1 files changed, 14 insertions, 13 deletions
diff --git a/src/tools/uic/uic.cpp b/src/tools/uic/uic.cpp
index 9c61ae4778..fb0a37d21d 100644
--- a/src/tools/uic/uic.cpp
+++ b/src/tools/uic/uic.cpp
@@ -38,9 +38,10 @@ bool Uic::printDependencies()
     QString fileName = opt.inputFile;
 
     QFile f;
-    if (fileName.isEmpty())
-        f.open(stdin, QIODevice::ReadOnly);
-    else {
+    if (fileName.isEmpty()) {
+        if (!f.open(stdin, QIODevice::ReadOnly))
+            return false;
+    } else {
         f.setFileName(fileName);
         if (!f.open(QIODevice::ReadOnly))
             return false;
@@ -146,7 +147,7 @@ void Uic::writeCopyrightHeaderPython(const DomUI *ui) const
 static double versionFromUiAttribute(QXmlStreamReader &reader)
 {
     const QXmlStreamAttributes attributes = reader.attributes();
-    const QString versionAttribute = "version"_L1;
+    const auto versionAttribute = "version"_L1;
     if (!attributes.hasAttribute(versionAttribute))
         return 4.0;
     const QStringView version = attributes.value(versionAttribute);
@@ -157,7 +158,7 @@ DomUI *Uic::parseUiFile(QXmlStreamReader &reader)
 {
     DomUI *ui = nullptr;
 
-    const QString uiElement = "ui"_L1;
+    const auto uiElement = "ui"_L1;
     while (!reader.atEnd()) {
         if (reader.readNext() == QXmlStreamReader::StartElement) {
             if (reader.name().compare(uiElement, Qt::CaseInsensitive) == 0
@@ -291,9 +292,9 @@ void Uic::writeHeaderProtectionEnd()
 bool Uic::isButton(const QString &className) const
 {
     static const QStringList buttons = {
-        "QRadioButton"_L1, "QToolButton"_L1,
-        "QCheckBox"_L1, "QPushButton"_L1,
-        "QCommandLinkButton"_L1
+        u"QRadioButton"_s, u"QToolButton"_s,
+        u"QCheckBox"_s, u"QPushButton"_s,
+        u"QCommandLinkButton"_s
     };
     return customWidgetsInfo()->extendsOneOf(className, buttons);
 }
@@ -301,10 +302,10 @@ bool Uic::isButton(const QString &className) const
 bool Uic::isContainer(const QString &className) const
 {
     static const QStringList containers = {
-        "QStackedWidget"_L1, "QToolBox"_L1,
-        "QTabWidget"_L1, "QScrollArea"_L1,
-        "QMdiArea"_L1, "QWizard"_L1,
-        "QDockWidget"_L1
+        u"QStackedWidget"_s, u"QToolBox"_s,
+        u"QTabWidget"_s, u"QScrollArea"_s,
+        u"QMdiArea"_s, u"QWizard"_s,
+        u"QDockWidget"_s
     };
 
     return customWidgetsInfo()->extendsOneOf(className, containers);
@@ -313,7 +314,7 @@ bool Uic::isContainer(const QString &className) const
 bool Uic::isMenu(const QString &className) const
 {
     static const QStringList menus = {
-        "QMenu"_L1, "QPopupMenu"_L1
+        u"QMenu"_s, u"QPopupMenu"_s
     };
     return customWidgetsInfo()->extendsOneOf(className, menus);
 }