] Fix invalid memory forwarding to 'MyDS_real_query' for empty
 queries

---
 include/MySQL_Data_Stream.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/MySQL_Data_Stream.h b/include/MySQL_Data_Stream.h
index 0c71582b2..f4035856c 100644
--- a/include/MySQL_Data_Stream.h
+++ b/include/MySQL_Data_Stream.h
@@ -35,8 +35,12 @@ class MyDS_real_query {
 */
 		pkt.ptr=_pkt->ptr;
 		pkt.size=_pkt->size;
-		QueryPtr=(char *)pkt.ptr+5;
 		QuerySize=pkt.size-5;
+		if (QuerySize == 0) {
+			QueryPtr=const_cast<char*>("");
+		} else {
+			QueryPtr=(char *)pkt.ptr+5;
+		}
 	}
 	void end() {
 		l_free(pkt.size,pkt.ptr);