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| author | Eirik Aavitsland <eirik.aavitsland@qt.io> | 2021-06-08 16:49:53 +0200 |
|---|---|---|
| committer | Eirik Aavitsland <eirik.aavitsland@qt.io> | 2021-06-17 09:58:27 +0000 |
| commit | e473d96e65e7cf3190c6c16acace6359964d0bee (patch) | |
| tree | 4b374ac6f9a2537af847c881c7f5e870ed988efb /tests/auto/gui | |
| parent | 68b855c215865a865672e2a43a70b2033e97a0f3 (diff) | |
Avoid overflow in text layout
Fixes oss-fuzz issue 34597.
Fixes: QTBUG-94197
Pick-to: 6.2 6.1 5.15
Change-Id: Icabcd5a87b809b6a5ae0f1a696ec3b5dd906886b
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Diffstat (limited to 'tests/auto/gui')
| -rw-r--r-- | tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp index 099ccab51c..4b8ba98d04 100644 --- a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp +++ b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp @@ -1910,6 +1910,20 @@ void tst_QTextLayout::longText() QFontMetricsF fm(layout.font()); QVERIFY(layout.maximumWidth() - fm.horizontalAdvance(' ') <= QFIXED_MAX); } + + { + QTextLayout layout(QString("AAAAAAAA").repeated(200000)); + layout.setCacheEnabled(true); + layout.beginLayout(); + forever { + QTextLine line = layout.createLine(); + if (!line.isValid()) + break; + } + layout.endLayout(); + QFontMetricsF fm(layout.font()); + QVERIFY(layout.maximumWidth() - fm.horizontalAdvance('A') <= QFIXED_MAX); + } } void tst_QTextLayout::widthOfTabs() |