From dbd21d087954bef315f8ec60535aa81b94680c22 Mon Sep 17 00:00:00 2001
From: Robin Burchell <robin.burchell@viroteck.net>
Date: Fri, 13 Feb 2015 22:25:45 +0100
Subject: QTextLayout: Reserve space ahead of time.

We know the size, so use it instead of allowing QVector to reallocate.

Change-Id: I2d18c30ef0d050326bb03c54da61459c40eb7af6
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
---
 src/gui/text/qtextlayout.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index 2a8d4605b0..cab9f6ae61 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -2091,7 +2091,9 @@ static QGlyphRun glyphRunWithInfo(QFontEngine *fontEngine,
     qreal minY = 0;
     qreal maxY = 0;
     QVector<quint32> glyphs;
+    glyphs.reserve(glyphsArray.size());
     QVector<QPointF> positions;
+    positions.reserve(glyphsArray.size());
     for (int i=0; i<glyphsArray.size(); ++i) {
         glyphs.append(glyphsArray.at(i) & 0xffffff);
 
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