3 files changed, 38 insertions, 3 deletions
diff --git a/tests/auto/corelib/io/qioring/tst_qioring.cpp b/tests/auto/corelib/io/qioring/tst_qioring.cpp
index 75d4fe68c55..5d5662cd9b4 100644
--- a/tests/auto/corelib/io/qioring/tst_qioring.cpp
+++ b/tests/auto/corelib/io/qioring/tst_qioring.cpp
@@ -20,6 +20,7 @@ class tst_QIORing : public QObject
     Q_OBJECT
 
 private slots:
+    void initTestCase();
     void construct();
     void sharedInstance();
     void open();
@@ -33,6 +34,12 @@ private:
     static qintptr openHelper(QIORing *ring, const QString &path, QIODevice::OpenMode flags);
 };
 
+void tst_QIORing::initTestCase()
+{
+    if (QIORing::sharedInstance() == nullptr)
+        QSKIP("QIORing wasn't able to initialize on this platform. Test will be skipped.");
+}
+
 void tst_QIORing::closeFile(qintptr fd)
 {
 #ifdef Q_OS_WIN
diff --git a/tests/auto/widgets/dialogs/qwizard/tst_qwizard.cpp b/tests/auto/widgets/dialogs/qwizard/tst_qwizard.cpp
index 560c725fd3f..2c14a408804 100644
--- a/tests/auto/widgets/dialogs/qwizard/tst_qwizard.cpp
+++ b/tests/auto/widgets/dialogs/qwizard/tst_qwizard.cpp
@@ -449,12 +449,12 @@ void tst_QWizard::setPixmap()
     int newWidth = 1240;
     wizard.resize(newWidth, 720);
     QCOMPARE(wizard.width(), oldWidth);
-    wizard.setBannerSizePolicy(QWizard::BannerSizePolicy::Stretch);
+    wizard.setBannerStretchPolicy(QWizard::BannerStretchPolicy::Stretch);
     wizard.resize(newWidth, 720);
     QCOMPARE(wizard.width(), newWidth);
-    wizard.setBannerSizePolicy(QWizard::BannerSizePolicy::NoStretch);
+    wizard.setBannerStretchPolicy(QWizard::BannerStretchPolicy::NoStretch);
     QCOMPARE(wizard.width(), oldWidth);
-    wizard.setBannerSizePolicy(QWizard::BannerSizePolicy::Stretch);
+    wizard.setBannerStretchPolicy(QWizard::BannerStretchPolicy::Stretch);
     wizard.resize(newWidth, 720);
     QCOMPARE(wizard.width(), newWidth);
 }
diff --git a/tests/auto/widgets/widgets/qlcdnumber/tst_qlcdnumber.cpp b/tests/auto/widgets/widgets/qlcdnumber/tst_qlcdnumber.cpp
index 8fcf9c49fe6..88e67b34a2d 100644
--- a/tests/auto/widgets/widgets/qlcdnumber/tst_qlcdnumber.cpp
+++ b/tests/auto/widgets/widgets/qlcdnumber/tst_qlcdnumber.cpp
@@ -18,6 +18,9 @@ public:
 
 private slots:
     void getSetCheck();
+
+    void displayEdgeCases_data();
+    void displayEdgeCases();
 };
 
 tst_QLCDNumber::tst_QLCDNumber()
@@ -42,5 +45,30 @@ void tst_QLCDNumber::getSetCheck()
     QCOMPARE(99, obj1.digitCount()); // Range<0, 99>
 }
 
+// Test case for undefined behavior when displaying INT_MIN
+void tst_QLCDNumber::displayEdgeCases_data()
+{
+    QTest::addColumn<int>("number");
+    QTest::addColumn<QString>("expected");
+
+    // INT_MIN previously caused UB due to -INT_MIN overflow in int2string().
+    QTest::newRow("INT_MIN") << INT_MIN << QString::number(INT_MIN);
+    QTest::newRow("INT_MAX") << INT_MAX << QString::number(INT_MAX);
+    QTest::newRow("Zero")    << 0       << QStringLiteral("0");
+}
+
+void tst_QLCDNumber::displayEdgeCases()
+{
+    QFETCH(int, number);
+    QFETCH(QString, expected);
+
+    QLCDNumber lcd;
+    lcd.setDigitCount(12);
+    lcd.display(number);
+
+    QString result = QString::number(lcd.intValue());
+    QCOMPARE(result, expected);
+}
+
 QTEST_MAIN(tst_QLCDNumber)
 #include "tst_qlcdnumber.moc"