From 5392259ce6df9b9852a8580831cff4139fe2677c Mon Sep 17 00:00:00 2001
From: Anton Kudryavtsev <a.kudryavtsev@netris.ru>
Date: Mon, 27 Jun 2016 16:40:57 +0300
Subject: QXml: reduce allocations in extractEncodingDecl

Replace QString::left() with QString::leftRef().
Use QStringLiteral more.

Change-Id: Ibcecc666d034a5e1fe963119483030ab397b16b1
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
---
 src/xml/sax/qxml.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/xml/sax/qxml.cpp b/src/xml/sax/qxml.cpp
index d4c8519d67..fe21bca810 100644
--- a/src/xml/sax/qxml.cpp
+++ b/src/xml/sax/qxml.cpp
@@ -1295,7 +1295,8 @@ static QString extractEncodingDecl(const QString &text, bool *needMoreText)
     *needMoreText = false;
 
     int l = text.length();
-    QString snip = QString::fromLatin1("<?xml").left(l);
+    const QString declStart = QStringLiteral("<?xml");
+    const QStringRef snip = declStart.leftRef(l);
     if (l > 0 && !text.startsWith(snip))
         return QString();
 
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