From df618f08a6f1d6d8ffba7a9cba99f14180d5dae9 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Mon, 15 Jan 2024 17:15:02 +0100
Subject: [PATCH] tests: Add test for issue #661

---
 testparser.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/testparser.c b/testparser.c
index 8f056a22..08965b50 100644
--- a/testparser.c
+++ b/testparser.c
@@ -10,6 +10,26 @@
 
 #include <string.h>
 
+static int
+testStandaloneWithEncoding(void) {
+    xmlDocPtr doc;
+    const char *str =
+        "<?xml version=\"1.0\" standalone=\"yes\"?>\n"
+        "<doc></doc>\n";
+    int err = 0;
+
+    xmlResetLastError();
+
+    doc = xmlReadDoc(BAD_CAST str, NULL, "UTF-8", 0);
+    if (doc == NULL) {
+        fprintf(stderr, "xmlReadDoc failed\n");
+        err = 1;
+    }
+    xmlFreeDoc(doc);
+
+    return err;
+}
+
 static int
 testUnsupportedEncoding(void) {
     xmlDocPtr doc;
@@ -251,6 +271,7 @@ int
 main(void) {
     int err = 0;
 
+    err |= testStandaloneWithEncoding();
     err |= testUnsupportedEncoding();
 #ifdef LIBXML_SAX1_ENABLED
     err |= testBalancedChunk();