From 09797c139e5b0168c87f41b2cea1078d7244638d Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Tue, 5 Mar 2019 15:14:34 +0100
Subject: [PATCH] Fix null deref in xmlregexp error path

Thanks to Shaobo He for the report.
---
 xmlregexp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xmlregexp.c b/xmlregexp.c
index d255fbf0..9e9c3752 100644
--- a/xmlregexp.c
+++ b/xmlregexp.c
@@ -5537,6 +5537,8 @@ xmlRegexpIsDeterminist(xmlRegexpPtr comp) {
 	return(comp->determinist);
 
     am = xmlNewAutomata();
+    if (am == NULL)
+        return(-1);
     if (am->states != NULL) {
 	int i;