5 files changed, 12 insertions, 9 deletions
diff --git a/src/qml/jsapi/qjsengine.cpp b/src/qml/jsapi/qjsengine.cpp
index 29ca243649..6aeeacbb02 100644
--- a/src/qml/jsapi/qjsengine.cpp
+++ b/src/qml/jsapi/qjsengine.cpp
@@ -533,7 +533,7 @@ QJSValue QJSEngine::evaluate(const QString& program, const QString& fileName, in
         result = v4->catchException(&trace);
         if (exceptionStackTrace) {
             for (auto &&frame: trace)
-                exceptionStackTrace->push_back(QString::fromLatin1("%1:%2:%3:%4").arg(
+                exceptionStackTrace->push_back(QLatin1StringView("%1:%2:%3:%4").arg(
                                           frame.function,
                                           QString::number(qAbs(frame.line)),
                                           QString::number(frame.column),
diff --git a/src/qml/jsruntime/qv4object.cpp b/src/qml/jsruntime/qv4object.cpp
index 19058195bc..f96b8f724b 100644
--- a/src/qml/jsruntime/qv4object.cpp
+++ b/src/qml/jsruntime/qv4object.cpp
@@ -20,6 +20,7 @@
 #include <stdint.h>
 
 using namespace QV4;
+using namespace Qt::Literals::StringLiterals;
 
 Q_LOGGING_CATEGORY(lcJavaScriptGlobals, "qt.qml.js.globals")
 
@@ -179,16 +180,16 @@ void Object::defineAccessorProperty(StringOrSymbol *name, VTable::Call getter, V
     QV4::Scope scope(v4);
     ScopedProperty p(scope);
     QString n = name->toQString();
-    if (!n.isEmpty() && n.at(0) == QLatin1Char('@'))
-        n = QChar::fromLatin1('[') + QStringView{n}.mid(1) + QChar::fromLatin1(']');
+    if (!n.isEmpty() && n.at(0) == '@'_L1)
+        n = '['_L1 + QStringView{n}.mid(1) + ']'_L1;
     if (getter) {
-        ScopedString getName(scope, v4->newString(QString::fromLatin1("get ") + n));
+        ScopedString getName(scope, v4->newString("get "_L1 + n));
         p->setGetter(ScopedFunctionObject(scope, FunctionObject::createBuiltinFunction(v4, getName, getter, 0)));
     } else {
         p->setGetter(nullptr);
     }
     if (setter) {
-        ScopedString setName(scope, v4->newString(QString::fromLatin1("set ") + n));
+        ScopedString setName(scope, v4->newString("set "_L1 + n));
         p->setSetter(ScopedFunctionObject(scope, FunctionObject::createBuiltinFunction(v4, setName, setter, 0)));
     } else {
         p->setSetter(nullptr);
diff --git a/src/qml/jsruntime/qv4setobject.cpp b/src/qml/jsruntime/qv4setobject.cpp
index 01fc62a4d4..a7589a40db 100644
--- a/src/qml/jsruntime/qv4setobject.cpp
+++ b/src/qml/jsruntime/qv4setobject.cpp
@@ -8,6 +8,7 @@
 #include "qv4symbol_p.h"
 
 using namespace QV4;
+using namespace Qt::Literals::StringLiterals;
 
 DEFINE_OBJECT_VTABLE(SetCtor);
 DEFINE_OBJECT_VTABLE(WeakSetCtor);
@@ -37,7 +38,7 @@ ReturnedValue WeakSetCtor::construct(const FunctionObject *f, const Value *argv,
     if (argc > 0) {
         ScopedValue iterable(scope, argv[0]);
         if (!iterable->isUndefined() && !iterable->isNull()) {
-            ScopedFunctionObject adder(scope, a->get(ScopedString(scope, scope.engine->newString(QString::fromLatin1("add")))));
+            ScopedFunctionObject adder(scope, a->get(ScopedString(scope, scope.engine->newString(u"add"_s))));
             if (!adder)
                 return scope.engine->throwTypeError();
             ScopedObject iter(scope, Runtime::GetIterator::call(scope.engine, iterable, true));
diff --git a/src/qml/jsruntime/qv4stringobject.cpp b/src/qml/jsruntime/qv4stringobject.cpp
index 98bb6347d3..ad3c39c7b9 100644
--- a/src/qml/jsruntime/qv4stringobject.cpp
+++ b/src/qml/jsruntime/qv4stringobject.cpp
@@ -30,6 +30,7 @@
 #endif
 
 using namespace QV4;
+using namespace Qt::Literals::StringLiterals;
 
 DEFINE_OBJECT_VTABLE(StringObject);
 
@@ -599,7 +600,7 @@ ReturnedValue StringPrototype::method_padEnd(const FunctionObject *f, const Valu
     double maxLen = argv[0].toInteger();
     if (maxLen <= s->d()->length())
         return s->asReturnedValue();
-    QString fillString = (argc > 1 && !argv[1].isUndefined()) ? argv[1].toQString() : QString::fromLatin1(" ");
+    QString fillString = (argc > 1 && !argv[1].isUndefined()) ? argv[1].toQString() : u" "_s;
     if (v4->hasException)
         return Encode::undefined();
 
@@ -638,7 +639,7 @@ ReturnedValue StringPrototype::method_padStart(const FunctionObject *f, const Va
     double maxLen = argv[0].toInteger();
     if (maxLen <= s->d()->length())
         return s->asReturnedValue();
-    QString fillString = (argc > 1 && !argv[1].isUndefined()) ? argv[1].toQString() : QString::fromLatin1(" ");
+    QString fillString = (argc > 1 && !argv[1].isUndefined()) ? argv[1].toQString() : u" "_s;
     if (v4->hasException)
         return Encode::undefined();
 
diff --git a/src/qml/qml/qqmlpropertyvalidator.cpp b/src/qml/qml/qqmlpropertyvalidator.cpp
index 23f7516ee4..f4f2c0d433 100644
--- a/src/qml/qml/qqmlpropertyvalidator.cpp
+++ b/src/qml/qml/qqmlpropertyvalidator.cpp
@@ -610,7 +610,7 @@ QQmlError QQmlPropertyValidator::validateLiteralBinding(
             break;
         }
 
-        return warnOrError(tr("Invalid property assignment: unsupported type \"%1\"").arg(QString::fromLatin1(property->propType().name())));
+        return warnOrError(tr("Invalid property assignment: unsupported type \"%1\"").arg(QLatin1StringView(property->propType().name())));
     }
     break;
     }