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Fix crash for glyphs with height > 128 

In fe97ecf408 we added support for
arbitrarily sized glyphs, since there is no guarantee that a glyph
will fit inside the em square. There was, however, a hardcoded max
size in the distance field generator, so for very tall glyphs we
could potentially get a crash.

[ChangeLog][QtGui][Text] Fixed crash for very tall glyphs

Task-number: QTBUG-57241
Change-Id: Id95c0f10d82a1294f7e7a51ac32e88a5a2e0a790
Reviewed-by: Yoann Lopes <yoann.lopes@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
bb10
Eskil Abrahamsen Blomfeldt 2017-03-01 13:29:50 +01:00
parent 1a5deb7e0e
commit 6965b8a592
1 changed files with 2 additions and 2 deletions
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4
src/gui/text/qdistancefield.cpp
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@ -436,8 +436,8 @@ static void drawPolygons(qint32 *bits, int width, int height, const QPoint *vert
const quint32 *indices, int indexCount, qint32 value)
{
Q_ASSERT(indexCount != 0);
Q_ASSERT(height <= 128);
QVarLengthArray<quint8, 16> scans[128];
typedef QVarLengthArray<quint8, 16> ScanLine;
QVarLengthArray<ScanLine, 128> scans(height);
int first = 0;
for (int i = 1; i < indexCount; ++i) {
quint32 idx1 = indices[i - 1];