From 81741ea4c0df9a06ae2f66900c41e2942f88ffda Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Thu, 21 Sep 2023 16:29:28 +0200
Subject: [PATCH] xmlreader: Fix EOF detection in xmlTextReaderPushData

---
 xmlreader.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/xmlreader.c b/xmlreader.c
index 791e47ac..c04cb113 100644
--- a/xmlreader.c
+++ b/xmlreader.c
@@ -727,11 +727,10 @@ xmlTextReaderPushData(xmlTextReaderPtr reader) {
 	     */
 	    if (reader->mode != XML_TEXTREADER_MODE_EOF) {
 		val = xmlParserInputBufferRead(reader->input, 4096);
-		if ((val == 0) &&
-		    (reader->input->readcallback == NULL)) {
+		if (val == 0) {
 		    if (xmlBufUse(inbuf) == reader->cur) {
 			reader->mode = XML_TEXTREADER_MODE_EOF;
-			reader->state = oldstate;
+                        break;
 		    }
 		} else if (val < 0) {
                     xmlGenericError(xmlGenericErrorContext,
@@ -739,10 +738,6 @@ xmlTextReaderPushData(xmlTextReaderPtr reader) {
 		    reader->mode = XML_TEXTREADER_MODE_EOF;
 		    reader->state = oldstate;
 		    return(val);
-		} else if (val == 0) {
-		    /* mark the end of the stream and process the remains */
-		    reader->mode = XML_TEXTREADER_MODE_EOF;
-		    break;
 		}
 
 	    } else
@@ -772,6 +767,7 @@ xmlTextReaderPushData(xmlTextReaderPtr reader) {
 	    break;
 	}
     }
+    reader->state = oldstate;
 
     /*
      * Discard the consumed input when needed and possible
@@ -808,7 +804,6 @@ xmlTextReaderPushData(xmlTextReaderPtr reader) {
 	    }
 	}
     }
-    reader->state = oldstate;
     if (reader->ctxt->wellFormed == 0) {
 	reader->mode = XML_TEXTREADER_MODE_EOF;
         return(-1);