From 90ad722fb294b9c8bc7bb83d507b9b47d4d09367 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Sat, 9 May 2020 16:53:27 +0200
Subject: [PATCH] QXmlStreamReader: fix a qint64 -> int truncation

QIODevice::read() returns qint64, not int, and nbytesread is qint64,
too.

Pick-to: 5.15
Change-Id: I6d41c5c656336a95bb115b461282e9f247493c25
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
---
 src/corelib/serialization/qxmlstream.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/corelib/serialization/qxmlstream.cpp b/src/corelib/serialization/qxmlstream.cpp
index bbec9047955..8130cc0b5ca 100644
--- a/src/corelib/serialization/qxmlstream.cpp
+++ b/src/corelib/serialization/qxmlstream.cpp
@@ -1490,8 +1490,8 @@ uint QXmlStreamReaderPrivate::getChar_helper()
         nbytesread = 0;
     if (device) {
         rawReadBuffer.resize(BUFFER_SIZE);
-        int nbytesreadOrMinus1 = device->read(rawReadBuffer.data() + nbytesread, BUFFER_SIZE - nbytesread);
-        nbytesread += qMax(nbytesreadOrMinus1, 0);
+        qint64 nbytesreadOrMinus1 = device->read(rawReadBuffer.data() + nbytesread, BUFFER_SIZE - nbytesread);
+        nbytesread += qMax(nbytesreadOrMinus1, qint64{0});
     } else {
         if (nbytesread)
             rawReadBuffer += dataBuffer;