diff options
-rw-r--r-- | src/widgets/widgets/qplaintextedit.cpp | 3 | ||||
-rw-r--r-- | tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp | 33 |
2 files changed, 34 insertions, 2 deletions
diff --git a/src/widgets/widgets/qplaintextedit.cpp b/src/widgets/widgets/qplaintextedit.cpp index 72a556db7c..e56fd111e5 100644 --- a/src/widgets/widgets/qplaintextedit.cpp +++ b/src/widgets/widgets/qplaintextedit.cpp @@ -288,8 +288,7 @@ void QPlainTextDocumentLayout::documentChanged(int from, int charsRemoved, int c if (changeStartBlock == changeEndBlock && newBlockCount == d->blockCount) { QTextBlock block = changeStartBlock; - int blockLineCount = block.layout()->lineCount(); - if (block.isValid() && blockLineCount) { + if (block.isValid() && block.length()) { QRectF oldBr = blockBoundingRect(block); layoutBlock(block); QRectF newBr = blockBoundingRect(block); diff --git a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp index d8e7fb7a99..cf495e2238 100644 --- a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp +++ b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp @@ -148,6 +148,7 @@ private slots: #endif void layoutAfterMultiLineRemove(); void undoCommandRemovesAndReinsertsBlock(); + void taskQTBUG_43562_lineCountCrash(); private: void createSelection(); @@ -1629,5 +1630,37 @@ void tst_QPlainTextEdit::undoCommandRemovesAndReinsertsBlock() } +class ContentsChangedFunctor { +public: + ContentsChangedFunctor(QPlainTextEdit *t) : textEdit(t) {} + void operator()(int, int, int) + { + QTextCursor c(textEdit->textCursor()); + c.beginEditBlock(); + c.movePosition(QTextCursor::Start); + c.movePosition(QTextCursor::End, QTextCursor::KeepAnchor); + c.setCharFormat(QTextCharFormat()); + c.endEditBlock(); + } + +private: + QPlainTextEdit *textEdit; +}; + +void tst_QPlainTextEdit::taskQTBUG_43562_lineCountCrash() +{ + connect(ed->document(), &QTextDocument::contentsChange, ContentsChangedFunctor(ed)); + // Don't crash + QTest::keyClicks(ed, "Some text"); + QTest::keyClick(ed, Qt::Key_Left); + QTest::keyClick(ed, Qt::Key_Right); + QTest::keyClick(ed, Qt::Key_A); + QTest::keyClick(ed, Qt::Key_Left); + QTest::keyClick(ed, Qt::Key_Right); + QTest::keyClick(ed, Qt::Key_Space); + QTest::keyClicks(ed, "nd some more"); + disconnect(ed->document(), SIGNAL(contentsChange(int, int, int)), 0, 0); +} + QTEST_MAIN(tst_QPlainTextEdit) #include "tst_qplaintextedit.moc" |