From b7d56ef7f158813816a31fa05ce0e48b98bead82 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Fri, 22 Sep 2023 17:03:56 +0200
Subject: [PATCH] malloc-fail: Report malloc failure in xmlRegEpxFromParse

Reference:https://github.com/GNOME/libxml2/commit/b7d56ef7f158813816a31fa05ce0e48b98bead82
Conflict:Don't change fuzz/*, the related code does not exist. For details, see Submission:
https://github.com/GNOME/libxml2/commit/42322eba820022eaebb9b6e7c083a8aadddea286

Also check whether malloc failures are reported when fuzzing.
---
 xmlregexp.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/xmlregexp.c b/xmlregexp.c
index b0111e2..22534a7 100644
--- a/xmlregexp.c
+++ b/xmlregexp.c
@@ -481,7 +481,11 @@ xmlRegEpxFromParse(xmlRegParserCtxtPtr ctxt) {
     ret->determinist = ctxt->determinist;
     ret->flags = ctxt->flags;
     if (ret->determinist == -1) {
-        xmlRegexpIsDeterminist(ret);
+        if (xmlRegexpIsDeterminist(ret) < 0) {
+            xmlRegexpErrMemory(ctxt, "checking determinism");
+            xmlFree(ret);
+            return(NULL);
+        }
     }
 
     if ((ret->determinist != 0) &&
-- 
2.33.0