QtCore: Replace remaining uses of QLatin1String with QLatin1StringView

Task-number: QTBUG-98434 Change-Id: Ib7c5fc0aaca6ef33b93c7486e99502c555bf20bc Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Marc Mutz <marc.mutz@qt.io>
author: Sona Kurazyan <sona.kurazyan@qt.io> 2022-03-09 21:26:01 +0100
committer: Sona Kurazyan <sona.kurazyan@qt.io> 2022-03-26 01:44:05 +0100
commit: b6251958932be5966258f362dc9bb7c7475d2d0a (patch)
tree: 2b2dc46c0d097fca15bcc9e2701682919921c339 /src/corelib
parent: 73a03a0c298461aa15d7c2757bc0b6444e5dc3dc (diff)
94 files changed, 419 insertions, 405 deletions
diff --git a/src/corelib/compat/removed_api.cpp b/src/corelib/compat/removed_api.cpp
index 51482d1e60..29e1ed85f4 100644
--- a/src/corelib/compat/removed_api.cpp
+++ b/src/corelib/compat/removed_api.cpp
@@ -142,7 +142,7 @@ QUuid QUuid::fromString(QStringView string) noexcept
     return fromString(QAnyStringView{string});
 }
 
-QUuid QUuid::fromString(QLatin1String string) noexcept
+QUuid QUuid::fromString(QLatin1StringView string) noexcept
 {
     return fromString(QAnyStringView{string});
 }
@@ -202,7 +202,7 @@ QByteArray QUrl::toAce(const QString &domain)
 QCalendar::QCalendar(QStringView name)
     : QCalendar(QAnyStringView{name}) {}
 
-QCalendar::QCalendar(QLatin1String name)
+QCalendar::QCalendar(QLatin1StringView name)
     : QCalendar(QAnyStringView{name}) {}
 
 
@@ -272,7 +272,7 @@ QVersionNumber QVersionNumber::fromString(QStringView string, int *suffixIndex)
     return fromString(QAnyStringView{string}, suffixIndex);
 }
 
-QVersionNumber QVersionNumber::fromString(QLatin1String string, int *suffixIndex)
+QVersionNumber QVersionNumber::fromString(QLatin1StringView string, int *suffixIndex)
 {
     return fromString(QAnyStringView{string}, suffixIndex);
 }
diff --git a/src/corelib/doc/snippets/qstring/stringbuilder.cpp b/src/corelib/doc/snippets/qstring/stringbuilder.cpp
index 10a3fe1945..fa77166251 100644
--- a/src/corelib/doc/snippets/qstring/stringbuilder.cpp
+++ b/src/corelib/doc/snippets/qstring/stringbuilder.cpp
@@ -69,6 +69,6 @@ using namespace Qt::StringLiterals;
 
     QString hello("hello");
     QStringView el = QStringView{ hello }.mid(2, 3);
-    QLatin1String world("world");
+    QLatin1StringView world("world");
     QString message =  hello % el % world % QChar('!');
 //! [5]
diff --git a/src/corelib/doc/snippets/qversionnumber/main.cpp b/src/corelib/doc/snippets/qversionnumber/main.cpp
index 1a520a1cef..cad6a6dec9 100644
--- a/src/corelib/doc/snippets/qversionnumber/main.cpp
+++ b/src/corelib/doc/snippets/qversionnumber/main.cpp
@@ -97,7 +97,7 @@ void QObject::parse()
     //! [3]
 
     //! [3-latin1-1]
-    QLatin1String string("5.4.0-alpha");
+    QLatin1StringView string("5.4.0-alpha");
     qsizetype suffixIndex;
     auto version = QVersionNumber::fromString(string, &suffixIndex);
     // version is 5.4.0
diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp
index 3ae14b6e13..067172efa4 100644
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -2617,9 +2617,9 @@ QString QSysInfo::currentCpuArchitecture()
 #  if defined(Q_PROCESSOR_POWER) || defined(QT_BUILD_INTERNAL)
         // harmonize "powerpc" and "ppc" to "power"
         if (strncmp(u.machine, "ppc", 3) == 0)
-            return "power"_L1 + QLatin1String(u.machine + 3);
+            return "power"_L1 + QLatin1StringView(u.machine + 3);
         if (strncmp(u.machine, "powerpc", 7) == 0)
-            return "power"_L1 + QLatin1String(u.machine + 7);
+            return "power"_L1 + QLatin1StringView(u.machine + 7);
         if (strcmp(u.machine, "Power Macintosh") == 0)
             return "power"_L1;
 #  endif
@@ -2907,7 +2907,7 @@ QString QSysInfo::prettyProductName()
     const char *name = osVer_helper(version);
     if (!name)
         return result + versionString;
-    result += QLatin1String(name);
+    result += QLatin1StringView(name);
 #  if !defined(Q_OS_WIN)
     return result + " ("_L1 + versionString + u')';
 #  else
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index ab0f4a1ecf..e69e55977b 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -626,7 +626,8 @@ using qsizetype = QIntegerForSizeof<std::size_t>::Signed;
 #endif
 
 #ifdef QT_ASCII_CAST_WARNINGS
-#  define QT_ASCII_CAST_WARN Q_DECL_DEPRECATED_X("Use fromUtf8, QStringLiteral, or QLatin1String")
+#  define QT_ASCII_CAST_WARN \
+    Q_DECL_DEPRECATED_X("Use fromUtf8, QStringLiteral, or QLatin1StringView")
 #else
 #  define QT_ASCII_CAST_WARN
 #endif
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index 1a540d40f7..8e9da7a2a5 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -148,7 +148,7 @@ static QSettings *findConfiguration()
 #endif
     if (QCoreApplication::instance()) {
         QDir pwd(QCoreApplication::applicationDirPath());
-        qtconfig = pwd.filePath(QLatin1String("qt" QT_STRINGIFY(QT_VERSION_MAJOR) ".conf"));
+        qtconfig = pwd.filePath(u"qt" QT_STRINGIFY(QT_VERSION_MAJOR) ".conf"_qs);
         if (QFile::exists(qtconfig))
             return new QSettings(qtconfig, QSettings::IniFormat);
         qtconfig = pwd.filePath("qt.conf"_L1);
@@ -529,14 +529,14 @@ QLibraryInfoPrivate::LocationInfo QLibraryInfoPrivate::locationInfo(QLibraryInfo
     LocationInfo result;
 
     if (int(loc) < qtConfEntries.count()) {
-        result.key = QLatin1String(qtConfEntries.viewAt(loc * 2));
-        result.defaultValue = QLatin1String(qtConfEntries.viewAt(loc * 2 + 1));
+        result.key = QLatin1StringView(qtConfEntries.viewAt(loc * 2));
+        result.defaultValue = QLatin1StringView(qtConfEntries.viewAt(loc * 2 + 1));
         if (result.key == u"QmlImports")
             result.fallbackKey = u"Qml2Imports"_qs;
 #ifndef Q_OS_WIN // On Windows we use the registry
     } else if (loc == QLibraryInfo::SettingsPath) {
         result.key = "Settings"_L1;
-        result.defaultValue = QLatin1String(dot);
+        result.defaultValue = QLatin1StringView(dot);
 #endif
     }
 
diff --git a/src/corelib/global/qlogging.cpp b/src/corelib/global/qlogging.cpp
index 71332ea6cf..254894961e 100644
--- a/src/corelib/global/qlogging.cpp
+++ b/src/corelib/global/qlogging.cpp
@@ -1105,7 +1105,7 @@ QMessagePattern::QMessagePattern()
 #endif
     const QString envPattern = QString::fromLocal8Bit(qgetenv("QT_MESSAGE_PATTERN"));
     if (envPattern.isEmpty()) {
-        setPattern(QLatin1String(defaultPattern));
+        setPattern(QLatin1StringView(defaultPattern));
         fromEnvironment = false;
     } else {
         setPattern(envPattern);
@@ -1165,34 +1165,34 @@ void QMessagePattern::setPattern(const QString &pattern)
         const QString lexeme = lexemes.at(i);
         if (lexeme.startsWith("%{"_L1) && lexeme.endsWith(u'}')) {
             // placeholder
-            if (lexeme == QLatin1String(typeTokenC)) {
+            if (lexeme == QLatin1StringView(typeTokenC)) {
                 tokens[i] = typeTokenC;
-            } else if (lexeme == QLatin1String(categoryTokenC))
+            } else if (lexeme == QLatin1StringView(categoryTokenC))
                 tokens[i] = categoryTokenC;
-            else if (lexeme == QLatin1String(messageTokenC))
+            else if (lexeme == QLatin1StringView(messageTokenC))
                 tokens[i] = messageTokenC;
-            else if (lexeme == QLatin1String(fileTokenC))
+            else if (lexeme == QLatin1StringView(fileTokenC))
                 tokens[i] = fileTokenC;
-            else if (lexeme == QLatin1String(lineTokenC))
+            else if (lexeme == QLatin1StringView(lineTokenC))
                 tokens[i] = lineTokenC;
-            else if (lexeme == QLatin1String(functionTokenC))
+            else if (lexeme == QLatin1StringView(functionTokenC))
                 tokens[i] = functionTokenC;
-            else if (lexeme == QLatin1String(pidTokenC))
+            else if (lexeme == QLatin1StringView(pidTokenC))
                 tokens[i] = pidTokenC;
-            else if (lexeme == QLatin1String(appnameTokenC))
+            else if (lexeme == QLatin1StringView(appnameTokenC))
                 tokens[i] = appnameTokenC;
-            else if (lexeme == QLatin1String(threadidTokenC))
+            else if (lexeme == QLatin1StringView(threadidTokenC))
                 tokens[i] = threadidTokenC;
-            else if (lexeme == QLatin1String(qthreadptrTokenC))
+            else if (lexeme == QLatin1StringView(qthreadptrTokenC))
                 tokens[i] = qthreadptrTokenC;
-            else if (lexeme.startsWith(QLatin1String(timeTokenC))) {
+            else if (lexeme.startsWith(QLatin1StringView(timeTokenC))) {
                 tokens[i] = timeTokenC;
                 int spaceIdx = lexeme.indexOf(QChar::fromLatin1(' '));
                 if (spaceIdx > 0)
                     timeArgs.append(lexeme.mid(spaceIdx + 1, lexeme.length() - spaceIdx - 2));
                 else
                     timeArgs.append(QString());
-            } else if (lexeme.startsWith(QLatin1String(backtraceTokenC))) {
+            } else if (lexeme.startsWith(QLatin1StringView(backtraceTokenC))) {
 #ifdef QLOGGING_HAVE_BACKTRACE
                 tokens[i] = backtraceTokenC;
                 QString backtraceSeparator = QStringLiteral("|");
@@ -1221,7 +1221,7 @@ void QMessagePattern::setPattern(const QString &pattern)
             }
 
 #define IF_TOKEN(LEVEL) \
-            else if (lexeme == QLatin1String(LEVEL)) { \
+            else if (lexeme == QLatin1StringView(LEVEL)) { \
                 if (inIf) \
                     nestedIfError = true; \
                 tokens[i] = LEVEL; \
@@ -1234,7 +1234,7 @@ void QMessagePattern::setPattern(const QString &pattern)
             IF_TOKEN(ifCriticalTokenC)
             IF_TOKEN(ifFatalTokenC)
 #undef IF_TOKEN
-            else if (lexeme == QLatin1String(endifTokenC)) {
+            else if (lexeme == QLatin1StringView(endifTokenC)) {
                 tokens[i] = endifTokenC;
                 if (!inIf && !nestedIfError)
                     error += "QT_MESSAGE_PATTERN: %{endif} without an %{if-*}\n"_L1;
@@ -1344,12 +1344,12 @@ static QStringList backtraceFramesForLogMessage(int frameCount)
             return {};
 
         // These are actually UTF-8, so we'll correct below
-        QLatin1String fn(info.dli_sname);
-        QLatin1String lib;
+        QLatin1StringView fn(info.dli_sname);
+        QLatin1StringView lib;
         if (const char *lastSlash = strrchr(info.dli_fname, '/'))
-            lib = QLatin1String(lastSlash + 1);
+            lib = QLatin1StringView(lastSlash + 1);
         else
-            lib = QLatin1String(info.dli_fname);
+            lib = QLatin1StringView(info.dli_fname);
 
         if (shouldSkipFrame(lib, fn))
             return {};
@@ -1488,7 +1488,7 @@ QString qFormatLogMessage(QtMsgType type, const QMessageLogContext &context, con
         } else if (token == categoryTokenC) {
 #ifndef Q_OS_ANDROID
             // Don't add the category to the message on Android
-            message.append(QLatin1String(context.category));
+            message.append(QLatin1StringView(context.category));
 #endif
         } else if (token == typeTokenC) {
             switch (type) {
@@ -1500,7 +1500,7 @@ QString qFormatLogMessage(QtMsgType type, const QMessageLogContext &context, con
             }
         } else if (token == fileTokenC) {
             if (context.file)
-                message.append(QLatin1String(context.file));
+                message.append(QLatin1StringView(context.file));
             else
                 message.append("unknown"_L1);
         } else if (token == lineTokenC) {
@@ -1559,7 +1559,7 @@ QString qFormatLogMessage(QtMsgType type, const QMessageLogContext &context, con
         HANDLE_IF_TOKEN(Fatal)
 #undef HANDLE_IF_TOKEN
         } else {
-            message.append(QLatin1String(token));
+            message.append(QLatin1StringView(token));
         }
     }
     return message;
diff --git a/src/corelib/io/qdataurl.cpp b/src/corelib/io/qdataurl.cpp
index f58c04cef2..16d1fdb6a8 100644
--- a/src/corelib/io/qdataurl.cpp
+++ b/src/corelib/io/qdataurl.cpp
@@ -72,12 +72,12 @@ Q_CORE_EXPORT bool qDecodeDataUrl(const QUrl &uri, QString &mimeType, QByteArray
         data = data.trimmed();
 
         // find out if the payload is encoded in Base64
-        if (QLatin1String{data}.endsWith(";base64"_L1, Qt::CaseInsensitive)) {
+        if (QLatin1StringView{data}.endsWith(";base64"_L1, Qt::CaseInsensitive)) {
             payload = QByteArray::fromBase64(payload);
             data.chop(7);
         }
 
-        if (QLatin1String{data}.startsWith("charset"_L1, Qt::CaseInsensitive)) {
+        if (QLatin1StringView{data}.startsWith("charset"_L1, Qt::CaseInsensitive)) {
             int i = 7;      // strlen("charset")
             while (data.at(i) == ' ')
                 ++i;
diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 525f032368..2d65bd36a5 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -728,7 +728,7 @@ QDebug &QDebug::resetFormat()
 */
 
 /*!
-    \fn QDebug &QDebug::operator<<(QLatin1String t)
+    \fn QDebug &QDebug::operator<<(QLatin1StringView t)
 
     Writes the string, \a t, to the stream and returns a reference to the
     stream. Normally, QDebug prints the string inside quotes and transforms
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 32b3bf793d..5d07a9f290 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -147,7 +147,7 @@ public:
 #endif
     inline QDebug &operator<<(QStringView s) { putString(s.data(), size_t(s.size())); return maybeSpace(); }
     inline QDebug &operator<<(QUtf8StringView s) { putByteArray(reinterpret_cast<const char*>(s.data()), s.size(), ContainsBinary); return maybeSpace(); }
-    inline QDebug &operator<<(QLatin1String t) { putByteArray(t.latin1(), t.size(), ContainsLatin1); return maybeSpace(); }
+    inline QDebug &operator<<(QLatin1StringView t) { putByteArray(t.latin1(), t.size(), ContainsLatin1); return maybeSpace(); }
     inline QDebug &operator<<(const QByteArray & t) { putByteArray(t.constData(), t.size(), ContainsBinary); return maybeSpace(); }
     inline QDebug &operator<<(QByteArrayView t) { putByteArray(t.constData(), t.size(), ContainsBinary); return maybeSpace(); }
     inline QDebug &operator<<(const void * t) { stream->ts << t; return maybeSpace(); }
diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp
index 9b34ab6596..a1207c6263 100644
--- a/src/corelib/io/qfilesystemengine_unix.cpp
+++ b/src/corelib/io/qfilesystemengine_unix.cpp
@@ -1654,7 +1654,7 @@ QString QFileSystemEngine::rootPath()
 QString QFileSystemEngine::tempPath()
 {
 #ifdef QT_UNIX_TEMP_PATH_OVERRIDE
-    return QLatin1String(QT_UNIX_TEMP_PATH_OVERRIDE);
+    return QT_UNIX_TEMP_PATH_OVERRIDE ""_L1;
 #else
     QString temp = QFile::decodeName(qgetenv("TMPDIR"));
     if (temp.isEmpty()) {
@@ -1664,7 +1664,7 @@ QString QFileSystemEngine::tempPath()
             temp = QString::fromCFString((CFStringRef)nsPath);
 #endif
         } else {
-            temp = QLatin1String(_PATH_TMP);
+            temp = _PATH_TMP ""_L1;
         }
     }
     return QDir(QDir::cleanPath(temp)).canonicalPath();
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index 9e4a72edf8..82d9c53e91 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -101,7 +101,7 @@ static inline QString msgOpenDirectory()
 #if QT_CONFIG(translation)
     return QIODevice::tr(message);
 #else
-    return QLatin1String(message);
+    return QLatin1StringView(message);
 #endif
 }
 
diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index fdeed890f4..d7c9369983 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -2173,7 +2173,7 @@ QString QIODevice::errorString() const
     Q_D(const QIODevice);
     if (d->errorString.isEmpty()) {
 #ifdef QT_NO_QOBJECT
-        return QLatin1String(QT_TRANSLATE_NOOP(QIODevice, "Unknown error"));
+        return QLatin1StringView(QT_TRANSLATE_NOOP(QIODevice, "Unknown error"));
 #else
         return tr("Unknown error");
 #endif
diff --git a/src/corelib/io/qloggingregistry.cpp b/src/corelib/io/qloggingregistry.cpp
index a5c6a3cfed..b60401e011 100644
--- a/src/corelib/io/qloggingregistry.cpp
+++ b/src/corelib/io/qloggingregistry.cpp
@@ -89,7 +89,7 @@ QLoggingRule::QLoggingRule(QStringView pattern, bool enabled) :
     Return value 1 means filter passed, 0 means filter doesn't influence this
     category, -1 means category doesn't pass this filter.
  */
-int QLoggingRule::pass(QLatin1String cat, QtMsgType msgType) const
+int QLoggingRule::pass(QLatin1StringView cat, QtMsgType msgType) const
 {
     // check message type
     if (messageType > -1 && messageType != msgType)
@@ -482,7 +482,7 @@ void QLoggingRegistry::defaultCategoryFilter(QLoggingCategory *cat)
         }
     }
 
-    const auto categoryName = QLatin1String(cat->categoryName());
+    const auto categoryName = QLatin1StringView(cat->categoryName());
 
     for (const auto &ruleSet : reg->ruleSets) {
         for (const auto &rule : ruleSet) {
diff --git a/src/corelib/io/qloggingregistry_p.h b/src/corelib/io/qloggingregistry_p.h
index bc3515e894..bb6bb39461 100644
--- a/src/corelib/io/qloggingregistry_p.h
+++ b/src/corelib/io/qloggingregistry_p.h
@@ -79,7 +79,7 @@ class Q_AUTOTEST_EXPORT QLoggingRule
 public:
     QLoggingRule();
     QLoggingRule(QStringView pattern, bool enabled);
-    int pass(QLatin1String categoryName, QtMsgType type) const;
+    int pass(QLatin1StringView categoryName, QtMsgType type) const;
 
     enum PatternFlag {
         FullText = 0x1,
diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index 9973ab76cd..9d1e4694bc 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -627,7 +627,7 @@ bool QProcessPrivate::processStarted(QString *errorMessage)
 
     // did we read an error message?
     if (errorMessage)
-        *errorMessage = QLatin1String(buf.function) + ": "_L1 + qt_error_string(buf.code);
+        *errorMessage = QLatin1StringView(buf.function) + ": "_L1 + qt_error_string(buf.code);
 
     return false;
 }
@@ -1036,7 +1036,7 @@ bool QProcessPrivate::startDetached(qint64 *pid)
             *pid = -1;
         QString msg;
         if (startResult == sizeof(childStatus))
-            msg = QLatin1String(childStatus.function) + qt_error_string(childStatus.code);
+            msg = QLatin1StringView(childStatus.function) + qt_error_string(childStatus.code);
         setErrorAndEmit(QProcess::FailedToStart, msg);
     }
     return success;
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index 24d336aea6..4c28dbca38 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -418,7 +418,7 @@ QString QSettingsPrivate::variantToString(const QVariant &v)
         case QMetaType::QByteArray: {
             QByteArray a = v.toByteArray();
             result = "@ByteArray("_L1
-                     + QLatin1String(a.constData(), a.size())
+                     + QLatin1StringView(a.constData(), a.size())
                      + u')';
             break;
         }
@@ -477,8 +477,8 @@ QString QSettingsPrivate::variantToString(const QVariant &v)
                 s << v;
             }
 
-            result = QLatin1String(typeSpec)
-                     + QLatin1String(a.constData(), a.size())
+            result = QLatin1StringView(typeSpec)
+                     + QLatin1StringView(a.constData(), a.size())
                      + u')';
 #else
             Q_ASSERT(!"QSettings: Cannot save custom types without QDataStream support");
@@ -1656,7 +1656,7 @@ bool QConfFileSettingsPrivate::readIniFile(const QByteArray &data,
                 currentSection.clear();
             } else {
                 if (iniSection.compare("%general", Qt::CaseInsensitive) == 0) {
-                    currentSection = QLatin1String(iniSection.constData() + 1);
+                    currentSection = QLatin1StringView(iniSection.constData() + 1);
                 } else {
                     currentSection.clear();
                     iniUnescapedKey(iniSection, 0, iniSection.size(), currentSection);
diff --git a/src/corelib/io/qstandardpaths_android.cpp b/src/corelib/io/qstandardpaths_android.cpp
index 9deab7754b..a76354e385 100644
--- a/src/corelib/io/qstandardpaths_android.cpp
+++ b/src/corelib/io/qstandardpaths_android.cpp
@@ -75,7 +75,7 @@ static inline QString getAbsolutePath(const QJniObject &file)
  */
 static QString getExternalFilesDir(const char *directoryField = nullptr)
 {
-    QString &path = (*androidDirCache)["APPNAME_%1"_L1.arg(QLatin1String(directoryField))];
+    QString &path = (*androidDirCache)["APPNAME_%1"_L1.arg(QLatin1StringView(directoryField))];
     if (!path.isEmpty())
         return path;
 
diff --git a/src/corelib/io/qstandardpaths_unix.cpp b/src/corelib/io/qstandardpaths_unix.cpp
index 2750feda5d..6344cf773a 100644
--- a/src/corelib/io/qstandardpaths_unix.cpp
+++ b/src/corelib/io/qstandardpaths_unix.cpp
@@ -75,7 +75,7 @@ static void appendOrganizationAndApp(QString &path)
 }
 
 #if QT_CONFIG(regularexpression)
-static QLatin1String xdg_key_name(QStandardPaths::StandardLocation type)
+static QLatin1StringView xdg_key_name(QStandardPaths::StandardLocation type)
 {
     switch (type) {
     case QStandardPaths::DesktopLocation:
@@ -285,7 +285,7 @@ QString QStandardPaths::writableLocation(StandardLocation type)
     if (xdgConfigHome.isEmpty())
         xdgConfigHome = QDir::homePath() + "/.config"_L1;
     QFile file(xdgConfigHome + "/user-dirs.dirs"_L1);
-    const QLatin1String key = xdg_key_name(type);
+    const QLatin1StringView key = xdg_key_name(type);
     if (!key.isEmpty() && !isTestModeEnabled() && file.open(QIODevice::ReadOnly)) {
         QTextStream stream(&file);
         // Only look for lines like: XDG_DESKTOP_DIR="$HOME/Desktop"
diff --git a/src/corelib/io/qstorageinfo_unix.cpp b/src/corelib/io/qstorageinfo_unix.cpp
index 380f3e3f4c..093b5cde20 100644
--- a/src/corelib/io/qstorageinfo_unix.cpp
+++ b/src/corelib/io/qstorageinfo_unix.cpp
@@ -796,7 +796,7 @@ static inline QString retrieveLabel(const QByteArray &device)
     QFileInfo devinfo(QFile::decodeName(device));
     QString devicePath = devinfo.canonicalFilePath();
 
-    QDirIterator it(QLatin1String(pathDiskByLabel), QDir::NoDotAndDotDot);
+    QDirIterator it(QLatin1StringView(pathDiskByLabel), QDir::NoDotAndDotDot);
     while (it.hasNext()) {
         QFileInfo fileInfo = it.nextFileInfo();
         if (fileInfo.isSymLink() && fileInfo.symLinkTarget() == devicePath)
diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index 9dc84094ce..90e78c9500 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -3597,12 +3597,8 @@ static QString errorMessage(QUrlPrivate::ErrorCode errorCode, const QString &err
 static inline void appendComponentIfPresent(QString &msg, bool present, const char *componentName,
                                             const QString &component)
 {
-    if (present) {
-        msg += QLatin1String(componentName);
-        msg += u'"';
-        msg += component;
-        msg += "\","_L1;
-    }
+    if (present)
+        msg += QLatin1StringView(componentName) % u'"' % component % "\","_L1;
 }
 
 /*!
diff --git a/src/corelib/io/qurlidna.cpp b/src/corelib/io/qurlidna.cpp
index 170475ce61..ae9192ab08 100644
--- a/src/corelib/io/qurlidna.cpp
+++ b/src/corelib/io/qurlidna.cpp
@@ -968,7 +968,7 @@ QStringList QUrl::idnWhitelist()
         list.reserve(idn_whitelist.count());
         int i = 0;
         while (i < idn_whitelist.count()) {
-            list << QLatin1String(idn_whitelist.at(i));
+            list << QLatin1StringView(idn_whitelist.at(i));
             ++i;
         }
         return list;
diff --git a/src/corelib/kernel/qcoreapplication_win.cpp b/src/corelib/kernel/qcoreapplication_win.cpp
index 03559d90ae..78346bc827 100644
--- a/src/corelib/kernel/qcoreapplication_win.cpp
+++ b/src/corelib/kernel/qcoreapplication_win.cpp
@@ -175,7 +175,7 @@ static QString flagsValue(const QWinMessageMapping<IntType> *haystack,
         if ((p->value & value) == p->value) {
             if (!result.isEmpty())
                 result += " | "_L1;
-            result += QLatin1String(p->name);
+            result += QLatin1StringView(p->name);
         }
     }
     return result;
@@ -677,7 +677,7 @@ QString decodeMSG(const MSG& msg)
     switch (msg.message) {
         case WM_ACTIVATE:
             if (const char *a = activateParameter(uint(wParam)))
-                parameters += QLatin1String(a);
+                parameters += QLatin1StringView(a);
             parameters += " Hwnd "_L1 + hwndS;
             break;
         case WM_CAPTURECHANGED:
@@ -719,7 +719,7 @@ QString decodeMSG(const MSG& msg)
             {
                 parameters = "Command("_L1;
                 if (const char *c = imeCommand(uint(wParam)))
-                    parameters += QLatin1String(c);
+                    parameters += QLatin1StringView(c);
                 parameters += " : "_L1 + lParamS;
             }
             break;
@@ -794,7 +794,7 @@ QString decodeMSG(const MSG& msg)
         case WM_SETCURSOR:
             parameters = QString::asprintf("HitTestCode(0x%x) MouseMsg(", LOWORD(lParam));
             if (const char *mouseMsg = findWMstr(HIWORD(lParam)))
-                parameters += QLatin1String(mouseMsg);
+                parameters += QLatin1StringView(mouseMsg);
             parameters += u')';
             break;
         case WM_SETFOCUS:
@@ -809,7 +809,7 @@ QString decodeMSG(const MSG& msg)
             parameters = QString::asprintf("w,h(%4d,%4d) showmode(",
                                            LOWORD(lParam), HIWORD(lParam));
             if (const char *showMode = wmSizeParam(uint(wParam)))
-                parameters += QLatin1String(showMode);
+                parameters += QLatin1StringView(showMode);
             parameters += u')';
             break;
         case WM_WINDOWPOSCHANGED:
@@ -822,7 +822,7 @@ QString decodeMSG(const MSG& msg)
                                                winPos->x, winPos->y, winPos->cx, winPos->cy,
                                                winPosFlags(winPos->flags).toLatin1().constData());
                 if (const char *h = winPosInsertAfter(insertAfter))
-                    parameters += QLatin1String(h);
+                    parameters += QLatin1StringView(h);
                 else
                     parameters += QString::number(insertAfter, 16);
                 parameters += u')';
@@ -831,7 +831,7 @@ QString decodeMSG(const MSG& msg)
         case WM_QUERYENDSESSION:
             parameters = "End session: "_L1;
             if (const char *logoffOption = sessionMgrLogOffOption(uint(wParam)))
-                parameters += QLatin1String(logoffOption);
+                parameters += QLatin1StringView(logoffOption);
             break;
         default:
             parameters = "wParam"_L1 + wParamS + " lParam"_L1 + lParamS;
diff --git a/src/corelib/kernel/qjniobject.cpp b/src/corelib/kernel/qjniobject.cpp
index 1057f5fb59..fcc4851c74 100644
--- a/src/corelib/kernel/qjniobject.cpp
+++ b/src/corelib/kernel/qjniobject.cpp
@@ -317,7 +317,7 @@ public:
     QByteArray m_className;
 };
 
-static inline QLatin1String keyBase()
+static inline QLatin1StringView keyBase()
 {
     return "%1%2:%3"_L1;
 }
@@ -367,7 +367,7 @@ jclass QJniObject::loadClass(const QByteArray &className, JNIEnv *env, bool binE
 
     QWriteLocker locker(cachedClassesLock);
     // did we lose the race?
-    const QLatin1String key(binEncClassName);
+    const QLatin1StringView key(binEncClassName);
     const QHash<QString, jclass>::const_iterator &it = cachedClasses->constFind(key);
     if (it != cachedClasses->constEnd())
         return it.value();
@@ -418,9 +418,9 @@ jmethodID QJniObject::getCachedMethodID(JNIEnv *env,
     if (className.isEmpty())
         return getMethodID(env, clazz, name, signature, isStatic);
 
-    const QString key = keyBase().arg(QLatin1String(className),
-                                      QLatin1String(name),
-                                      QLatin1String(signature));
+    const QString key = keyBase().arg(QLatin1StringView(className),
+                                      QLatin1StringView(name),
+                                      QLatin1StringView(signature));
     QHash<QString, jmethodID>::const_iterator it;
 
     {
@@ -478,9 +478,9 @@ jfieldID QJniObject::getCachedFieldID(JNIEnv *env,
     if (className.isNull())
         return getFieldID(env, clazz, name, signature, isStatic);
 
-    const QString key = keyBase().arg(QLatin1String(className),
-                                      QLatin1String(name),
-                                      QLatin1String(signature));
+    const QString key = keyBase().arg(QLatin1StringView(className),
+                                      QLatin1StringView(name),
+                                      QLatin1StringView(signature));
     QHash<QString, jfieldID>::const_iterator it;
 
     {
@@ -520,7 +520,7 @@ jclass QtAndroidPrivate::findClass(const char *className, JNIEnv *env)
     if (clazz || isCached)
         return clazz;
 
-    const QLatin1String key(classDotEnc);
+    const QLatin1StringView key(classDotEnc);
     if (env) { // We got an env. pointer (We expect this to be the right env. and call FindClass())
         QWriteLocker locker(cachedClassesLock);
         const QHash<QString, jclass>::const_iterator &it = cachedClasses->constFind(key);
diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index b55b630b04..4768edc803 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -160,13 +160,13 @@ static inline const char *rawStringData(const QMetaObject *mo, int index)
     return reinterpret_cast<const char *>(mo->d.stringdata) + offset;
 }
 
-static inline QLatin1String stringDataView(const QMetaObject *mo, int index)
+static inline QLatin1StringView stringDataView(const QMetaObject *mo, int index)
 {
     Q_ASSERT(priv(mo->d.data)->revision >= 7);
     uint offset = mo->d.stringdata[2*index];
     uint length = mo->d.stringdata[2*index + 1];
     const char *string = reinterpret_cast<const char *>(mo->d.stringdata) + offset;
-    return QLatin1String(string, length);
+    return QLatin1StringView(string, length);
 }
 
 static inline QByteArray stringData(const QMetaObject *mo, int index)
@@ -2833,11 +2833,11 @@ const char *QMetaEnum::valueToKey(int value) const
     return nullptr;
 }
 
-static auto parse_scope(QLatin1String qualifiedKey) noexcept
+static auto parse_scope(QLatin1StringView qualifiedKey) noexcept
 {
     struct R {
-        std::optional<QLatin1String> scope;
-        QLatin1String key;
+        std::optional<QLatin1StringView> scope;
+        QLatin1StringView key;
     };
     const auto scopePos = qualifiedKey.lastIndexOf("::"_L1);
     if (scopePos < 0)
@@ -2863,7 +2863,7 @@ int QMetaEnum::keysToValue(const char *keys, bool *ok) const
     if (!mobj || !keys)
         return -1;
 
-    auto lookup = [&] (QLatin1String key) -> std::optional<int> {
+    auto lookup = [&] (QLatin1StringView key) -> std::optional<int> {
         for (int i = data.keyCount() - 1; i >= 0; --i) {
             if (key == stringDataView(mobj, mobj->d.data[data.data() + 2*i]))
                 return mobj->d.data[data.data() + 2*i + 1];
@@ -2873,7 +2873,7 @@ int QMetaEnum::keysToValue(const char *keys, bool *ok) const
     auto className = [&] { return stringDataView(mobj, priv(mobj->d.data)->className); };
 
     int value = 0;
-    for (const QLatin1String &untrimmed : qTokenize(QLatin1String{keys}, u'|')) {
+    for (const QLatin1StringView &untrimmed : qTokenize(QLatin1StringView{keys}, u'|')) {
         const auto parsed = parse_scope(untrimmed.trimmed());
         if (parsed.scope && *parsed.scope != className())
             return -1; // wrong type name in qualified name
@@ -2920,7 +2920,7 @@ QByteArray QMetaEnum::valueToKeys(int value) const
     QByteArray keys;
     if (!mobj)
         return keys;
-    QVarLengthArray<QLatin1String, sizeof(int) * CHAR_BIT> parts;
+    QVarLengthArray<QLatin1StringView, sizeof(int) * CHAR_BIT> parts;
     int v = value;
     // reverse iterate to ensure values like Qt::Dialog=0x2|Qt::Window are processed first.
     for (int i = data.keyCount() - 1; i >= 0; --i) {
diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp
index d85229b2a4..9f18679763 100644
--- a/src/corelib/kernel/qmetatype.cpp
+++ b/src/corelib/kernel/qmetatype.cpp
@@ -871,7 +871,7 @@ static const struct { const char * typeName; int typeNameLength; int type; } typ
 static const struct : QMetaTypeModuleHelper
 {
     template<typename T, typename LiteralWrapper =
-             std::conditional_t<std::is_same_v<T, QString>, QLatin1String, const char *>>
+             std::conditional_t<std::is_same_v<T, QString>, QLatin1StringView, const char *>>
     static inline bool convertToBool(const T &source)
     {
         T str = source.toLower();
diff --git a/src/corelib/kernel/qobject.h b/src/corelib/kernel/qobject.h
index 4d7faaf013..f576459424 100644
--- a/src/corelib/kernel/qobject.h
+++ b/src/corelib/kernel/qobject.h
@@ -611,7 +611,7 @@ namespace QtPrivate {
     inline QObject & deref_for_methodcall(QObject &o) { return  o; }
     inline QObject & deref_for_methodcall(QObject *o) { return *o; }
 }
-#define Q_SET_OBJECT_NAME(obj) QT_PREPEND_NAMESPACE(QtPrivate)::deref_for_methodcall(obj).setObjectName(QLatin1String(#obj))
+#define Q_SET_OBJECT_NAME(obj) QT_PREPEND_NAMESPACE(QtPrivate)::deref_for_methodcall(obj).setObjectName(QLatin1StringView(#obj))
 
 QT_END_NAMESPACE
 
diff --git a/src/corelib/kernel/qsharedmemory.cpp b/src/corelib/kernel/qsharedmemory.cpp
index ba8bf5eca3..090ee28e45 100644
--- a/src/corelib/kernel/qsharedmemory.cpp
+++ b/src/corelib/kernel/qsharedmemory.cpp
@@ -102,7 +102,7 @@ QSharedMemoryPrivate::makePlatformSafeKey(const QString &key,
            (ch >= u'A' && ch <= u'Z'))
            result += ch;
     }
-    result.append(QLatin1String(hex));
+    result.append(QLatin1StringView(hex));
 
 #ifdef Q_OS_WIN
     return result;
diff --git a/src/corelib/kernel/qsharedmemory_android.cpp b/src/corelib/kernel/qsharedmemory_android.cpp
index 7165ebcc3d..3d8a91edb5 100644
--- a/src/corelib/kernel/qsharedmemory_android.cpp
+++ b/src/corelib/kernel/qsharedmemory_android.cpp
@@ -53,7 +53,7 @@ QSharedMemoryPrivate::QSharedMemoryPrivate()
 {
 }
 
-void QSharedMemoryPrivate::setErrorString(QLatin1String function)
+void QSharedMemoryPrivate::setErrorString(QLatin1StringView function)
 {
     Q_UNUSED(function);
     Q_UNIMPLEMENTED();
diff --git a/src/corelib/kernel/qsharedmemory_p.h b/src/corelib/kernel/qsharedmemory_p.h
index e06e7e86f3..bbe71c45e2 100644
--- a/src/corelib/kernel/qsharedmemory_p.h
+++ b/src/corelib/kernel/qsharedmemory_p.h
@@ -155,7 +155,7 @@ public:
     bool attach(QSharedMemory::AccessMode mode);
     bool detach();
 
-    void setErrorString(QLatin1String function);
+    void setErrorString(QLatin1StringView function);
 
 #ifndef QT_NO_SYSTEMSEMAPHORE
     bool tryLocker(QSharedMemoryLocker *locker, const QString &function) {
diff --git a/src/corelib/kernel/qsharedmemory_unix.cpp b/src/corelib/kernel/qsharedmemory_unix.cpp
index bc0f3b03ca..f9617262fc 100644
--- a/src/corelib/kernel/qsharedmemory_unix.cpp
+++ b/src/corelib/kernel/qsharedmemory_unix.cpp
@@ -80,7 +80,7 @@ QSharedMemoryPrivate::QSharedMemoryPrivate() :
 {
 }
 
-void QSharedMemoryPrivate::setErrorString(QLatin1String function)
+void QSharedMemoryPrivate::setErrorString(QLatin1StringView function)
 {
     // EINVAL is handled in functions so they can give better error strings
     switch (errno) {
diff --git a/src/corelib/kernel/qsharedmemory_win.cpp b/src/corelib/kernel/qsharedmemory_win.cpp
index 920f60b286..5fced88120 100644
--- a/src/corelib/kernel/qsharedmemory_win.cpp
+++ b/src/corelib/kernel/qsharedmemory_win.cpp
@@ -58,7 +58,7 @@ QSharedMemoryPrivate::QSharedMemoryPrivate() :
 {
 }
 
-void QSharedMemoryPrivate::setErrorString(QLatin1String function)
+void QSharedMemoryPrivate::setErrorString(QLatin1StringView function)
 {
     DWORD windowsError = GetLastError();
     if (windowsError == 0)
diff --git a/src/corelib/kernel/qsystemsemaphore_p.h b/src/corelib/kernel/qsystemsemaphore_p.h
index 56619d7318..7b8c2ed3bf 100644
--- a/src/corelib/kernel/qsystemsemaphore_p.h
+++ b/src/corelib/kernel/qsystemsemaphore_p.h
@@ -72,7 +72,7 @@ public:
 
     QString makeKeyFileName()
     {
-        return QSharedMemoryPrivate::makePlatformSafeKey(key, QLatin1String("qipc_systemsem_"));
+        return QSharedMemoryPrivate::makePlatformSafeKey(key, QLatin1StringView("qipc_systemsem_"));
     }
 
     inline void setError(QSystemSemaphore::SystemSemaphoreError e, const QString &message)
diff --git a/src/corelib/kernel/qvariant.cpp b/src/corelib/kernel/qvariant.cpp
index 72dce5e32f..9f003aa2b4 100644
--- a/src/corelib/kernel/qvariant.cpp
+++ b/src/corelib/kernel/qvariant.cpp
@@ -549,7 +549,7 @@ QVariant::QVariant(const QVariant &p)
 */
 
 /*!
-  \fn QVariant::QVariant(QLatin1String val)
+    \fn QVariant::QVariant(QLatin1StringView val)
 
     Constructs a new variant with a string value, \a val.
 */
@@ -858,7 +858,7 @@ QVariant::QVariant(const QString &val)
 QVariant::QVariant(QChar val)
     : d(QMetaType::fromType<QChar>())
 { v_construct<QChar>(&d, val);  }
-QVariant::QVariant(QLatin1String val)
+QVariant::QVariant(QLatin1StringView val)
     : d(QMetaType::fromType<QString>())
 { v_construct<QString>(&d, val); }
 QVariant::QVariant(const QStringList &val)
diff --git a/src/corelib/kernel/qvariant.h b/src/corelib/kernel/qvariant.h
index 3481a5e347..c6a3965f55 100644
--- a/src/corelib/kernel/qvariant.h
+++ b/src/corelib/kernel/qvariant.h
@@ -190,7 +190,7 @@ class Q_CORE_EXPORT QVariant
     QVariant(const QByteArray &bytearray);
     QVariant(const QBitArray &bitarray);
     QVariant(const QString &string);
-    QVariant(QLatin1String string);
+    QVariant(QLatin1StringView string);
     QVariant(const QStringList &stringlist);
     QVariant(QChar qchar);
     QVariant(QDate date);
diff --git a/src/corelib/mimetypes/qmimemagicrule.cpp b/src/corelib/mimetypes/qmimemagicrule.cpp
index 13e60739e0..4b8970821f 100644
--- a/src/corelib/mimetypes/qmimemagicrule.cpp
+++ b/src/corelib/mimetypes/qmimemagicrule.cpp
@@ -263,7 +263,7 @@ QMimeMagicRule::QMimeMagicRule(const QString &type,
         if (Q_UNLIKELY(!ok)) {
             m_type = Invalid;
             if (errorString)
-                *errorString = "Invalid magic rule value \""_L1 + QLatin1String(m_value) + u'"';
+                *errorString = "Invalid magic rule value \""_L1 + QLatin1StringView(m_value) + u'"';
             return;
         }
         m_numberMask = !m_mask.isEmpty() ? m_mask.toUInt(&ok, 0) : 0; // autodetect base
@@ -277,7 +277,7 @@ QMimeMagicRule::QMimeMagicRule(const QString &type,
             if (Q_UNLIKELY(m_mask.size() < 4 || !m_mask.startsWith("0x"))) {
                 m_type = Invalid;
                 if (errorString)
-                    *errorString = "Invalid magic rule mask \""_L1 + QLatin1String(m_mask) + u'"';
+                    *errorString = "Invalid magic rule mask \""_L1 + QLatin1StringView(m_mask) + u'"';
                 return;
             }
             const QByteArray &tempMask = QByteArray::fromHex(QByteArray::fromRawData(
@@ -285,7 +285,7 @@ QMimeMagicRule::QMimeMagicRule(const QString &type,
             if (Q_UNLIKELY(tempMask.size() != m_pattern.size())) {
                 m_type = Invalid;
                 if (errorString)
-                    *errorString = "Invalid magic rule mask size \""_L1 + QLatin1String(m_mask) + u'"';
+                    *errorString = "Invalid magic rule mask size \""_L1 + QLatin1StringView(m_mask) + u'"';
                 return;
             }
             m_mask = tempMask;
diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp
index 951ad2ca49..78c7082b12 100644
--- a/src/corelib/mimetypes/qmimeprovider.cpp
+++ b/src/corelib/mimetypes/qmimeprovider.cpp
@@ -275,14 +275,14 @@ void QMimeBinaryProvider::matchGlobList(QMimeGlobMatchResult &result, CacheFile
         const int weight = flagsAndWeight & 0xff;
         const bool caseSensitive = flagsAndWeight & 0x100;
         const Qt::CaseSensitivity qtCaseSensitive = caseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive;
-        const QString pattern = QLatin1String(cacheFile->getCharStar(globOffset));
+        const QString pattern = QLatin1StringView(cacheFile->getCharStar(globOffset));
 
         const char *mimeType = cacheFile->getCharStar(mimeTypeOffset);
         //qDebug() << pattern << mimeType << weight << caseSensitive;
         QMimeGlobPattern glob(pattern, QString() /*unused*/, weight, qtCaseSensitive);
 
         if (glob.matchFileName(fileName))
-            result.addMatch(QLatin1String(mimeType), weight, pattern);
+            result.addMatch(QLatin1StringView(mimeType), weight, pattern);
     }
 }
 
@@ -318,7 +318,7 @@ bool QMimeBinaryProvider::matchSuffixTree(QMimeGlobMatchResult &result, QMimeBin
                     const int weight = flagsAndWeight & 0xff;
                     const bool caseSensitive = flagsAndWeight & 0x100;
                     if (caseSensitiveCheck || !caseSensitive) {
-                        result.addMatch(QLatin1String(mimeType), weight,
+                        result.addMatch(QLatin1StringView(mimeType), weight,
                                         u'*' + QStringView{fileName}.mid(charPos + 1),
                                         fileName.size() - charPos - 2);
                         success = true;
@@ -376,7 +376,7 @@ void QMimeBinaryProvider::findByMagic(const QByteArray &data, int *accuracyPtr,
             *accuracyPtr = m_cacheFile->getUint32(off);
             // Return the first match. We have no rules for conflicting magic data...
             // (mime.cache itself is sorted, but what about local overrides with a lower prio?)
-            candidate = mimeTypeForNameUnchecked(QLatin1String(mimeType));
+            candidate = mimeTypeForNameUnchecked(QLatin1StringView(mimeType));
             return;
         }
     }
@@ -435,7 +435,7 @@ QString QMimeBinaryProvider::resolveAlias(const QString &name)
         } else {
             const int mimeOffset = m_cacheFile->getUint32(off + 4);
             const char *mimeType = m_cacheFile->getCharStar(mimeOffset);
-            return QLatin1String(mimeType);
+            return QLatin1StringView(mimeType);
         }
     }
     return QString();
@@ -577,7 +577,8 @@ bool QMimeBinaryProvider::loadMimeTypePrivate(QMimeTypePrivate &data)
 }
 
 // Binary search in the icons or generic-icons list
-QLatin1String QMimeBinaryProvider::iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime)
+QLatin1StringView QMimeBinaryProvider::iconForMime(CacheFile *cacheFile, int posListOffset,
+                                                   const QByteArray &inputMime)
 {
     const int iconsListOffset = cacheFile->getUint32(posListOffset);
     const int numIcons = cacheFile->getUint32(iconsListOffset);
@@ -595,16 +596,16 @@ QLatin1String QMimeBinaryProvider::iconForMime(CacheFile *cacheFile, int posList
             end = medium - 1;
         else {
             const int iconOffset = cacheFile->getUint32(off + 4);
-            return QLatin1String(cacheFile->getCharStar(iconOffset));
+            return QLatin1StringView(cacheFile->getCharStar(iconOffset));
         }
     }
-    return QLatin1String();
+    return QLatin1StringView();
 }
 
 void QMimeBinaryProvider::loadIcon(QMimeTypePrivate &data)
 {
     const QByteArray inputMime = data.name.toLatin1();
-    const QLatin1String icon = iconForMime(m_cacheFile, PosIconsListOffset, inputMime);
+    const QLatin1StringView icon = iconForMime(m_cacheFile, PosIconsListOffset, inputMime);
     if (!icon.isEmpty()) {
         data.iconName = icon;
     }
@@ -613,7 +614,7 @@ void QMimeBinaryProvider::loadIcon(QMimeTypePrivate &data)
 void QMimeBinaryProvider::loadGenericIcon(QMimeTypePrivate &data)
 {
     const QByteArray inputMime = data.name.toLatin1();
-    const QLatin1String icon = iconForMime(m_cacheFile, PosGenericIconsListOffset, inputMime);
+    const QLatin1StringView icon = iconForMime(m_cacheFile, PosGenericIconsListOffset, inputMime);
     if (!icon.isEmpty()) {
         data.genericIconName = icon;
     }
diff --git a/src/corelib/mimetypes/qmimeprovider_p.h b/src/corelib/mimetypes/qmimeprovider_p.h
index d895240991..ae1117f589 100644
--- a/src/corelib/mimetypes/qmimeprovider_p.h
+++ b/src/corelib/mimetypes/qmimeprovider_p.h
@@ -120,7 +120,7 @@ private:
     void matchGlobList(QMimeGlobMatchResult &result, CacheFile *cacheFile, int offset, const QString &fileName);
     bool matchSuffixTree(QMimeGlobMatchResult &result, CacheFile *cacheFile, int numEntries, int firstOffset, const QString &fileName, int charPos, bool caseSensitiveCheck);
     bool matchMagicRule(CacheFile *cacheFile, int numMatchlets, int firstOffset, const QByteArray &data);
-    QLatin1String iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime);
+    QLatin1StringView iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime);
     void loadMimeTypeList();
     bool checkCacheChanged();
 
diff --git a/src/corelib/mimetypes/qmimetypeparser.cpp b/src/corelib/mimetypes/qmimetypeparser.cpp
index af96d9b2d7..843957a607 100644
--- a/src/corelib/mimetypes/qmimetypeparser.cpp
+++ b/src/corelib/mimetypes/qmimetypeparser.cpp
@@ -114,13 +114,13 @@ QMimeTypeParserBase::ParseState QMimeTypeParserBase::nextState(ParseState curren
 {
     switch (currentState) {
     case ParseBeginning:
-        if (startElement == QLatin1String(mimeInfoTagC))
+        if (startElement == QLatin1StringView(mimeInfoTagC))
             return ParseMimeInfo;
-        if (startElement == QLatin1String(mimeTypeTagC))
+        if (startElement == QLatin1StringView(mimeTypeTagC))
             return ParseMimeType;
         return ParseError;
     case ParseMimeInfo:
-        return startElement == QLatin1String(mimeTypeTagC) ? ParseMimeType : ParseError;
+        return startElement == QLatin1StringView(mimeTypeTagC) ? ParseMimeType : ParseError;
     case ParseMimeType:
     case ParseComment:
     case ParseGenericIcon:
@@ -131,29 +131,29 @@ QMimeTypeParserBase::ParseState QMimeTypeParserBase::nextState(ParseState curren
     case ParseAlias:
     case ParseOtherMimeTypeSubTag:
     case ParseMagicMatchRule:
-        if (startElement == QLatin1String(mimeTypeTagC)) // Sequence of <mime-type>
+        if (startElement == QLatin1StringView(mimeTypeTagC)) // Sequence of <mime-type>
             return ParseMimeType;
-        if (startElement == QLatin1String(commentTagC))
+        if (startElement == QLatin1StringView(commentTagC))
             return ParseComment;
-        if (startElement == QLatin1String(genericIconTagC))
+        if (startElement == QLatin1StringView(genericIconTagC))
             return ParseGenericIcon;
-        if (startElement == QLatin1String(iconTagC))
+        if (startElement == QLatin1StringView(iconTagC))
             return ParseIcon;
-        if (startElement == QLatin1String(globTagC))
+        if (startElement == QLatin1StringView(globTagC))
             return ParseGlobPattern;
-        if (startElement == QLatin1String(globDeleteAllTagC))
+        if (startElement == QLatin1StringView(globDeleteAllTagC))
             return ParseGlobDeleteAll;
-        if (startElement == QLatin1String(subClassTagC))
+        if (startElement == QLatin1StringView(subClassTagC))
             return ParseSubClass;
-        if (startElement == QLatin1String(aliasTagC))
+        if (startElement == QLatin1StringView(aliasTagC))
             return ParseAlias;
-        if (startElement == QLatin1String(magicTagC))
+        if (startElement == QLatin1StringView(magicTagC))
             return ParseMagic;
-        if (startElement == QLatin1String(matchTagC))
+        if (startElement == QLatin1StringView(matchTagC))
             return ParseMagicMatchRule;
         return ParseOtherMimeTypeSubTag;
     case ParseMagic:
-        if (startElement == QLatin1String(matchTagC))
+        if (startElement == QLatin1StringView(matchTagC))
             return ParseMagicMatchRule;
         break;
     case ParseError:
@@ -190,10 +190,10 @@ struct CreateMagicMatchRuleResult
 
 static CreateMagicMatchRuleResult createMagicMatchRule(const QXmlStreamAttributes &atts)
 {
-    const auto type = atts.value(QLatin1String(matchTypeAttributeC));
-    const auto value = atts.value(QLatin1String(matchValueAttributeC));
-    const auto offsets = atts.value(QLatin1String(matchOffsetAttributeC));
-    const auto mask = atts.value(QLatin1String(matchMaskAttributeC));
+    const auto type = atts.value(QLatin1StringView(matchTypeAttributeC));
+    const auto value = atts.value(QLatin1StringView(matchValueAttributeC));
+    const auto offsets = atts.value(QLatin1StringView(matchOffsetAttributeC));
+    const auto mask = atts.value(QLatin1StringView(matchMaskAttributeC));
     return CreateMagicMatchRuleResult(type, value, offsets, mask);
 }
 #endif
@@ -220,7 +220,7 @@ bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString
             const QXmlStreamAttributes atts = reader.attributes();
             switch (ps) {
             case ParseMimeType: { // start parsing a MIME type name
-                const QString name = atts.value(QLatin1String(mimeTypeAttributeC)).toString();
+                const QString name = atts.value(QLatin1StringView(mimeTypeAttributeC)).toString();
                 if (name.isEmpty()) {
                     reader.raiseError(QStringLiteral("Missing 'type'-attribute"));
                 } else {
@@ -229,15 +229,15 @@ bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString
             }
                 break;
             case ParseGenericIcon:
-                data.genericIconName = atts.value(QLatin1String(nameAttributeC)).toString();
+                data.genericIconName = atts.value(QLatin1StringView(nameAttributeC)).toString();
                 break;
             case ParseIcon:
-                data.iconName = atts.value(QLatin1String(nameAttributeC)).toString();
+                data.iconName = atts.value(QLatin1StringView(nameAttributeC)).toString();
                 break;
             case ParseGlobPattern: {
-                const QString pattern = atts.value(QLatin1String(patternAttributeC)).toString();
-                unsigned weight = atts.value(QLatin1String(weightAttributeC)).toInt();
-                const bool caseSensitive = atts.value(QLatin1String(caseSensitiveAttributeC)) == "true"_L1;
+                const QString pattern = atts.value(QLatin1StringView(patternAttributeC)).toString();
+                unsigned weight = atts.value(QLatin1StringView(weightAttributeC)).toInt();
+                const bool caseSensitive = atts.value(QLatin1StringView(caseSensitiveAttributeC)) == "true"_L1;
 
                 if (weight == 0)
                     weight = QMimeGlobPattern::DefaultWeight;
@@ -253,14 +253,14 @@ bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString
                 data.globPatterns.clear();
                 break;
             case ParseSubClass: {
-                const QString inheritsFrom = atts.value(QLatin1String(mimeTypeAttributeC)).toString();
+                const QString inheritsFrom = atts.value(QLatin1StringView(mimeTypeAttributeC)).toString();
                 if (!inheritsFrom.isEmpty())
                     processParent(data.name, inheritsFrom);
             }
                 break;
             case ParseComment: {
                 // comments have locale attributes.
-                QString locale = atts.value(QLatin1String(localeAttributeC)).toString();
+                QString locale = atts.value(QLatin1StringView(localeAttributeC)).toString();
                 const QString comment = reader.readElementText();
                 if (locale.isEmpty())
                     locale = QString::fromLatin1("default");
@@ -268,14 +268,14 @@ bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString
             }
                 break;
             case ParseAlias: {
-                const QString alias = atts.value(QLatin1String(mimeTypeAttributeC)).toString();
+                const QString alias = atts.value(QLatin1StringView(mimeTypeAttributeC)).toString();
                 if (!alias.isEmpty())
                     processAlias(alias, data.name);
             }
                 break;
             case ParseMagic: {
                 priority = 50;
-                const auto priorityS = atts.value(QLatin1String(priorityAttributeC));
+                const auto priorityS = atts.value(QLatin1StringView(priorityAttributeC));
                 if (!priorityS.isEmpty()) {
                     if (!parseNumber(priorityS, &priority, errorMessage))
                         return false;
@@ -312,15 +312,15 @@ bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString
         case QXmlStreamReader::EndElement: // Finished element
         {
             const auto elementName = reader.name();
-            if (elementName == QLatin1String(mimeTypeTagC)) {
+            if (elementName == QLatin1StringView(mimeTypeTagC)) {
                 if (!process(QMimeType(data), errorMessage))
                     return false;
                 data.clear();
-            } else if (elementName == QLatin1String(matchTagC)) {
+            } else if (elementName == QLatin1StringView(matchTagC)) {
                 // Closing a <match> tag, pop stack
                 currentRules.pop();
                 //qDebug() << " MATCH closed. Stack size is now" << currentRules.size();
-            } else if (elementName == QLatin1String(magicTagC)) {
+            } else if (elementName == QLatin1StringView(magicTagC)) {
                 //qDebug() << "MAGIC ended, we got" << rules.count() << "rules, with prio" << priority;
                 // Finished a <magic> sequence
                 QMimeMagicRuleMatcher ruleMatcher(data.name, priority);
diff --git a/src/corelib/plugin/qcoffpeparser.cpp b/src/corelib/plugin/qcoffpeparser.cpp
index 1ebca08c32..d9dd98a2f4 100644
--- a/src/corelib/plugin/qcoffpeparser.cpp
+++ b/src/corelib/plugin/qcoffpeparser.cpp
@@ -56,7 +56,7 @@ using namespace Qt::StringLiterals;
 static constexpr bool IncludeValidityChecks = true;
 
 static constexpr inline auto metadataSectionName() noexcept { return ".qtmetadata"_L1; }
-static constexpr QLatin1String truncatedSectionName =
+static constexpr QLatin1StringView truncatedSectionName =
         metadataSectionName().left(sizeof(IMAGE_SECTION_HEADER::Name));
 
 #ifdef QT_BUILD_INTERNAL
@@ -328,7 +328,7 @@ findStringTable(QByteArrayView data, const IMAGE_NT_HEADERS *ntHeader, const Err
     return data.sliced(off, size);
 }
 
-static QLatin1String findSectionName(const IMAGE_SECTION_HEADER *section, QByteArrayView stringTable)
+static QLatin1StringView findSectionName(const IMAGE_SECTION_HEADER *section, QByteArrayView stringTable)
 {
     auto ptr = reinterpret_cast<const char *>(section->Name);
     qsizetype n = qstrnlen(ptr, sizeof(section->Name));
@@ -344,13 +344,13 @@ static QLatin1String findSectionName(const IMAGE_SECTION_HEADER *section, QByteA
         bool ok;
         qsizetype offset = QByteArrayView(ptr + 1, n - 1).toUInt(&ok);
         if (!ok || offset >= stringTable.size())
-            return QLatin1String();
+            return {};
 
         ptr = stringTable.data() + offset;
         n = qstrnlen(ptr, stringTable.size() - offset);
     }
 
-    return QLatin1String(ptr, n);
+    return QLatin1StringView(ptr, n);
 }
 
 QLibraryScanResult QCoffPeParser::parse(QByteArrayView data, QString *errMsg)
@@ -373,7 +373,7 @@ QLibraryScanResult QCoffPeParser::parse(QByteArrayView data, QString *errMsg)
     // scan the sections now
     const auto sectionTableEnd = section + ntHeaders->FileHeader.NumberOfSections;
     for ( ; section < sectionTableEnd; ++section) {
-        QLatin1String sectionName = findSectionName(section, stringTable);
+        QLatin1StringView sectionName = findSectionName(section, stringTable);
         peDebug << "section" << sectionName << SectionDebug{section};
         if (IncludeValidityChecks && sectionName.isEmpty())
             return error(QLibrary::tr("a section name is empty or extends past the end of the file"));
diff --git a/src/corelib/plugin/qelfparser_p.cpp b/src/corelib/plugin/qelfparser_p.cpp
index f51b6915bc..21f6f817e4 100644
--- a/src/corelib/plugin/qelfparser_p.cpp
+++ b/src/corelib/plugin/qelfparser_p.cpp
@@ -698,11 +698,11 @@ static QLibraryScanResult scanSections(QByteArrayView data, const ErrorMaker &er
     const char *shstrtab_start = data.data() + offset;
     shdr = sections;
     for (int section = 0; shdr != sections_end; ++section, ++shdr) {
-        QLatin1String name;
+        QLatin1StringView name;
         if (shdr->sh_name < shstrtab_size) {
             const char *namestart = shstrtab_start + shdr->sh_name;
             size_t len = qstrnlen(namestart, shstrtab_size - shdr->sh_name);
-            name = QLatin1String(namestart, len);
+            name = QLatin1StringView(namestart, len);
         }
         qEDebug << "section" << section << "name" << name << ElfSectionDebug{shdr};
 
diff --git a/src/corelib/plugin/qfactoryloader.cpp b/src/corelib/plugin/qfactoryloader.cpp
index 97cc04e645..cfd75aa3b7 100644
--- a/src/corelib/plugin/qfactoryloader.cpp
+++ b/src/corelib/plugin/qfactoryloader.cpp
@@ -230,7 +230,7 @@ inline void QFactoryLoaderPrivate::updateSinglePath(const QString &path)
         bool metaDataOk = false;
 
         QString iid = library->metaData.value(QtPluginMetaDataKeys::IID).toString();
-        if (iid == QLatin1String(this->iid.constData(), this->iid.size())) {
+        if (iid == QLatin1StringView(this->iid.constData(), this->iid.size())) {
             QCborMap object = library->metaData.value(QtPluginMetaDataKeys::MetaData).toMap();
             metaDataOk = true;
 
@@ -381,7 +381,7 @@ QFactoryLoader::MetaDataList QFactoryLoader::metaData() const
         metaData.append(library->metaData);
 #endif
 
-    QLatin1String iid(d->iid.constData(), d->iid.size());
+    QLatin1StringView iid(d->iid.constData(), d->iid.size());
     const auto staticPlugins = QPluginLoader::staticPlugins();
     for (const QStaticPlugin &plugin : staticPlugins) {
         QByteArrayView pluginData(static_cast<const char *>(plugin.rawMetaData), plugin.rawMetaDataSize);
@@ -414,7 +414,7 @@ QObject *QFactoryLoader::instance(int index) const
     lock.unlock();
 #endif
 
-    QLatin1String iid(d->iid.constData(), d->iid.size());
+    QLatin1StringView iid(d->iid.constData(), d->iid.size());
     const QList<QStaticPlugin> staticPlugins = QPluginLoader::staticPlugins();
     for (QStaticPlugin plugin : staticPlugins) {
         QByteArrayView pluginData(static_cast<const char *>(plugin.rawMetaData), plugin.rawMetaDataSize);
diff --git a/src/corelib/plugin/qlibrary.cpp b/src/corelib/plugin/qlibrary.cpp
index 1fdc05afeb..43dcb17184 100644
--- a/src/corelib/plugin/qlibrary.cpp
+++ b/src/corelib/plugin/qlibrary.cpp
@@ -642,7 +642,7 @@ bool QLibrary::isLibrary(const QString &fileName)
         return false;
 
     // if this throws an empty-array error, you need to fix the #ifdef's:
-    const QLatin1String candidates[] = {
+    const QLatin1StringView candidates[] = {
 # if defined(Q_OS_HPUX)
 /*
     See "HP-UX Linker and Libraries User's Guide", section "Link-time Differences between PA-RISC and IPF":
diff --git a/src/corelib/plugin/qlibrary_unix.cpp b/src/corelib/plugin/qlibrary_unix.cpp
index 1fcc22c8cc..4505aedfe1 100644
--- a/src/corelib/plugin/qlibrary_unix.cpp
+++ b/src/corelib/plugin/qlibrary_unix.cpp
@@ -299,7 +299,7 @@ bool QLibraryPrivate::unload_sys()
         if (!qstrcmp(error, "Shared objects still referenced")) // On QNX that's only "informative"
             return true;
         errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName,
-                                                                       QLatin1String(error));
+                                                                       QLatin1StringView(error));
 #else
         errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName, qdlerror());
 #endif
diff --git a/src/corelib/plugin/qsystemlibrary.cpp b/src/corelib/plugin/qsystemlibrary.cpp
index 956af50f5c..2b83724d38 100644
--- a/src/corelib/plugin/qsystemlibrary.cpp
+++ b/src/corelib/plugin/qsystemlibrary.cpp
@@ -102,7 +102,7 @@ HINSTANCE QSystemLibrary::load(const wchar_t *libraryName, bool onlySystemDirect
     searchOrder << qSystemDirectory();
 
     if (!onlySystemDirectory) {
-        const QString PATH(QLatin1String(qgetenv("PATH").constData()));
+        const QString PATH(QLatin1StringView(qgetenv("PATH")));
         searchOrder << PATH.split(u';', Qt::SkipEmptyParts);
     }
     QString fileName = QString::fromWCharArray(libraryName);
diff --git a/src/corelib/plugin/quuid.cpp b/src/corelib/plugin/quuid.cpp
index 7d9bd65f8b..e856edb7bf 100644
--- a/src/corelib/plugin/quuid.cpp
+++ b/src/corelib/plugin/quuid.cpp
@@ -395,7 +395,7 @@ static QUuid createFromName(const QUuid &ns, const QByteArray &baseData, QCrypto
     public data members in QUuid.
 
     \note In Qt versions prior to 6.3, this function was an overload
-    set consisting of QStringView and QLatin1String instead of
+    set consisting of QStringView and QLatin1StringView instead of
     one function taking QAnyStringView.
 
     \sa toString(), QUuid()
@@ -416,13 +416,13 @@ static QUuid uuidFromString(QStringView text) noexcept
     return _q_uuidFromHex(latin1);
 }
 
-static QUuid uuidFromString(QLatin1String text) noexcept
+static QUuid uuidFromString(QLatin1StringView text) noexcept
 {
     if (Q_UNLIKELY(text.size() < MaxStringUuidLength - 2
                    || (text.front() == '{' && text.size() < MaxStringUuidLength - 1))) {
         // Too short. Don't call _q_uuidFromHex(); QL1Ss need not be NUL-terminated,
         // and we don't want to read trailing garbage as potentially valid data.
-        text = QLatin1String();
+        text = QLatin1StringView();
     }
     return _q_uuidFromHex(text.data());
 }
@@ -431,7 +431,7 @@ Q_ALWAYS_INLINE
 // can treat UTF-8 the same as Latin-1:
 static QUuid uuidFromString(QUtf8StringView text) noexcept
 {
-    return uuidFromString(QLatin1String(text.data(), text.size()));
+    return uuidFromString(QLatin1StringView(text.data(), text.size()));
 }
 
 QUuid QUuid::fromString(QAnyStringView text) noexcept
diff --git a/src/corelib/plugin/quuid.h b/src/corelib/plugin/quuid.h
index cac6913d6b..f747c488db 100644
--- a/src/corelib/plugin/quuid.h
+++ b/src/corelib/plugin/quuid.h
@@ -103,7 +103,7 @@ public:
 #if QT_CORE_REMOVED_SINCE(6, 3)
     explicit QUuid(const QString &);
     static QUuid fromString(QStringView string) noexcept;
-    static QUuid fromString(QLatin1String string) noexcept;
+    static QUuid fromString(QLatin1StringView string) noexcept;
     explicit QUuid(const char *);
     explicit QUuid(const QByteArray &);
 #endif
diff --git a/src/corelib/serialization/qcbordiagnostic.cpp b/src/corelib/serialization/qcbordiagnostic.cpp
index 7950b2e524..06af1b4313 100644
--- a/src/corelib/serialization/qcbordiagnostic.cpp
+++ b/src/corelib/serialization/qcbordiagnostic.cpp
@@ -77,7 +77,7 @@ private:
             ++dn->nestingLevel;
             static const char indent[IndentationWidth + 1] = "    ";
             if (dn->opts & QCborValue::LineWrapped)
-                dn->separator += QLatin1String(indent, IndentationWidth);
+                dn->separator += QLatin1StringView(indent, IndentationWidth);
         }
         ~Nest()
         {
@@ -213,10 +213,10 @@ void DiagnosticNotation::appendArray(const QCborArray &a)
     result += u'[';
 
     // length 2 (including the space) when not line wrapping
-    QLatin1String commaValue(", ", opts & QCborValue::LineWrapped ? 1 : 2);
+    QLatin1StringView commaValue(", ", opts & QCborValue::LineWrapped ? 1 : 2);
     {
         Nest n(this);
-        QLatin1String comma;
+        QLatin1StringView comma;
         for (auto v : a) {
             result += comma + separator;
             comma = commaValue;
@@ -232,10 +232,10 @@ void DiagnosticNotation::appendMap(const QCborMap &m)
     result += u'{';
 
     // length 2 (including the space) when not line wrapping
-    QLatin1String commaValue(", ", opts & QCborValue::LineWrapped ? 1 : 2);
+    QLatin1StringView commaValue(", ", opts & QCborValue::LineWrapped ? 1 : 2);
     {
         Nest n(this);
-        QLatin1String comma;
+        QLatin1StringView comma;
         for (auto v : m) {
             result += comma + separator;
             comma = commaValue;
diff --git a/src/corelib/serialization/qcbormap.cpp b/src/corelib/serialization/qcbormap.cpp
index 3934c964e4..8a1c2524ae 100644
--- a/src/corelib/serialization/qcbormap.cpp
+++ b/src/corelib/serialization/qcbormap.cpp
@@ -328,7 +328,7 @@ QList<QCborValue> QCborMap::keys() const
     duplicate keys is usually an indication of a problem in the sender.
 
     \sa operator[](qint64), find(qint64), constFind(qint64), remove(qint64), contains(qint64)
-        value(QLatin1String), value(const QString &), value(const QCborValue &)
+        value(QLatin1StringView), value(const QString &), value(const QCborValue &)
  */
 
 /*!
@@ -350,7 +350,8 @@ QList<QCborValue> QCborMap::keys() const
     is usually an indication of a problem in the sender.
 
     \sa value(qint64), find(qint64), constFind(qint64), remove(qint64), contains(qint64)
-        operator[](QLatin1String), operator[](const QString &), operator[](const QCborOperator[] &)
+        operator[](QLatin1StringView), operator[](const QString &),
+        operator[](const QCborOperator[] &)
  */
 
 /*!
@@ -366,7 +367,7 @@ QList<QCborValue> QCborMap::keys() const
     is usually an indication of a problem in the sender.
 
     \sa value(qint64), operator[](qint64), find(qint64), contains(qint64),
-      take(QLatin1String), take(const QString &), take(const QCborValue &), insert()
+        take(QLatin1StringView), take(const QString &), take(const QCborValue &), insert()
  */
 
 /*!
@@ -382,7 +383,7 @@ QList<QCborValue> QCborMap::keys() const
     is usually an indication of a problem in the sender.
 
     \sa value(qint64), operator[](qint64), find(qint64), contains(qint64)
-        remove(QLatin1String), remove(const QString &), remove(const QCborValue &)
+        remove(QLatin1StringView), remove(const QString &), remove(const QCborValue &)
  */
 
 /*!
@@ -393,7 +394,7 @@ QList<QCborValue> QCborMap::keys() const
     are simpler to encode and decode.
 
     \sa value(qint64), operator[](qint64), find(qint64), remove(qint64),
-        contains(QLatin1String), remove(const QString &), remove(const QCborValue &)
+        contains(QLatin1StringView), remove(const QString &), remove(const QCborValue &)
  */
 
 /*!
@@ -418,7 +419,7 @@ QList<QCborValue> QCborMap::keys() const
     is usually an indication of a problem in the sender.
 
     \sa value(qint64), find(qint64), contains(qint64), remove(qint64),
-        operator[](QLatin1String), operator[](const QString &), operator[](const QCborValue &)
+        operator[](QLatin1StringView), operator[](const QString &), operator[](const QCborValue &)
  */
 QCborValueRef QCborMap::operator[](qint64 key)
 {
@@ -426,7 +427,7 @@ QCborValueRef QCborMap::operator[](qint64 key)
 }
 
 /*!
-    \fn QCborValue QCborMap::value(QLatin1String key) const
+    \fn QCborValue QCborMap::value(QLatin1StringView key) const
     \overload
 
     Returns the QCborValue element in this map that corresponds to key \a key,
@@ -443,13 +444,13 @@ QCborValueRef QCborMap::operator[](qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa operator[](QLatin1String), find(QLatin1String), constFind(QLatin1String),
-        remove(QLatin1String), contains(QLatin1String)
+    \sa operator[](QLatin1StringView), find(QLatin1StringView), constFind(QLatin1StringView),
+        remove(QLatin1StringView), contains(QLatin1StringView)
         value(qint64), value(const QString &), value(const QCborValue &)
  */
 
 /*!
-    \fn QCborValue QCborMap::operator[](QLatin1String key) const
+    \fn QCborValue QCborMap::operator[](QLatin1StringView key) const
     \overload
 
     Returns the QCborValue element in this map that corresponds to key \a key,
@@ -466,13 +467,13 @@ QCborValueRef QCborMap::operator[](qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), find(QLatin1String), constFind(QLatin1String),
-        remove(QLatin1String), contains(QLatin1String)
+    \sa value(QLatin1StringView), find(QLatin1StringView), constFind(QLatin1StringView),
+        remove(QLatin1StringView), contains(QLatin1StringView)
         operator[](qint64), operator[](const QString &), operator[](const QCborOperator[] &)
  */
 
 /*!
-    \fn QCborValue QCborMap::take(QLatin1String key)
+    \fn QCborValue QCborMap::take(QLatin1StringView key)
 
     Removes the key \a key and the corresponding value from the map and returns
     the value, if it is found. If the map contains no such key, this function does nothing.
@@ -483,12 +484,13 @@ QCborValueRef QCborMap::operator[](qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), operator[](QLatin1String), find(QLatin1String), contains(QLatin1String),
-      take(qint64), take(const QString &), take(const QCborValue &), insert()
+    \sa value(QLatin1StringView), operator[](QLatin1StringView), find(QLatin1StringView),
+        contains(QLatin1StringView), take(qint64), take(const QString &),
+        take(const QCborValue &), insert()
  */
 
 /*!
-    \fn void QCborMap::remove(QLatin1String key)
+    \fn void QCborMap::remove(QLatin1StringView key)
     \overload
 
     Removes the key \a key and the corresponding value from the map, if it is
@@ -500,19 +502,21 @@ QCborValueRef QCborMap::operator[](qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), operator[](QLatin1String), find(QLatin1String), contains(QLatin1String)
-        remove(qint64), remove(const QString &), remove(const QCborValue &)
+    \sa value(QLatin1StringView), operator[](QLatin1StringView), find(QLatin1StringView),
+        contains(QLatin1StringView), remove(qint64), remove(const QString &),
+        remove(const QCborValue &)
  */
 
 /*!
-    \fn bool QCborMap::contains(QLatin1String key) const
+    \fn bool QCborMap::contains(QLatin1StringView key) const
     \overload
 
     Returns true if this map contains a key-value pair identified by key \a
     key.
 
-    \sa value(QLatin1String), operator[](QLatin1String), find(QLatin1String), remove(QLatin1String),
-        contains(qint64), remove(const QString &), remove(const QCborValue &)
+    \sa value(QLatin1StringView), operator[](QLatin1StringView), find(QLatin1StringView),
+        remove(QLatin1StringView), contains(qint64), remove(const QString &),
+        remove(const QCborValue &)
  */
 
 /*!
@@ -537,10 +541,11 @@ QCborValueRef QCborMap::operator[](qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), find(QLatin1String), contains(QLatin1String), remove(QLatin1String),
-        operator[](qint64), operator[](const QString &), operator[](const QCborValue &)
+    \sa value(QLatin1StringView), find(QLatin1StringView), contains(QLatin1StringView),
+        remove(QLatin1StringView), operator[](qint64), operator[](const QString &),
+        operator[](const QCborValue &)
  */
-QCborValueRef QCborMap::operator[](QLatin1String key)
+QCborValueRef QCborMap::operator[](QLatin1StringView key)
 {
     return QCborContainerPrivate::findOrAddMapKey(*this, key);
 }
@@ -565,7 +570,7 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
 
     \sa operator[](const QString &), find(const QString &), constFind(const QString &),
         remove(const QString &), contains(const QString &)
-        value(qint64), value(QLatin1String), value(const QCborValue &)
+        value(qint64), value(QLatin1StringView), value(const QCborValue &)
  */
 
 /*!
@@ -588,7 +593,7 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
 
     \sa value(const QString &), find(const QString &), constFind(const QString &),
         remove(const QString &), contains(const QString &)
-        operator[](qint64), operator[](QLatin1String), operator[](const QCborOperator[] &)
+        operator[](qint64), operator[](QLatin1StringView), operator[](const QCborOperator[] &)
  */
 
 /*!
@@ -603,8 +608,9 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(const QString &), operator[](const QString &), find(const QString &), contains(const QString &),
-      take(QLatin1String), take(qint64), take(const QCborValue &), insert()
+    \sa value(const QString &), operator[](const QString &), find(const QString &),
+        contains(const QString &), take(QLatin1StringView), take(qint64),
+        take(const QCborValue &), insert()
  */
 
 /*!
@@ -622,7 +628,7 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
 
     \sa value(const QString &), operator[](const QString &), find(const QString &),
         contains(const QString &)
-        remove(qint64), remove(QLatin1String), remove(const QCborValue &)
+        remove(qint64), remove(QLatin1StringView), remove(const QCborValue &)
  */
 
 /*!
@@ -634,7 +640,7 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
 
     \sa value(const QString &), operator[](const QString &), find(const QString &),
         remove(const QString &),
-        contains(qint64), remove(QLatin1String), remove(const QCborValue &)
+        contains(qint64), remove(QLatin1StringView), remove(const QCborValue &)
  */
 
 /*!
@@ -659,8 +665,9 @@ QCborValueRef QCborMap::operator[](QLatin1String key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(const QString &), find(const QString &), contains(const QString &), remove(const QString &),
-        operator[](qint64), operator[](QLatin1String), operator[](const QCborValue &)
+    \sa value(const QString &), find(const QString &), contains(const QString &),
+        remove(const QString &), operator[](qint64), operator[](QLatin1StringView),
+        operator[](const QCborValue &)
  */
 QCborValueRef QCborMap::operator[](const QString & key)
 {
@@ -686,7 +693,7 @@ QCborValueRef QCborMap::operator[](const QString & key)
 
     \sa operator[](const QCborValue &), find(const QCborValue &), constFind(const QCborValue &),
         remove(const QCborValue &), contains(const QCborValue &)
-        value(qint64), value(QLatin1String), value(const QString &)
+        value(qint64), value(QLatin1StringView), value(const QString &)
  */
 
 /*!
@@ -708,7 +715,7 @@ QCborValueRef QCborMap::operator[](const QString & key)
 
     \sa value(const QCborValue &), find(const QCborValue &), constFind(const QCborValue &),
         remove(const QCborValue &), contains(const QCborValue &)
-        operator[](qint64), operator[](QLatin1String), operator[](const QCborOperator[] &)
+        operator[](qint64), operator[](QLatin1StringView), operator[](const QCborOperator[] &)
  */
 
 /*!
@@ -723,8 +730,9 @@ QCborValueRef QCborMap::operator[](const QString & key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(const QCborValue &), operator[](const QCborValue &), find(const QCborValue &), contains(const QCborValue &),
-      take(QLatin1String), take(const QString &), take(qint64), insert()
+    \sa value(const QCborValue &), operator[](const QCborValue &), find(const QCborValue &),
+        contains(const QCborValue &), take(QLatin1StringView), take(const QString &),
+        take(qint64), insert()
  */
 
 /*!
@@ -741,7 +749,7 @@ QCborValueRef QCborMap::operator[](const QString & key)
 
     \sa value(const QCborValue &), operator[](const QCborValue &), find(const QCborValue &),
         contains(const QCborValue &)
-        remove(qint64), remove(QLatin1String), remove(const QString &)
+        remove(qint64), remove(QLatin1StringView), remove(const QString &)
  */
 
 /*!
@@ -752,7 +760,7 @@ QCborValueRef QCborMap::operator[](const QString & key)
 
     \sa value(const QCborValue &), operator[](const QCborValue &), find(const QCborValue &),
         remove(const QCborValue &),
-        contains(qint64), remove(QLatin1String), remove(const QString &)
+        contains(qint64), remove(QLatin1StringView), remove(const QString &)
  */
 
 /*!
@@ -777,8 +785,9 @@ QCborValueRef QCborMap::operator[](const QString & key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(const QCborValue &), find(const QCborValue &), contains(const QCborValue &), remove(const QCborValue &),
-        operator[](qint64), operator[](QLatin1String), operator[](const QString &)
+    \sa value(const QCborValue &), find(const QCborValue &), contains(const QCborValue &),
+        remove(const QCborValue &), operator[](qint64), operator[](QLatin1StringView),
+        operator[](const QString &)
  */
 QCborValueRef QCborMap::operator[](const QCborValue &key)
 {
@@ -809,8 +818,8 @@ QCborContainerPrivate::findOrAddMapKey(QCborMap &map, KeyType key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(qint64), operator[](qint64), constFind(qint64), remove(qint64), contains(qint64)
-        value(QLatin1String), value(const QString &), value(const QCborValue &)
+    \sa value(qint64), operator[](qint64), constFind(qint64), remove(qint64), contains(qint64),
+        value(QLatin1StringView), value(const QString &), value(const QCborValue &)
  */
 QCborMap::iterator QCborMap::find(qint64 key)
 {
@@ -820,8 +829,8 @@ QCborMap::iterator QCborMap::find(qint64 key)
 }
 
 /*!
-    \fn QCborMap::iterator QCborMap::find(QLatin1String key)
-    \fn QCborMap::const_iterator QCborMap::find(QLatin1String key) const
+    \fn QCborMap::iterator QCborMap::find(QLatin1StringView key)
+    \fn QCborMap::const_iterator QCborMap::find(QLatin1StringView key) const
     \overload
 
     Returns a map iterator to the key-value pair whose key is \a key, if the
@@ -833,11 +842,11 @@ QCborMap::iterator QCborMap::find(qint64 key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), operator[](QLatin1String), constFind(QLatin1String),
-        remove(QLatin1String), contains(QLatin1String)
+    \sa value(QLatin1StringView), operator[](QLatin1StringView), constFind(QLatin1StringView),
+        remove(QLatin1StringView), contains(QLatin1StringView),
         value(qint64), value(const QString &), value(const QCborValue &)
  */
-QCborMap::iterator QCborMap::find(QLatin1String key)
+QCborMap::iterator QCborMap::find(QLatin1StringView key)
 {
     detach();
     auto it = constFind(key);
@@ -859,8 +868,8 @@ QCborMap::iterator QCborMap::find(QLatin1String key)
     is usually an indication of a problem in the sender.
 
     \sa value(const QString &), operator[](const QString &), constFind(const QString &),
-        remove(const QString &), contains(const QString &)
-        value(qint64), value(QLatin1String), value(const QCborValue &)
+        remove(const QString &), contains(const QString &),
+        value(qint64), value(QLatin1StringView), value(const QCborValue &)
  */
 QCborMap::iterator QCborMap::find(const QString & key)
 {
@@ -884,8 +893,8 @@ QCborMap::iterator QCborMap::find(const QString & key)
     is usually an indication of a problem in the sender.
 
     \sa value(const QCborValue &), operator[](const QCborValue &), constFind(const QCborValue &),
-        remove(const QCborValue &), contains(const QCborValue &)
-        value(qint64), value(QLatin1String), value(const QString &)
+        remove(const QCborValue &), contains(const QCborValue &),
+        value(qint64), value(QLatin1StringView), value(const QString &)
  */
 QCborMap::iterator QCborMap::find(const QCborValue &key)
 {
@@ -907,8 +916,8 @@ QCborMap::iterator QCborMap::find(const QCborValue &key)
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(qint64), operator[](qint64), find(qint64), remove(qint64), contains(qint64)
-        value(QLatin1String), value(const QString &), value(const QCborValue &)
+    \sa value(qint64), operator[](qint64), find(qint64), remove(qint64), contains(qint64),
+        value(QLatin1StringView), value(const QString &), value(const QCborValue &)
  */
 QCborMap::const_iterator QCborMap::constFind(qint64 key) const
 {
@@ -927,11 +936,11 @@ QCborMap::const_iterator QCborMap::constFind(qint64 key) const
     stream with them. They are usually not permitted and having duplicate keys
     is usually an indication of a problem in the sender.
 
-    \sa value(QLatin1String), operator[](QLatin1String), find(QLatin1String),
-        remove(QLatin1String), contains(QLatin1String)
+    \sa value(QLatin1StringView), operator[](QLatin1StringView), find(QLatin1StringView),
+        remove(QLatin1StringView), contains(QLatin1StringView),
         value(qint64), value(const QString &), value(const QCborValue &)
  */
-QCborMap::const_iterator QCborMap::constFind(QLatin1String key) const
+QCborMap::const_iterator QCborMap::constFind(QLatin1StringView key) const
 {
     return d ? d->findCborMapKey(key) : constEnd();
 }
@@ -949,8 +958,8 @@ QCborMap::const_iterator QCborMap::constFind(QLatin1String key) const
     is usually an indication of a problem in the sender.
 
     \sa value(const QString &), operator[](const QString &), find(const QString &),
-        remove(const QString &), contains(const QString &)
-        value(qint64), value(QLatin1String), value(const QCborValue &)
+        remove(const QString &), contains(const QString &),
+        value(qint64), value(QLatin1StringView), value(const QCborValue &)
  */
 QCborMap::const_iterator QCborMap::constFind(const QString &key) const
 {
@@ -971,7 +980,7 @@ QCborMap::const_iterator QCborMap::constFind(const QString &key) const
 
     \sa value(const QCborValue &), operator[](const QCborValue &), find(const QCborValue &),
         remove(const QCborValue &), contains(const QCborValue &),
-        value(qint64), value(QLatin1String), value(const QString &)
+        value(qint64), value(QLatin1StringView), value(const QString &)
  */
 QCborMap::const_iterator QCborMap::constFind(const QCborValue &key) const
 {
@@ -993,7 +1002,7 @@ QCborMap::const_iterator QCborMap::constFind(const QCborValue &key) const
  */
 
 /*!
-    \fn QCborMap::iterator QCborMap::insert(QLatin1String key, const QCborValue &value)
+    \fn QCborMap::iterator QCborMap::insert(QLatin1StringView key, const QCborValue &value)
     \overload
 
     Inserts the key \a key and value \a value into this map and returns a map
@@ -1002,8 +1011,8 @@ QCborMap::const_iterator QCborMap::constFind(const QCborValue &key) const
     If the map already had a key equal to \a key, its value will be overwritten
     by \a value.
 
-    \sa erase(), remove(QLatin1String), value(QLatin1String), operator[](QLatin1String),
-        find(QLatin1String), contains(QLatin1String), take(QLatin1String), extract()
+    \sa erase(), remove(QLatin1StringView), value(QLatin1StringView), operator[](QLatin1StringView),
+        find(QLatin1StringView), contains(QLatin1StringView), take(QLatin1StringView), extract()
  */
 
 /*!
diff --git a/src/corelib/serialization/qcbormap.h b/src/corelib/serialization/qcbormap.h
index 90ad0ae412..c6e71b98ae 100644
--- a/src/corelib/serialization/qcbormap.h
+++ b/src/corelib/serialization/qcbormap.h
@@ -204,7 +204,7 @@ public:
 
     QCborValue value(qint64 key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
-    QCborValue value(QLatin1String key) const
+    QCborValue value(QLatin1StringView key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
     QCborValue value(const QString & key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
@@ -216,7 +216,7 @@ public:
 #endif
     const QCborValue operator[](qint64 key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
-    const QCborValue operator[](QLatin1String key) const
+    const QCborValue operator[](QLatin1StringView key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
     const QCborValue operator[](const QString & key) const
     { const_iterator it = find(key); return it == end() ? QCborValue() : it.value(); }
@@ -227,13 +227,13 @@ public:
     { return operator[](QString::fromUtf8(key, N - 1)); }
 #endif
     QCborValueRef operator[](qint64 key);
-    QCborValueRef operator[](QLatin1String key);
+    QCborValueRef operator[](QLatin1StringView key);
     QCborValueRef operator[](const QString & key);
     QCborValueRef operator[](const QCborValue &key);
 
     QCborValue take(qint64 key)
     { const_iterator it = constFind(key); if (it != constEnd()) return extract(it); return QCborValue(); }
-    QCborValue take(QLatin1String key)
+    QCborValue take(QLatin1StringView key)
     { const_iterator it = constFind(key); if (it != constEnd()) return extract(it); return QCborValue(); }
     QCborValue take(const QString &key)
     { const_iterator it = constFind(key); if (it != constEnd()) return extract(it); return QCborValue(); }
@@ -241,7 +241,7 @@ public:
     { const_iterator it = constFind(key); if (it != constEnd()) return extract(it); return QCborValue(); }
     void remove(qint64 key)
     { const_iterator it = constFind(key); if (it != constEnd()) erase(it); }
-    void remove(QLatin1String key)
+    void remove(QLatin1StringView key)
     { const_iterator it = constFind(key); if (it != constEnd()) erase(it); }
     void remove(const QString & key)
     { const_iterator it = constFind(key); if (it != constEnd()) erase(it); }
@@ -249,7 +249,7 @@ public:
     { const_iterator it = constFind(key); if (it != constEnd()) erase(it); }
     bool contains(qint64 key) const
     { const_iterator it = find(key); return it != end(); }
-    bool contains(QLatin1String key) const
+    bool contains(QLatin1StringView key) const
     { const_iterator it = find(key); return it != end(); }
     bool contains(const QString & key) const
     { const_iterator it = find(key); return it != end(); }
@@ -291,15 +291,15 @@ public:
     bool empty() const { return isEmpty(); }
 
     iterator find(qint64 key);
-    iterator find(QLatin1String key);
+    iterator find(QLatin1StringView key);
     iterator find(const QString & key);
     iterator find(const QCborValue &key);
     const_iterator constFind(qint64 key) const;
-    const_iterator constFind(QLatin1String key) const;
+    const_iterator constFind(QLatin1StringView key) const;
     const_iterator constFind(const QString & key) const;
     const_iterator constFind(const QCborValue &key) const;
     const_iterator find(qint64 key) const { return constFind(key); }
-    const_iterator find(QLatin1String key) const { return constFind(key); }
+    const_iterator find(QLatin1StringView key) const { return constFind(key); }
     const_iterator find(const QString & key) const { return constFind(key); }
     const_iterator find(const QCborValue &key) const { return constFind(key); }
 
@@ -309,7 +309,7 @@ public:
         v = value_;
         return { d.data(), v.i };
     }
-    iterator insert(QLatin1String key, const QCborValue &value_)
+    iterator insert(QLatin1StringView key, const QCborValue &value_)
     {
         QCborValueRef v = operator[](key);  // detaches
         v = value_;
diff --git a/src/corelib/serialization/qcborstreamwriter.cpp b/src/corelib/serialization/qcborstreamwriter.cpp
index d3c0066cca..fe62582461 100644
--- a/src/corelib/serialization/qcborstreamwriter.cpp
+++ b/src/corelib/serialization/qcborstreamwriter.cpp
@@ -466,7 +466,7 @@ void QCborStreamWriter::append(QCborNegativeInteger n)
 
    \sa QCborStreamReader::isString(), QCborStreamReader::readString()
  */
-void QCborStreamWriter::append(QLatin1String str)
+void QCborStreamWriter::append(QLatin1StringView str)
 {
     // We've got Latin-1 but CBOR wants UTF-8, so check if the string is the
     // common subset (US-ASCII).
@@ -639,11 +639,11 @@ void QCborStreamWriter::appendByteString(const char *data, qsizetype len)
    The string pointed to by \a utf8 is expected to be properly encoded UTF-8.
    QCborStreamWriter performs no validation that this is the case.
 
-   Unlike the QLatin1String overload of append(), this function is not limited
+   Unlike the QLatin1StringView overload of append(), this function is not limited
    to 2 GB. However, note that neither QCborStreamReader::readString() nor
    QCborValue support reading CBOR streams with text strings larger than 2 GB.
 
-   \sa append(QLatin1String), append(QStringView),
+   \sa append(QLatin1StringView), append(QStringView),
        QCborStreamReader::isString(), QCborStreamReader::readString()
  */
 void QCborStreamWriter::appendTextString(const char *utf8, qsizetype len)
@@ -663,11 +663,11 @@ void QCborStreamWriter::appendTextString(const char *utf8, qsizetype len)
    The string pointed to by \a str is expected to be properly encoded UTF-8.
    QCborStreamWriter performs no validation that this is the case.
 
-   Unlike the QLatin1String overload of append(), this function is not limited
+   Unlike the QLatin1StringView overload of append(), this function is not limited
    to 2 GB. However, note that neither QCborStreamReader nor QCborValue support
    reading CBOR streams with text strings larger than 2 GB.
 
-   \sa append(QLatin1String), append(QStringView),
+   \sa append(QLatin1StringView), append(QStringView),
        QCborStreamReader::isString(), QCborStreamReader::readString()
  */
 
diff --git a/src/corelib/serialization/qcborstreamwriter.h b/src/corelib/serialization/qcborstreamwriter.h
index 9c2f9e81ab..f8bd7ef3fb 100644
--- a/src/corelib/serialization/qcborstreamwriter.h
+++ b/src/corelib/serialization/qcborstreamwriter.h
@@ -77,7 +77,7 @@ public:
     void append(qint64 i);
     void append(QCborNegativeInteger n);
     void append(const QByteArray &ba)       { appendByteString(ba.constData(), ba.size()); }
-    void append(QLatin1String str);
+    void append(QLatin1StringView str);
     void append(QStringView str);
     void append(QCborTag tag);
     void append(QCborKnownTags tag)         { append(QCborTag(tag)); }
diff --git a/src/corelib/serialization/qcborvalue.cpp b/src/corelib/serialization/qcborvalue.cpp
index e4972a30ba..af8ac55f58 100644
--- a/src/corelib/serialization/qcborvalue.cpp
+++ b/src/corelib/serialization/qcborvalue.cpp
@@ -1395,7 +1395,7 @@ static void encodeToCbor(QCborStreamWriter &writer, const QCborContainerPrivate
                     return writer.append(b->asStringView());
                 return writer.appendTextString(b->byte(), b->len);
             }
-            return writer.append(QLatin1String());
+            return writer.append(QLatin1StringView());
 
         case QCborValue::Array:
         case QCborValue::Map:
@@ -1755,7 +1755,7 @@ QCborValue::QCborValue(QStringView s)
 
     \sa toString(), isString(), isByteArray()
  */
-QCborValue::QCborValue(QLatin1String s)
+QCborValue::QCborValue(QLatin1StringView s)
     : n(0), container(new QCborContainerPrivate), t(String)
 {
     container->append(s);
@@ -2192,7 +2192,7 @@ const QCborValue QCborValue::operator[](const QString &key) const
     \sa operator[](qint64), QCborMap::operator[], QCborMap::value(),
         QCborMap::find()
  */
-const QCborValue QCborValue::operator[](QLatin1String key) const
+const QCborValue QCborValue::operator[](QLatin1StringView key) const
 {
     return QCborContainerPrivate::findCborMapKey(*this, key);
 }
@@ -2349,7 +2349,7 @@ QCborValueRef QCborValue::operator[](const QString &key)
     \sa operator[](qint64), QCborMap::operator[], QCborMap::value(),
         QCborMap::find()
  */
-QCborValueRef QCborValue::operator[](QLatin1String key)
+QCborValueRef QCborValue::operator[](QLatin1StringView key)
 {
     return QCborContainerPrivate::findOrAddMapKey(*this, key);
 }
@@ -2703,7 +2703,7 @@ const QCborValue QCborValueConstRef::operator[](const QString &key) const
     return item[key];
 }
 
-const QCborValue QCborValueConstRef::operator[](const QLatin1String key) const
+const QCborValue QCborValueConstRef::operator[](const QLatin1StringView key) const
 {
     const QCborValue item = d->valueAt(i);
     return item[key];
@@ -2761,7 +2761,7 @@ const QCborValue QCborValueRef::operator[](const QString &key) const
     \sa operator[](qint64), QCborMap::operator[], QCborMap::value(),
         QCborMap::find()
  */
-const QCborValue QCborValueRef::operator[](QLatin1String key) const
+const QCborValue QCborValueRef::operator[](QLatin1StringView key) const
 {
     return QCborValueConstRef::operator[](key);
 }
@@ -2817,7 +2817,7 @@ QCborValueRef QCborValueRef::operator[](const QString &key)
     \sa operator[](qint64), QCborMap::operator[], QCborMap::value(),
         QCborMap::find()
  */
-QCborValueRef QCborValueRef::operator[](QLatin1String key)
+QCborValueRef QCborValueRef::operator[](QLatin1StringView key)
 {
     return QCborContainerPrivate::findOrAddMapKey(*this, key);
 }
diff --git a/src/corelib/serialization/qcborvalue.h b/src/corelib/serialization/qcborvalue.h
index a0383b0d15..80ea167857 100644
--- a/src/corelib/serialization/qcborvalue.h
+++ b/src/corelib/serialization/qcborvalue.h
@@ -150,7 +150,7 @@ public:
     QCborValue(const QString &s);
 #endif
     QCborValue(QStringView s);
-    QCborValue(QLatin1String s);
+    QCborValue(QLatin1StringView s);
 #ifndef QT_NO_CAST_FROM_ASCII
     QT_ASCII_CAST_WARN QCborValue(const char *s) : QCborValue(QString::fromUtf8(s)) {}
 #endif
@@ -253,10 +253,10 @@ public:
     QCborMap toMap(const QCborMap &defaultValue) const;
 
     const QCborValue operator[](const QString &key) const;
-    const QCborValue operator[](QLatin1String key) const;
+    const QCborValue operator[](QLatin1StringView key) const;
     const QCborValue operator[](qint64 key) const;
     QCborValueRef operator[](qint64 key);
-    QCborValueRef operator[](QLatin1String key);
+    QCborValueRef operator[](QLatin1StringView key);
     QCborValueRef operator[](const QString & key);
 
     int compare(const QCborValue &other) const;
@@ -402,7 +402,7 @@ public:
     inline QCborMap toMap(const QCborMap &m) const;
 
     Q_CORE_EXPORT const QCborValue operator[](const QString &key) const;
-    Q_CORE_EXPORT const QCborValue operator[](QLatin1String key) const;
+    Q_CORE_EXPORT const QCborValue operator[](QLatin1StringView key) const;
     Q_CORE_EXPORT const QCborValue operator[](qint64 key) const;
 
     int compare(const QCborValue &other) const
@@ -479,7 +479,7 @@ public:
     { assign(*this, other); return *this; }
 
     QT7_ONLY(Q_CORE_EXPORT) QCborValueRef operator[](qint64 key);
-    QT7_ONLY(Q_CORE_EXPORT) QCborValueRef operator[](QLatin1String key);
+    QT7_ONLY(Q_CORE_EXPORT) QCborValueRef operator[](QLatin1StringView key);
     QT7_ONLY(Q_CORE_EXPORT) QCborValueRef operator[](const QString & key);
 
 #if QT_VERSION < QT_VERSION_CHECK(7, 0, 0) && !defined(QT_BOOTSTRAPPED)
@@ -555,7 +555,7 @@ public:
     QCborMap toMap(const QCborMap &m) const;
 
     const QCborValue operator[](const QString &key) const;
-    const QCborValue operator[](QLatin1String key) const;
+    const QCborValue operator[](QLatin1StringView key) const;
     const QCborValue operator[](qint64 key) const;
 
     int compare(const QCborValue &other) const
diff --git a/src/corelib/serialization/qcborvalue_p.h b/src/corelib/serialization/qcborvalue_p.h
index c59c97b6ec..e7981fbcb8 100644
--- a/src/corelib/serialization/qcborvalue_p.h
+++ b/src/corelib/serialization/qcborvalue_p.h
@@ -115,7 +115,7 @@ struct ByteData
     QString toUtf8String() const    { return QString::fromUtf8(byte(), len); }
 
     QByteArray asByteArrayView() const { return QByteArray::fromRawData(byte(), len); }
-    QLatin1String asLatin1() const  { return QLatin1String(byte(), len); }
+    QLatin1StringView asLatin1() const  { return QLatin1StringView(byte(), len); }
     QUtf8StringView asUtf8StringView() const { return QUtf8StringView(byte(), len); }
     QStringView asStringView() const{ return QStringView(utf16(), len / 2); }
     QString asQStringRaw() const    { return QString::fromRawData(utf16(), len / 2); }
@@ -250,7 +250,7 @@ public:
     {
         appendByteData(str, len, QCborValue::String);
     }
-    void append(QLatin1String s)
+    void append(QLatin1StringView s)
     {
         if (!QtPrivate::isAscii(s))
             return append(QString(s));
@@ -367,7 +367,7 @@ public:
         return e;
     }
 
-    static int compareUtf8(const QtCbor::ByteData *b, const QLatin1String &s)
+    static int compareUtf8(const QtCbor::ByteData *b, QLatin1StringView s)
     {
         return QUtf8::compareUtf8(QByteArrayView(b->byte(), b->len), s);
     }
diff --git a/src/corelib/serialization/qjsondocument.cpp b/src/corelib/serialization/qjsondocument.cpp
index da1d92ba17..d19fe5a781 100644
--- a/src/corelib/serialization/qjsondocument.cpp
+++ b/src/corelib/serialization/qjsondocument.cpp
@@ -462,7 +462,7 @@ const QJsonValue QJsonDocument::operator[](QStringView key) const
     \overload
     \since 5.10
 */
-const QJsonValue QJsonDocument::operator[](QLatin1String key) const
+const QJsonValue QJsonDocument::operator[](QLatin1StringView key) const
 {
     if (!isObject())
         return QJsonValue(QJsonValue::Undefined);
diff --git a/src/corelib/serialization/qjsondocument.h b/src/corelib/serialization/qjsondocument.h
index d262a5e6b6..9e77db91ed 100644
--- a/src/corelib/serialization/qjsondocument.h
+++ b/src/corelib/serialization/qjsondocument.h
@@ -134,7 +134,7 @@ public:
     const QJsonValue operator[](const QString &key) const;
 #endif
     const QJsonValue operator[](QStringView key) const;
-    const QJsonValue operator[](QLatin1String key) const;
+    const QJsonValue operator[](QLatin1StringView key) const;
     const QJsonValue operator[](qsizetype i) const;
 
     bool operator==(const QJsonDocument &other) const;
diff --git a/src/corelib/serialization/qjsonobject.cpp b/src/corelib/serialization/qjsonobject.cpp
index edba60eca7..e1f3b55a33 100644
--- a/src/corelib/serialization/qjsonobject.cpp
+++ b/src/corelib/serialization/qjsonobject.cpp
@@ -342,7 +342,7 @@ QJsonValue QJsonObject::value(QStringView key) const
     \overload
     \since 5.7
 */
-QJsonValue QJsonObject::value(QLatin1String key) const
+QJsonValue QJsonObject::value(QLatin1StringView key) const
 {
     return valueImpl(key);
 }
@@ -387,7 +387,7 @@ QJsonValue QJsonObject::operator [](const QString &key) const
 */
 
 /*!
-    \fn QJsonValue QJsonObject::operator [](QLatin1String key) const
+    \fn QJsonValue QJsonObject::operator [](QLatin1StringView key) const
 
     \overload
     \since 5.7
@@ -426,7 +426,7 @@ QJsonValueRef QJsonObject::operator [](QStringView key)
     \overload
     \since 5.7
 */
-QJsonValueRef QJsonObject::operator [](QLatin1String key)
+QJsonValueRef QJsonObject::operator [](QLatin1StringView key)
 {
     return atImpl(key);
 }
@@ -484,7 +484,7 @@ QJsonObject::iterator QJsonObject::insert(QStringView key, const QJsonValue &val
     \overload
     \since 5.14
 */
-QJsonObject::iterator QJsonObject::insert(QLatin1String key, const QJsonValue &value)
+QJsonObject::iterator QJsonObject::insert(QLatin1StringView key, const QJsonValue &value)
 {
     return insertImpl(key, value);
 }
@@ -549,7 +549,7 @@ void QJsonObject::remove(QStringView key)
     \overload
     \since 5.14
 */
-void QJsonObject::remove(QLatin1String key)
+void QJsonObject::remove(QLatin1StringView key)
 {
     removeImpl(key);
 }
@@ -600,7 +600,7 @@ QJsonValue QJsonObject::take(QStringView key)
     \overload
     \since 5.14
 */
-QJsonValue QJsonObject::take(QLatin1String key)
+QJsonValue QJsonObject::take(QLatin1StringView key)
 {
     return takeImpl(key);
 }
@@ -650,7 +650,7 @@ bool QJsonObject::contains(QStringView key) const
     \overload
     \since 5.7
 */
-bool QJsonObject::contains(QLatin1String key) const
+bool QJsonObject::contains(QLatin1StringView key) const
 {
     return containsImpl(key);
 }
@@ -744,7 +744,7 @@ QJsonObject::iterator QJsonObject::find(QStringView key)
     \overload
     \since 5.7
 */
-QJsonObject::iterator QJsonObject::find(QLatin1String key)
+QJsonObject::iterator QJsonObject::find(QLatin1StringView key)
 {
     return findImpl(key);
 }
@@ -776,7 +776,7 @@ QJsonObject::iterator QJsonObject::findImpl(T key)
     \since 5.14
 */
 
-/*! \fn QJsonObject::const_iterator QJsonObject::find(QLatin1String key) const
+/*! \fn QJsonObject::const_iterator QJsonObject::find(QLatin1StringView key) const
 
     \overload
     \since 5.7
@@ -809,7 +809,7 @@ QJsonObject::const_iterator QJsonObject::constFind(QStringView key) const
     \overload
     \since 5.7
 */
-QJsonObject::const_iterator QJsonObject::constFind(QLatin1String key) const
+QJsonObject::const_iterator QJsonObject::constFind(QLatin1StringView key) const
 {
     return constFindImpl(key);
 }
diff --git a/src/corelib/serialization/qjsonobject.h b/src/corelib/serialization/qjsonobject.h
index 3d22e184b5..b12d0b3342 100644
--- a/src/corelib/serialization/qjsonobject.h
+++ b/src/corelib/serialization/qjsonobject.h
@@ -94,11 +94,11 @@ public:
     QJsonValueRef operator[] (const QString &key);
 #endif
     QJsonValue value(QStringView key) const;
-    QJsonValue value(QLatin1String key) const;
+    QJsonValue value(QLatin1StringView key) const;
     QJsonValue operator[] (QStringView key) const { return value(key); }
-    QJsonValue operator[] (QLatin1String key) const { return value(key); }
+    QJsonValue operator[] (QLatin1StringView key) const { return value(key); }
     QJsonValueRef operator[] (QStringView key);
-    QJsonValueRef operator[] (QLatin1String key);
+    QJsonValueRef operator[] (QLatin1StringView key);
 
 #if QT_STRINGVIEW_LEVEL < 2
     void remove(const QString &key);
@@ -106,11 +106,11 @@ public:
     bool contains(const QString &key) const;
 #endif
     void remove(QStringView key);
-    void remove(QLatin1String key);
+    void remove(QLatin1StringView key);
     QJsonValue take(QStringView key);
-    QJsonValue take(QLatin1String key);
+    QJsonValue take(QLatin1StringView key);
     bool contains(QStringView key) const;
-    bool contains(QLatin1String key) const;
+    bool contains(QLatin1StringView key) const;
 
     bool operator==(const QJsonObject &other) const;
     bool operator!=(const QJsonObject &other) const;
@@ -262,13 +262,13 @@ public:
     iterator insert(const QString &key, const QJsonValue &value);
 #endif
     iterator find(QStringView key);
-    iterator find(QLatin1String key);
+    iterator find(QLatin1StringView key);
     const_iterator find(QStringView key) const { return constFind(key); }
-    const_iterator find(QLatin1String key) const { return constFind(key); }
+    const_iterator find(QLatin1StringView key) const { return constFind(key); }
     const_iterator constFind(QStringView key) const;
-    const_iterator constFind(QLatin1String key) const;
+    const_iterator constFind(QLatin1StringView key) const;
     iterator insert(QStringView key, const QJsonValue &value);
-    iterator insert(QLatin1String key, const QJsonValue &value);
+    iterator insert(QLatin1StringView key, const QJsonValue &value);
 
     // STL compatibility
     typedef QJsonValue mapped_type;
diff --git a/src/corelib/serialization/qjsonparser.cpp b/src/corelib/serialization/qjsonparser.cpp
index d8d0ad9c2e..fbd28934e1 100644
--- a/src/corelib/serialization/qjsonparser.cpp
+++ b/src/corelib/serialization/qjsonparser.cpp
@@ -193,7 +193,7 @@ QString QJsonParseError::errorString() const
 #ifndef QT_BOOTSTRAPPED
     return QCoreApplication::translate("QJsonParseError", sz);
 #else
-    return QLatin1String(sz);
+    return QLatin1StringView(sz);
 #endif
 }
 
diff --git a/src/corelib/serialization/qjsonvalue.cpp b/src/corelib/serialization/qjsonvalue.cpp
index a36ef1d7aa..2ea509c79d 100644
--- a/src/corelib/serialization/qjsonvalue.cpp
+++ b/src/corelib/serialization/qjsonvalue.cpp
@@ -235,7 +235,7 @@ QJsonValue::QJsonValue(const QString &s)
 /*!
     Creates a value of type String, with value \a s.
  */
-QJsonValue::QJsonValue(QLatin1String s)
+QJsonValue::QJsonValue(QLatin1StringView s)
     : value(s)
 {
 }
@@ -826,7 +826,7 @@ const QJsonValue QJsonValue::operator[](QStringView key) const
     \overload
     \since 5.10
 */
-const QJsonValue QJsonValue::operator[](QLatin1String key) const
+const QJsonValue QJsonValue::operator[](QLatin1StringView key) const
 {
     if (!isObject())
         return QJsonValue(QJsonValue::Undefined);
diff --git a/src/corelib/serialization/qjsonvalue.h b/src/corelib/serialization/qjsonvalue.h
index 4d6caf265a..91241e4084 100644
--- a/src/corelib/serialization/qjsonvalue.h
+++ b/src/corelib/serialization/qjsonvalue.h
@@ -75,7 +75,7 @@ public:
     QJsonValue(int n);
     QJsonValue(qint64 v);
     QJsonValue(const QString &s);
-    QJsonValue(QLatin1String s);
+    QJsonValue(QLatin1StringView s);
 #ifndef QT_NO_CAST_FROM_ASCII
     QT_ASCII_CAST_WARN inline QJsonValue(const char *s)
         : QJsonValue(QString::fromUtf8(s)) {}
@@ -127,7 +127,7 @@ public:
     const QJsonValue operator[](const QString &key) const;
 #endif
     const QJsonValue operator[](QStringView key) const;
-    const QJsonValue operator[](QLatin1String key) const;
+    const QJsonValue operator[](QLatin1StringView key) const;
     const QJsonValue operator[](qsizetype i) const;
 
     bool operator==(const QJsonValue &other) const;
@@ -183,7 +183,7 @@ public:
     Q_CORE_EXPORT QJsonObject toObject() const;
 
     const QJsonValue operator[](QStringView key) const { return concrete(*this)[key]; }
-    const QJsonValue operator[](QLatin1String key) const { return concrete(*this)[key]; }
+    const QJsonValue operator[](QLatin1StringView key) const { return concrete(*this)[key]; }
     const QJsonValue operator[](qsizetype i) const { return concrete(*this)[i]; }
 
     inline bool operator==(const QJsonValue &other) const { return concrete(*this) == other; }
@@ -290,7 +290,7 @@ public:
     QJsonObject toObject() const;
 
     const QJsonValue operator[](QStringView key) const { return QJsonValueConstRef::operator[](key); }
-    const QJsonValue operator[](QLatin1String key) const { return QJsonValueConstRef::operator[](key); }
+    const QJsonValue operator[](QLatin1StringView key) const { return QJsonValueConstRef::operator[](key); }
     const QJsonValue operator[](qsizetype i) const { return QJsonValueConstRef::operator[](i); }
 
     inline bool operator==(const QJsonValue &other) const { return QJsonValueConstRef::operator==(other); }
diff --git a/src/corelib/serialization/qtextstream.cpp b/src/corelib/serialization/qtextstream.cpp
index e6ff337182..aaed1a905e 100644
--- a/src/corelib/serialization/qtextstream.cpp
+++ b/src/corelib/serialization/qtextstream.cpp
@@ -744,7 +744,7 @@ inline void QTextStreamPrivate::write(QChar ch)
 /*!
     \internal
 */
-void QTextStreamPrivate::write(QLatin1String data)
+void QTextStreamPrivate::write(QLatin1StringView data)
 {
     if (string) {
         // ### What about seek()??
@@ -880,7 +880,7 @@ void QTextStreamPrivate::putString(const QChar *data, qsizetype len, bool number
 /*!
     \internal
 */
-void QTextStreamPrivate::putString(QLatin1String data, bool number)
+void QTextStreamPrivate::putString(QLatin1StringView data, bool number)
 {
     if (Q_UNLIKELY(params.fieldWidth > data.size())) {
 
@@ -893,7 +893,7 @@ void QTextStreamPrivate::putString(QLatin1String data, bool number)
             if (sign == locale.negativeSign() || sign == locale.positiveSign()) {
                 // write the sign before the padding, then skip it later
                 write(&sign, 1);
-                data = QLatin1String(data.data() + 1, data.size() - 1);
+                data = QLatin1StringView(data.data() + 1, data.size() - 1);
             }
         }
 
@@ -2498,7 +2498,7 @@ QTextStream &QTextStream::operator<<(QStringView string)
     Writes \a string to the stream, and returns a reference to the
     QTextStream.
 */
-QTextStream &QTextStream::operator<<(QLatin1String string)
+QTextStream &QTextStream::operator<<(QLatin1StringView string)
 {
     Q_D(QTextStream);
     CHECK_VALID_STREAM(*this);
diff --git a/src/corelib/serialization/qtextstream.h b/src/corelib/serialization/qtextstream.h
index 33d5b57018..52e1360b66 100644
--- a/src/corelib/serialization/qtextstream.h
+++ b/src/corelib/serialization/qtextstream.h
@@ -181,7 +181,7 @@ public:
     QTextStream &operator<<(double f);
     QTextStream &operator<<(const QString &s);
     QTextStream &operator<<(QStringView s);
-    QTextStream &operator<<(QLatin1String s);
+    QTextStream &operator<<(QLatin1StringView s);
     QTextStream &operator<<(const QByteArray &array);
     QTextStream &operator<<(const char *c);
     QTextStream &operator<<(const void *ptr);
diff --git a/src/corelib/serialization/qtextstream_p.h b/src/corelib/serialization/qtextstream_p.h
index d23c693566..f622b739ff 100644
--- a/src/corelib/serialization/qtextstream_p.h
+++ b/src/corelib/serialization/qtextstream_p.h
@@ -178,14 +178,14 @@ public:
     inline void write(QStringView data) { write(data.begin(), data.length()); }
     inline void write(QChar ch);
     void write(const QChar *data, qsizetype len);
-    void write(QLatin1String data);
+    void write(QLatin1StringView data);
     void writePadding(qsizetype len);
     inline void putString(QStringView string, bool number = false)
     {
         putString(string.constData(), string.length(), number);
     }
     void putString(const QChar *data, qsizetype len, bool number = false);
-    void putString(QLatin1String data, bool number = false);
+    void putString(QLatin1StringView data, bool number = false);
     void putString(QUtf8StringView data, bool number = false);
     inline void putChar(QChar ch);
     void putNumber(qulonglong number, bool negative);
diff --git a/src/corelib/serialization/qxmlstream.cpp b/src/corelib/serialization/qxmlstream.cpp
index 6361beb409..4f9affb2d4 100644
--- a/src/corelib/serialization/qxmlstream.cpp
+++ b/src/corelib/serialization/qxmlstream.cpp
@@ -757,8 +757,8 @@ bool QXmlStreamReader::namespaceProcessing() const
 QString QXmlStreamReader::tokenString() const
 {
     Q_D(const QXmlStreamReader);
-    return QLatin1String(QXmlStreamReader_tokenTypeString_string +
-                         QXmlStreamReader_tokenTypeString_indices[d->type]);
+    return QLatin1StringView(QXmlStreamReader_tokenTypeString_string +
+                             QXmlStreamReader_tokenTypeString_indices[d->type]);
 }
 
 #endif // QT_NO_XMLSTREAMREADER
@@ -1853,22 +1853,27 @@ void QXmlStreamReaderPrivate::parseError()
 
     if (nexpected && nexpected < nmax) {
         //: '<first option>'
-        QString exp_str = QXmlStream::tr("'%1'", "expected").arg(QLatin1String(spell[expected[0]]));
+        QString exp_str = QXmlStream::tr("'%1'", "expected")
+                .arg(QLatin1StringView(spell[expected[0]]));
         if (nexpected == 2) {
             //: <first option>, '<second option>'
-            exp_str = QXmlStream::tr("%1 or '%2'", "expected").arg(exp_str, QLatin1String(spell[expected[1]]));
+            exp_str = QXmlStream::tr("%1 or '%2'", "expected")
+                    .arg(exp_str, QLatin1StringView(spell[expected[1]]));
         } else if (nexpected > 2) {
             int s = 1;
             for (; s < nexpected - 1; ++s) {
                 //: <options so far>, '<next option>'
-                exp_str = QXmlStream::tr("%1, '%2'", "expected").arg(exp_str, QLatin1String(spell[expected[s]]));
+                exp_str = QXmlStream::tr("%1, '%2'", "expected")
+                        .arg(exp_str, QLatin1StringView(spell[expected[s]]));
             }
             //: <options so far>, or '<final option>'
-            exp_str = QXmlStream::tr("%1, or '%2'", "expected").arg(exp_str, QLatin1String(spell[expected[s]]));
+            exp_str = QXmlStream::tr("%1, or '%2'", "expected")
+                    .arg(exp_str, QLatin1StringView(spell[expected[s]]));
         }
-        error_message = QXmlStream::tr("Expected %1, but got '%2'.").arg(exp_str, QLatin1String(spell[token]));
+        error_message = QXmlStream::tr("Expected %1, but got '%2'.")
+                .arg(exp_str, QLatin1StringView(spell[token]));
     } else {
-        error_message = QXmlStream::tr("Unexpected '%1'.").arg(QLatin1String(spell[token]));
+        error_message = QXmlStream::tr("Unexpected '%1'.").arg(QLatin1StringView(spell[token]));
     }
 
     raiseWellFormedError(error_message);
@@ -2572,7 +2577,7 @@ QStringView QXmlStreamAttributes::value(const QString &namespaceUri, const QStri
   described with \a namespaceUri, or an empty string reference if the
   attribute is not defined. The \a namespaceUri can be empty.
  */
-QStringView QXmlStreamAttributes::value(const QString &namespaceUri, QLatin1String name) const
+QStringView QXmlStreamAttributes::value(const QString &namespaceUri, QLatin1StringView name) const
 {
     for (const QXmlStreamAttribute &attribute : *this) {
         if (attribute.name() == name && attribute.namespaceUri() == namespaceUri)
@@ -2586,7 +2591,8 @@ QStringView QXmlStreamAttributes::value(const QString &namespaceUri, QLatin1Stri
   described with \a namespaceUri, or an empty string reference if the
   attribute is not defined. The \a namespaceUri can be empty.
  */
-QStringView QXmlStreamAttributes::value(QLatin1String namespaceUri, QLatin1String name) const
+QStringView QXmlStreamAttributes::value(QLatin1StringView namespaceUri,
+                                        QLatin1StringView name) const
 {
     for (const QXmlStreamAttribute &attribute : *this) {
         if (attribute.name() == name && attribute.namespaceUri() == namespaceUri)
@@ -2628,7 +2634,7 @@ QStringView QXmlStreamAttributes::value(const QString &qualifiedName) const
   use qualified names, but a resolved namespaceUri and the attribute's
   local name.
  */
-QStringView QXmlStreamAttributes::value(QLatin1String qualifiedName) const
+QStringView QXmlStreamAttributes::value(QLatin1StringView qualifiedName) const
 {
     for (const QXmlStreamAttribute &attribute : *this) {
         if (attribute.qualifiedName() == qualifiedName)
@@ -3765,7 +3771,7 @@ void QXmlStreamWriter::writeCurrentToken(const QXmlStreamReader &reader)
 */
 
 /*!
- \fn bool QXmlStreamAttributes::hasAttribute(QLatin1String qualifiedName) const
+ \fn bool QXmlStreamAttributes::hasAttribute(QLatin1StringView qualifiedName) const
  \overload
  \since 4.5
 */
diff --git a/src/corelib/serialization/qxmlstream.h b/src/corelib/serialization/qxmlstream.h
index ed2da2e513..6ed71fe66f 100644
--- a/src/corelib/serialization/qxmlstream.h
+++ b/src/corelib/serialization/qxmlstream.h
@@ -112,10 +112,10 @@ class QXmlStreamAttributes : public QList<QXmlStreamAttribute>
 public:
     inline QXmlStreamAttributes() {}
     Q_CORE_EXPORT QStringView value(const QString &namespaceUri, const QString &name) const;
-    Q_CORE_EXPORT QStringView value(const QString &namespaceUri, QLatin1String name) const;
-    Q_CORE_EXPORT QStringView value(QLatin1String namespaceUri, QLatin1String name) const;
+    Q_CORE_EXPORT QStringView value(const QString &namespaceUri, QLatin1StringView name) const;
+    Q_CORE_EXPORT QStringView value(QLatin1StringView namespaceUri, QLatin1StringView name) const;
     Q_CORE_EXPORT QStringView value(const QString &qualifiedName) const;
-    Q_CORE_EXPORT QStringView value(QLatin1String qualifiedName) const;
+    Q_CORE_EXPORT QStringView value(QLatin1StringView qualifiedName) const;
     Q_CORE_EXPORT void append(const QString &namespaceUri, const QString &name, const QString &value);
     Q_CORE_EXPORT void append(const QString &qualifiedName, const QString &value);
 
@@ -124,7 +124,7 @@ public:
         return !value(qualifiedName).isNull();
     }
 
-    inline bool hasAttribute(QLatin1String qualifiedName) const
+    inline bool hasAttribute(QLatin1StringView qualifiedName) const
     {
         return !value(qualifiedName).isNull();
     }
diff --git a/src/corelib/serialization/qxmlstream_p.h b/src/corelib/serialization/qxmlstream_p.h
index 609e799b48..30f824b312 100644
--- a/src/corelib/serialization/qxmlstream_p.h
+++ b/src/corelib/serialization/qxmlstream_p.h
@@ -255,7 +255,7 @@ public:
         Entity(const QString &name, const QString &value)
           :  name(name), value(value), external(false), unparsed(false), literal(false),
              hasBeenParsed(false), isCurrentlyReferenced(false){}
-        static inline Entity createLiteral(QLatin1String name, QLatin1String value)
+        static inline Entity createLiteral(QLatin1StringView name, QLatin1StringView value)
             { Entity result(name, value); result.literal = result.hasBeenParsed = true; return result; }
         QString name, value;
         uint external : 1;
diff --git a/src/corelib/text/qanystringview.h b/src/corelib/text/qanystringview.h
index 6cdc58ddbf..102a5b63ae 100644
--- a/src/corelib/text/qanystringview.h
+++ b/src/corelib/text/qanystringview.h
@@ -189,7 +189,7 @@ public:
     // defined in qstring.h
     inline QAnyStringView(const QByteArray &str) noexcept; // TODO: Should we have this at all? Remove?
     inline QAnyStringView(const QString &str) noexcept;
-    inline constexpr QAnyStringView(QLatin1String str) noexcept;
+    inline constexpr QAnyStringView(QLatin1StringView str) noexcept;
 
     // defined in qstringbuilder.h
     template <typename A, typename B>
@@ -308,7 +308,7 @@ private:
     { return Q_ASSERT(isUtf16()), QStringView{m_data_utf16, size()}; }
     [[nodiscard]] constexpr q_no_char8_t::QUtf8StringView asUtf8StringView() const
     { return Q_ASSERT(isUtf8()), q_no_char8_t::QUtf8StringView{m_data_utf8, size()}; }
-    [[nodiscard]] inline constexpr QLatin1String asLatin1StringView() const;
+    [[nodiscard]] inline constexpr QLatin1StringView asLatin1StringView() const;
     [[nodiscard]] constexpr size_t charSize() const noexcept { return isUtf16() ? 2 : 1; }
     Q_ALWAYS_INLINE constexpr void verify(qsizetype pos, qsizetype n = 0) const
     {
diff --git a/src/corelib/text/qanystringview.qdoc b/src/corelib/text/qanystringview.qdoc
index 743e389a8f..e7c097a0ec 100644
--- a/src/corelib/text/qanystringview.qdoc
+++ b/src/corelib/text/qanystringview.qdoc
@@ -61,13 +61,13 @@
     function to accept a wide variety of string data sources. One
     function accepting QAnyStringView thus replaces five function
     overloads (taking QString, \c{(const QChar*, int)},
-    QUtf8StringView, QLatin1String (but see above), and QChar), while
+    QUtf8StringView, QLatin1StringView (but see above), and QChar), while
     at the same time enabling even more string data sources to be
     passed to the function, such as \c{u8"Hello World"}, a \c char8_t
     string literal.
 
     Like elsewhere in Qt, QAnyStringView assumes \c char data is encoded
-    in UTF-8, unless it is presented as a QLatin1String.
+    in UTF-8, unless it is presented as a QLatin1StringView.
 
     QAnyStringViews should be passed by value, not by reference-to-const:
     \snippet code/src_corelib_text_qanystringview.cpp 0
@@ -97,7 +97,7 @@
     \endlist
 
     The 8-bit character types are interpreted as UTF-8 data (except when
-    presented as a QLatin1String) while the 16-bit character types are
+    presented as a QLatin1StringView) while the 16-bit character types are
     interpreted as UTF-16 data in host byte order (the same as QString).
 
     \section2 Sizes and Sub-Strings
diff --git a/src/corelib/text/qbytearrayview.h b/src/corelib/text/qbytearrayview.h
index 8d3ff0be67..07fb018737 100644
--- a/src/corelib/text/qbytearrayview.h
+++ b/src/corelib/text/qbytearrayview.h
@@ -98,7 +98,7 @@ struct IsContainerCompatibleWithQByteArrayView<T, std::enable_if_t<
                 // Don't make an accidental copy constructor
                 std::negation<std::is_same<std::decay_t<T>, QByteArrayView>>>>> : std::true_type {};
 
-// Used by QLatin1String too
+// Used by QLatin1StringView too
 template <typename Char>
 static constexpr qsizetype lengthHelperPointer(const Char *data) noexcept
 {
diff --git a/src/corelib/text/qchar.cpp b/src/corelib/text/qchar.cpp
index f9ada412c0..c851376c1a 100644
--- a/src/corelib/text/qchar.cpp
+++ b/src/corelib/text/qchar.cpp
@@ -68,7 +68,7 @@ QT_BEGIN_NAMESPACE
 
     This class is only useful to construct a QChar with 8-bit character.
 
-    \sa QChar, QLatin1String, QString
+    \sa QChar, QLatin1StringView, QString
 */
 
 /*!
diff --git a/src/corelib/text/qlocale.cpp b/src/corelib/text/qlocale.cpp
index 73a41112a3..c1491f0f15 100644
--- a/src/corelib/text/qlocale.cpp
+++ b/src/corelib/text/qlocale.cpp
@@ -217,46 +217,46 @@ QLocale::Territory QLocalePrivate::codeToTerritory(QStringView code) noexcept
     return QLocale::AnyTerritory;
 }
 
-QLatin1String QLocalePrivate::languageToCode(QLocale::Language language,
-                                             QLocale::LanguageCodeTypes codeTypes)
+QLatin1StringView QLocalePrivate::languageToCode(QLocale::Language language,
+                                                 QLocale::LanguageCodeTypes codeTypes)
 {
     if (language == QLocale::AnyLanguage || language > QLocale::LastLanguage)
-        return QLatin1String();
+        return {};
     if (language == QLocale::C)
         return "C"_L1;
 
     const LanguageCodeEntry &i = languageCodeList[language];
 
     if (codeTypes.testFlag(QLocale::ISO639Part1) && i.part1.isValid())
-        return QLatin1String(i.part1.code, 2);
+        return QLatin1StringView(i.part1.code, 2);
 
     if (codeTypes.testFlag(QLocale::ISO639Part2B) && i.part2B.isValid())
-        return QLatin1String(i.part2B.code, 3);
+        return QLatin1StringView(i.part2B.code, 3);
 
     if (codeTypes.testFlag(QLocale::ISO639Part2T) && i.part2T.isValid())
-        return QLatin1String(i.part2T.code, 3);
+        return QLatin1StringView(i.part2T.code, 3);
 
     if (codeTypes.testFlag(QLocale::ISO639Part3))
-        return QLatin1String(i.part3.code, 3);
+        return QLatin1StringView(i.part3.code, 3);
 
-    return QLatin1String();
+    return {};
 }
 
-QLatin1String QLocalePrivate::scriptToCode(QLocale::Script script)
+QLatin1StringView QLocalePrivate::scriptToCode(QLocale::Script script)
 {
     if (script == QLocale::AnyScript || script > QLocale::LastScript)
-        return QLatin1String();
+        return {};
     const unsigned char *c = script_code_list + 4 * script;
-    return QLatin1String(reinterpret_cast<const char *>(c), 4);
+    return QLatin1StringView(reinterpret_cast<const char *>(c), 4);
 }
 
-QLatin1String QLocalePrivate::territoryToCode(QLocale::Territory territory)
+QLatin1StringView QLocalePrivate::territoryToCode(QLocale::Territory territory)
 {
     if (territory == QLocale::AnyTerritory || territory > QLocale::LastTerritory)
-        return QLatin1String();
+        return {};
 
     const unsigned char *c = territory_code_list + 3 * territory;
-    return QLatin1String(reinterpret_cast<const char*>(c), c[2] == 0 ? 2 : 3);
+    return QLatin1StringView(reinterpret_cast<const char*>(c), c[2] == 0 ? 2 : 3);
 }
 
 namespace {
@@ -1553,7 +1553,7 @@ QString QLocale::languageToString(Language language)
 {
     if (language > QLocale::LastLanguage)
         return "Unknown"_L1;
-    return QLatin1String(language_name_list + language_name_index[language]);
+    return QLatin1StringView(language_name_list + language_name_index[language]);
 }
 
 /*!
@@ -1567,7 +1567,7 @@ QString QLocale::territoryToString(QLocale::Territory territory)
 {
     if (territory > QLocale::LastTerritory)
         return "Unknown"_L1;
-    return QLatin1String(territory_name_list + territory_name_index[territory]);
+    return QLatin1StringView(territory_name_list + territory_name_index[territory]);
 }
 
 #if QT_DEPRECATED_SINCE(6, 6)
@@ -1595,7 +1595,7 @@ QString QLocale::scriptToString(QLocale::Script script)
 {
     if (script > QLocale::LastScript)
         return "Unknown"_L1;
-    return QLatin1String(script_name_list + script_name_index[script]);
+    return QLatin1StringView(script_name_list + script_name_index[script]);
 }
 
 #if QT_STRINGVIEW_LEVEL < 2
diff --git a/src/corelib/text/qlocale_p.h b/src/corelib/text/qlocale_p.h
index 1d10e0b292..679bd136e9 100644
--- a/src/corelib/text/qlocale_p.h
+++ b/src/corelib/text/qlocale_p.h
@@ -419,22 +419,22 @@ public:
 
     [[nodiscard]] QByteArray bcp47Name(char separator = '-') const;
 
-    [[nodiscard]] inline QLatin1String
+    [[nodiscard]] inline QLatin1StringView
     languageCode(QLocale::LanguageCodeTypes codeTypes = QLocale::AnyLanguageCode) const
     {
         return languageToCode(QLocale::Language(m_data->m_language_id), codeTypes);
     }
-    [[nodiscard]] inline QLatin1String scriptCode() const
+    [[nodiscard]] inline QLatin1StringView scriptCode() const
     { return scriptToCode(QLocale::Script(m_data->m_script_id)); }
-    [[nodiscard]] inline QLatin1String territoryCode() const
+    [[nodiscard]] inline QLatin1StringView territoryCode() const
     { return territoryToCode(QLocale::Territory(m_data->m_territory_id)); }
 
     [[nodiscard]] static const QLocalePrivate *get(const QLocale &l) { return l.d; }
-    [[nodiscard]] static QLatin1String
+    [[nodiscard]] static QLatin1StringView
     languageToCode(QLocale::Language language,
                    QLocale::LanguageCodeTypes codeTypes = QLocale::AnyLanguageCode);
-    [[nodiscard]] static QLatin1String scriptToCode(QLocale::Script script);
-    [[nodiscard]] static QLatin1String territoryToCode(QLocale::Territory territory);
+    [[nodiscard]] static QLatin1StringView scriptToCode(QLocale::Script script);
+    [[nodiscard]] static QLatin1StringView territoryToCode(QLocale::Territory territory);
     [[nodiscard]] static QLocale::Language
     codeToLanguage(QStringView code,
                    QLocale::LanguageCodeTypes codeTypes = QLocale::AnyLanguageCode) noexcept;
diff --git a/src/corelib/text/qlocale_tools.cpp b/src/corelib/text/qlocale_tools.cpp
index 97c91dd3ee..8259878448 100644
--- a/src/corelib/text/qlocale_tools.cpp
+++ b/src/corelib/text/qlocale_tools.cpp
@@ -629,7 +629,7 @@ QString qdtoa(qreal d, int *decpt, int *sign)
     if (decpt)
         *decpt = nonNullDecpt;
 
-    return QLatin1String(result, length);
+    return QLatin1StringView(result, length);
 }
 
 static QLocaleData::DoubleForm resolveFormat(int precision, int decpt, qsizetype length)
@@ -706,7 +706,7 @@ static T dtoString(double d, QLocaleData::DoubleForm form, int precision, bool u
     int length = 0;
     int decpt = 0;
     qt_doubleToAscii(d, form, precision, buffer.data(), buffer.length(), negative, length, decpt);
-    QLatin1String view(buffer.data(), buffer.data() + length);
+    QLatin1StringView view(buffer.data(), length);
     const bool succinct = form == QLocaleData::DFSignificantDigits;
     qsizetype total = (negative ? 1 : 0) + length;
     if (qIsFinite(d)) {
diff --git a/src/corelib/text/qstringbuilder.cpp b/src/corelib/text/qstringbuilder.cpp
index dcb3644fb0..4ede4cc876 100644
--- a/src/corelib/text/qstringbuilder.cpp
+++ b/src/corelib/text/qstringbuilder.cpp
@@ -74,7 +74,7 @@ QT_BEGIN_NAMESPACE
     \list
     \li QString, (since 5.10:) QStringView
     \li QChar, QLatin1Char, (since 5.10:) \c char16_t,
-    \li QLatin1String,
+    \li QLatin1StringView,
     \li (since 5.10:) \c{const char16_t[]} (\c{u"foo"}),
     \li QByteArray, \c char, \c{const char[]}.
     \endlist
@@ -93,7 +93,7 @@ QT_BEGIN_NAMESPACE
     if there are three or more of them, and performs equally well in other
     cases.
 
-    \sa QLatin1String, QString
+    \sa QLatin1StringView, QString
 */
 
 /*! \fn template <typename A, typename B> QStringBuilder<A, B>::QStringBuilder(const A &a, const B &b)
@@ -107,7 +107,7 @@ QT_BEGIN_NAMESPACE
     takes a QString parameter.
 
     This function is usable with arguments of type \c QString,
-    \c QLatin1String,
+    \c QLatin1StringView,
     \c QChar, \c QLatin1Char, and \c char.
 */
 
diff --git a/src/corelib/text/qstringbuilder.h b/src/corelib/text/qstringbuilder.h
index f5219232b1..3087714149 100644
--- a/src/corelib/text/qstringbuilder.h
+++ b/src/corelib/text/qstringbuilder.h
@@ -63,7 +63,7 @@ protected:
     {
         *out++ = QLatin1Char(a);
     }
-    static void appendLatin1To(QLatin1String in, QChar *out) noexcept;
+    static void appendLatin1To(QLatin1StringView in, QChar *out) noexcept;
 };
 
 template <typename T> struct QConcatenable {};
@@ -250,18 +250,18 @@ template <> struct QConcatenable<QChar::SpecialCharacter> : private QAbstractCon
     { *out++ = c; }
 };
 
-template <> struct QConcatenable<QLatin1String> : private QAbstractConcatenable
+template <> struct QConcatenable<QLatin1StringView> : private QAbstractConcatenable
 {
-    typedef QLatin1String type;
+    typedef QLatin1StringView type;
     typedef QString ConvertTo;
     enum { ExactSize = true };
-    static qsizetype size(const QLatin1String a) { return a.size(); }
-    static inline void appendTo(const QLatin1String a, QChar *&out)
+    static qsizetype size(const QLatin1StringView a) { return a.size(); }
+    static inline void appendTo(const QLatin1StringView a, QChar *&out)
     {
         appendLatin1To(a, out);
         out += a.size();
     }
-    static inline void appendTo(const QLatin1String a, char *&out)
+    static inline void appendTo(const QLatin1StringView a, char *&out)
     {
         if (const char *data = a.data()) {
             memcpy(out, data, a.size());
diff --git a/src/corelib/text/qstringlist.cpp b/src/corelib/text/qstringlist.cpp
index 687c83b8ab..315f7c5396 100644
--- a/src/corelib/text/qstringlist.cpp
+++ b/src/corelib/text/qstringlist.cpp
@@ -353,7 +353,7 @@ bool QtPrivate::QStringList_contains(const QStringList *that, QStringView str,
 }
 
 /*!
-    \fn bool QStringList::contains(QLatin1String str, Qt::CaseSensitivity cs) const
+    \fn bool QStringList::contains(QLatin1StringView str, Qt::CaseSensitivity cs) const
     \overload
     \since 5.10
 
@@ -363,7 +363,7 @@ bool QtPrivate::QStringList_contains(const QStringList *that, QStringView str,
 
     \sa indexOf(), lastIndexOf(), QString::contains()
  */
-bool QtPrivate::QStringList_contains(const QStringList *that, QLatin1String str,
+bool QtPrivate::QStringList_contains(const QStringList *that, QLatin1StringView str,
                                      Qt::CaseSensitivity cs)
 {
     return stringList_contains(*that, str, cs);
@@ -509,11 +509,11 @@ QString QtPrivate::QStringList_join(const QStringList *that, const QChar *sep, q
 }
 
 /*!
-    \fn QString QStringList::join(QLatin1String separator) const
+    \fn QString QStringList::join(QLatin1StringView separator) const
     \since 5.8
     \overload join()
 */
-QString QtPrivate::QStringList_join(const QStringList &list, QLatin1String sep)
+QString QtPrivate::QStringList_join(const QStringList &list, QLatin1StringView sep)
 {
     QString result;
     if (!list.isEmpty()) {
diff --git a/src/corelib/text/qstringlist.h b/src/corelib/text/qstringlist.h
index 5ec95036be..b9fc5fc6fa 100644
--- a/src/corelib/text/qstringlist.h
+++ b/src/corelib/text/qstringlist.h
@@ -63,11 +63,11 @@ namespace QtPrivate {
     qsizetype Q_CORE_EXPORT QStringList_removeDuplicates(QStringList *that);
     QString Q_CORE_EXPORT QStringList_join(const QStringList *that, QStringView sep);
     QString Q_CORE_EXPORT QStringList_join(const QStringList *that, const QChar *sep, qsizetype seplen);
-    Q_CORE_EXPORT QString QStringList_join(const QStringList &list, QLatin1String sep);
+    Q_CORE_EXPORT QString QStringList_join(const QStringList &list, QLatin1StringView sep);
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, QStringView str,
                                                Qt::CaseSensitivity cs);
     bool Q_CORE_EXPORT QStringList_contains(const QStringList *that, QStringView str, Qt::CaseSensitivity cs);
-    bool Q_CORE_EXPORT QStringList_contains(const QStringList *that, QLatin1String str, Qt::CaseSensitivity cs);
+    bool Q_CORE_EXPORT QStringList_contains(const QStringList *that, QLatin1StringView str, Qt::CaseSensitivity cs);
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, QStringView before, QStringView after,
                                       Qt::CaseSensitivity cs);
 
@@ -109,7 +109,7 @@ public:
 
     inline QString join(QStringView sep) const
     { return QtPrivate::QStringList_join(self(), sep); }
-    inline QString join(QLatin1String sep) const
+    inline QString join(QLatin1StringView sep) const
     { return QtPrivate::QStringList_join(*self(), sep); }
     inline QString join(QChar sep) const
     { return QtPrivate::QStringList_join(self(), &sep, 1); }
@@ -147,7 +147,7 @@ public:
     using QListSpecialMethodsBase<QString>::indexOf;
     using QListSpecialMethodsBase<QString>::lastIndexOf;
 
-    inline bool contains(QLatin1String str, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
+    inline bool contains(QLatin1StringView str, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::QStringList_contains(self(), str, cs); }
     inline bool contains(QStringView str, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::QStringList_contains(self(), str, cs); }
diff --git a/src/corelib/text/qstringtokenizer.cpp b/src/corelib/text/qstringtokenizer.cpp
index cad70c6718..5e3512628f 100644
--- a/src/corelib/text/qstringtokenizer.cpp
+++ b/src/corelib/text/qstringtokenizer.cpp
@@ -73,7 +73,7 @@ QT_BEGIN_NAMESPACE
     Argument Deduction (CTAD), you may write
     \c{QStringTokenizer{string, separator}} (without template
     arguments).  If you can't use C++17 CTAD, you must use the
-    QStringView::split() or QLatin1String::split() member functions
+    QStringView::split() or QLatin1StringView::split() member functions
     and store the return value only in \c{auto} variables:
 
     \code
@@ -149,7 +149,7 @@ QT_BEGIN_NAMESPACE
 /*!
     \typealias QStringTokenizer::value_type
 
-    Alias for \c{const QStringView} or \c{const QLatin1String},
+    Alias for \c{const QStringView} or \c{const QLatin1StringView},
     depending on the tokenizer's \c Haystack template argument.
 */
 
diff --git a/src/corelib/text/qstringtokenizer.h b/src/corelib/text/qstringtokenizer.h
index 0b98f0646f..4fe8714b97 100644
--- a/src/corelib/text/qstringtokenizer.h
+++ b/src/corelib/text/qstringtokenizer.h
@@ -168,7 +168,7 @@ namespace Tok {
 
     template <typename String> struct ViewForImpl {};
     template <> struct ViewForImpl<QStringView>   { using type = QStringView; };
-    template <> struct ViewForImpl<QLatin1String> { using type = QLatin1String; };
+    template <> struct ViewForImpl<QLatin1StringView> { using type = QLatin1StringView; };
     template <> struct ViewForImpl<QChar>         { using type = QChar; };
     template <> struct ViewForImpl<QString>     : ViewForImpl<QStringView> {};
     template <> struct ViewForImpl<QLatin1Char> : ViewForImpl<QChar> {};
@@ -185,7 +185,7 @@ namespace Tok {
 #endif
 
     // This metafunction maps a StringLike to a View (currently, QChar,
-    // QStringView, QLatin1String). This is what QStringTokenizerBase
+    // QStringView, QLatin1StringView). This is what QStringTokenizerBase
     // operates on. QStringTokenizer adds pinning to keep rvalues alive
     // for the duration of the algorithm.
     template <typename String>
diff --git a/src/corelib/text/qstringview.cpp b/src/corelib/text/qstringview.cpp
index ef33ebf43e..83fb6b8b4f 100644
--- a/src/corelib/text/qstringview.cpp
+++ b/src/corelib/text/qstringview.cpp
@@ -87,11 +87,11 @@ QT_BEGIN_NAMESPACE
             QChar constructor by itself.
         \li \e QString: if you store an unmodified copy of the string and thus would
             like to take advantage of QString's implicit sharing.
-        \li QLatin1String: if you can implement the function without converting the
-            QLatin1String to UTF-16 first; users expect a function overloaded on
-            QLatin1String to perform strictly less memory allocations than the
+        \li QLatin1StringView: if you can implement the function without converting the
+            QLatin1StringView to UTF-16 first; users expect a function overloaded on
+            QLatin1StringView to perform strictly less memory allocations than the
             semantically equivalent call of the QStringView version, involving
-            construction of a QString from the QLatin1String.
+            construction of a QString from the QLatin1StringView.
     \endlist
 
     QStringView can also be used as the return value of a function. If you call a
@@ -564,7 +564,7 @@ QT_BEGIN_NAMESPACE
     second of the \a args the \c{%N} with the next-lowest \c{N} etc.
 
     \c Args can consist of anything that implicitly converts to QString,
-    QStringView or QLatin1String.
+    QStringView or QLatin1StringView.
 
     In addition, the following types are also supported: QChar, QLatin1Char.
 
@@ -779,7 +779,7 @@ QT_BEGIN_NAMESPACE
 */
 
 /*!
-    \fn int QStringView::compare(QLatin1String l1, Qt::CaseSensitivity cs) const
+    \fn int QStringView::compare(QLatin1StringView l1, Qt::CaseSensitivity cs) const
     \fn int QStringView::compare(QChar ch) const
     \fn int QStringView::compare(QChar ch, Qt::CaseSensitivity cs) const
     \since 5.15
@@ -823,7 +823,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn bool QStringView::startsWith(QStringView str, Qt::CaseSensitivity cs) const
-    \fn bool QStringView::startsWith(QLatin1String l1, Qt::CaseSensitivity cs) const
+    \fn bool QStringView::startsWith(QLatin1StringView l1, Qt::CaseSensitivity cs) const
     \fn bool QStringView::startsWith(QChar ch) const
     \fn bool QStringView::startsWith(QChar ch, Qt::CaseSensitivity cs) const
 
@@ -839,7 +839,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn bool QStringView::endsWith(QStringView str, Qt::CaseSensitivity cs) const
-    \fn bool QStringView::endsWith(QLatin1String l1, Qt::CaseSensitivity cs) const
+    \fn bool QStringView::endsWith(QLatin1StringView l1, Qt::CaseSensitivity cs) const
     \fn bool QStringView::endsWith(QChar ch) const
     \fn bool QStringView::endsWith(QChar ch, Qt::CaseSensitivity cs) const
 
@@ -855,7 +855,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn qsizetype QStringView::indexOf(QStringView str, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
-    \fn qsizetype QStringView::indexOf(QLatin1String l1, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
+    \fn qsizetype QStringView::indexOf(QLatin1StringView l1, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
     \fn qsizetype QStringView::indexOf(QChar c, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
     \since 5.14
 
@@ -874,7 +874,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn bool QStringView::contains(QStringView str, Qt::CaseSensitivity cs) const
-    \fn bool QStringView::contains(QLatin1String l1, Qt::CaseSensitivity cs) const
+    \fn bool QStringView::contains(QLatin1StringView l1, Qt::CaseSensitivity cs) const
     \fn bool QStringView::contains(QChar c, Qt::CaseSensitivity cs) const
     \since 5.14
 
@@ -889,7 +889,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn qsizetype QStringView::lastIndexOf(QStringView str, qsizetype from, Qt::CaseSensitivity cs) const
-    \fn qsizetype QStringView::lastIndexOf(QLatin1String l1, qsizetype from, Qt::CaseSensitivity cs) const
+    \fn qsizetype QStringView::lastIndexOf(QLatin1StringView l1, qsizetype from, Qt::CaseSensitivity cs) const
     \fn qsizetype QStringView::lastIndexOf(QChar c, qsizetype from, Qt::CaseSensitivity cs) const
     \since 5.14
 
@@ -915,7 +915,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \fn qsizetype QStringView::lastIndexOf(QStringView str, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
-    \fn qsizetype QStringView::lastIndexOf(QLatin1String l1, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
+    \fn qsizetype QStringView::lastIndexOf(QLatin1StringView l1, Qt::CaseSensitivity cs = Qt::CaseSensitive) const
     \since 6.2
     \overload lastIndexOf()
 
@@ -1168,7 +1168,7 @@ QT_BEGIN_NAMESPACE
 */
 
 /*!
-    \fn qsizetype QStringView::count(QLatin1String l1, Qt::CaseSensitivity cs) const noexcept
+    \fn qsizetype QStringView::count(QLatin1StringView l1, Qt::CaseSensitivity cs) const noexcept
 
     \since 6.4
     \overload count()
diff --git a/src/corelib/text/qstringview.h b/src/corelib/text/qstringview.h
index 6ca19e927f..194a8280c9 100644
--- a/src/corelib/text/qstringview.h
+++ b/src/corelib/text/qstringview.h
@@ -303,7 +303,7 @@ public:
 
     [[nodiscard]] int compare(QStringView other, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::compareStrings(*this, other, cs); }
-    [[nodiscard]] inline int compare(QLatin1String other, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline int compare(QLatin1StringView other, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
     [[nodiscard]] constexpr int compare(QChar c) const noexcept
     { return size() >= 1 ? compare_single_char_helper(*utf16() - c.unicode()) : -1; }
     [[nodiscard]] int compare(QChar c, Qt::CaseSensitivity cs) const noexcept
@@ -313,7 +313,7 @@ public:
 
     [[nodiscard]] bool startsWith(QStringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::startsWith(*this, s, cs); }
-    [[nodiscard]] inline bool startsWith(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline bool startsWith(QLatin1StringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
     [[nodiscard]] bool startsWith(QChar c) const noexcept
     { return !empty() && front() == c; }
     [[nodiscard]] bool startsWith(QChar c, Qt::CaseSensitivity cs) const noexcept
@@ -321,7 +321,7 @@ public:
 
     [[nodiscard]] bool endsWith(QStringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::endsWith(*this, s, cs); }
-    [[nodiscard]] inline bool endsWith(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline bool endsWith(QLatin1StringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
     [[nodiscard]] bool endsWith(QChar c) const noexcept
     { return !empty() && back() == c; }
     [[nodiscard]] bool endsWith(QChar c, Qt::CaseSensitivity cs) const noexcept
@@ -331,19 +331,19 @@ public:
     { return QtPrivate::findString(*this, from, QStringView(&c, 1), cs); }
     [[nodiscard]] qsizetype indexOf(QStringView s, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::findString(*this, from, s, cs); }
-    [[nodiscard]] inline qsizetype indexOf(QLatin1String s, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline qsizetype indexOf(QLatin1StringView s, qsizetype from = 0, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
 
     [[nodiscard]] bool contains(QChar c, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return indexOf(QStringView(&c, 1), 0, cs) != qsizetype(-1); }
     [[nodiscard]] bool contains(QStringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return indexOf(s, 0, cs) != qsizetype(-1); }
-    [[nodiscard]] inline bool contains(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline bool contains(QLatin1StringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
 
     [[nodiscard]] qsizetype count(QChar c, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::count(*this, c, cs); }
     [[nodiscard]] qsizetype count(QStringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::count(*this, s, cs); }
-    [[nodiscard]] inline qsizetype count(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const;
+    [[nodiscard]] inline qsizetype count(QLatin1StringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const;
 
     [[nodiscard]] qsizetype lastIndexOf(QChar c, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return lastIndexOf(c, -1, cs); }
@@ -353,8 +353,8 @@ public:
     { return lastIndexOf(s, size(), cs); }
     [[nodiscard]] qsizetype lastIndexOf(QStringView s, qsizetype from, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept
     { return QtPrivate::lastIndexOf(*this, from, s, cs); }
-    [[nodiscard]] inline qsizetype lastIndexOf(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
-    [[nodiscard]] inline qsizetype lastIndexOf(QLatin1String s, qsizetype from, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline qsizetype lastIndexOf(QLatin1StringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
+    [[nodiscard]] inline qsizetype lastIndexOf(QLatin1StringView s, qsizetype from, Qt::CaseSensitivity cs = Qt::CaseSensitive) const noexcept;
 
 #if QT_CONFIG(regularexpression)
     [[nodiscard]] qsizetype indexOf(const QRegularExpression &re, qsizetype from = 0, QRegularExpressionMatch *rmatch = nullptr) const
diff --git a/src/corelib/text/qutf8stringview.h b/src/corelib/text/qutf8stringview.h
index 76fd86b668..2b51d45da8 100644
--- a/src/corelib/text/qutf8stringview.h
+++ b/src/corelib/text/qutf8stringview.h
@@ -96,7 +96,7 @@ struct IsContainerCompatibleWithQUtf8StringView<T, std::enable_if_t<std::conjunc
         std::negation<std::is_same<std::decay_t<T>, QByteArray>>,
 
         // This has a compatible value_type, but explicitly a different encoding
-        std::negation<std::is_same<std::decay_t<T>, QLatin1String>>,
+        std::negation<std::is_same<std::decay_t<T>, QLatin1StringView>>,
 
         // Don't make an accidental copy constructor
         std::negation<std::disjunction<
diff --git a/src/corelib/time/qcalendar.h b/src/corelib/time/qcalendar.h
index 853b45b2a9..50f5c46263 100644
--- a/src/corelib/time/qcalendar.h
+++ b/src/corelib/time/qcalendar.h
@@ -147,7 +147,7 @@ public:
     explicit QCalendar(); // Gregorian, optimised
     explicit QCalendar(System system);
 #if QT_CORE_REMOVED_SINCE(6, 4)
-    explicit QCalendar(QLatin1String name);
+    explicit QCalendar(QLatin1StringView name);
     explicit QCalendar(QStringView name);
 #endif
     explicit QCalendar(QAnyStringView name);
diff --git a/src/corelib/time/qdatetime.cpp b/src/corelib/time/qdatetime.cpp
index 9652d400d0..fe8e74e7fb 100644
--- a/src/corelib/time/qdatetime.cpp
+++ b/src/corelib/time/qdatetime.cpp
@@ -123,7 +123,7 @@ static const char qt_shortMonthNames[][4] = {
 static int fromShortMonthName(QStringView monthName)
 {
     for (unsigned int i = 0; i < sizeof(qt_shortMonthNames) / sizeof(qt_shortMonthNames[0]); ++i) {
-        if (monthName == QLatin1String(qt_shortMonthNames[i], 3))
+        if (monthName == QLatin1StringView(qt_shortMonthNames[i], 3))
             return i + 1;
     }
     return -1;
diff --git a/src/corelib/time/qtimezoneprivate.cpp b/src/corelib/time/qtimezoneprivate.cpp
index d1f6330559..8bfc08bfbe 100644
--- a/src/corelib/time/qtimezoneprivate.cpp
+++ b/src/corelib/time/qtimezoneprivate.cpp
@@ -121,9 +121,9 @@ QByteArray QTimeZonePrivate::id() const
 QLocale::Territory QTimeZonePrivate::territory() const
 {
     // Default fall-back mode, use the zoneTable to find Region of known Zones
-    const QLatin1String sought(m_id.data(), m_id.size());
+    const QLatin1StringView sought(m_id.data(), m_id.size());
     for (const QZoneData &data : zoneDataTable) {
-        for (QLatin1String token : data.ids()) {
+        for (QLatin1StringView token : data.ids()) {
             if (token == sought)
                 return QLocale::Territory(data.territory);
         }
diff --git a/src/corelib/time/qtimezoneprivate_data_p.h b/src/corelib/time/qtimezoneprivate_data_p.h
index 5a5c74d74b..a044202f0f 100644
--- a/src/corelib/time/qtimezoneprivate_data_p.h
+++ b/src/corelib/time/qtimezoneprivate_data_p.h
@@ -80,7 +80,7 @@ struct QZoneData
     quint16 windowsIdKey;      // Windows ID Key
     quint16 territory;         // Territory of IANA ID's, AnyTerritory means No Territory
     quint16 ianaIdIndex;       // All IANA ID's for the Windows ID and Country, space separated
-    inline QLatin1String id() const;
+    inline QLatin1StringView id() const;
     inline auto ids() const { return id().tokenize(u' '); }
 };
 
@@ -1272,7 +1272,8 @@ static const char ianaIdData[] = {
 inline QByteArrayView QWindowsData::windowsId() const { return windowsIdData + windowsIdIndex; }
 inline QByteArrayView QWindowsData::ianaId() const { return ianaIdData + ianaIdIndex; }
 inline QByteArrayView QUtcData::id() const { return ianaIdData + ianaIdIndex; }
-inline QLatin1String QZoneData::id() const { return QLatin1String(ianaIdData + ianaIdIndex); }
+inline QLatin1StringView QZoneData::id() const
+{ return QLatin1StringView(ianaIdData + ianaIdIndex); }
 
 QT_END_NAMESPACE
 
diff --git a/src/corelib/time/qtimezoneprivate_icu.cpp b/src/corelib/time/qtimezoneprivate_icu.cpp
index 4cfcd6523c..c62e48aebb 100644
--- a/src/corelib/time/qtimezoneprivate_icu.cpp
+++ b/src/corelib/time/qtimezoneprivate_icu.cpp
@@ -491,7 +491,7 @@ QList<QByteArray> QIcuTimeZonePrivate::availableTimeZoneIds() const
 
 QList<QByteArray> QIcuTimeZonePrivate::availableTimeZoneIds(QLocale::Territory territory) const
 {
-    const QLatin1String regionCode = QLocalePrivate::territoryToCode(territory);
+    const QLatin1StringView regionCode = QLocalePrivate::territoryToCode(territory);
     const QByteArray regionCodeUtf8 = QString(regionCode).toUtf8();
     UErrorCode status = U_ZERO_ERROR;
     UEnumeration *uenum = ucal_openCountryTimeZones(regionCodeUtf8.data(), &status);
diff --git a/src/corelib/tools/qcommandlineparser.cpp b/src/corelib/tools/qcommandlineparser.cpp
index 92f391c39a..3a222aecbc 100644
--- a/src/corelib/tools/qcommandlineparser.cpp
+++ b/src/corelib/tools/qcommandlineparser.cpp
@@ -1153,7 +1153,7 @@ QString QCommandLineParserPrivate::helpText(bool includeQtOptions) const
         QString optionNamesString;
         for (const QString &optionName : optionNames) {
             const int numDashes = optionName.length() == 1 ? 1 : 2;
-            optionNamesString += QLatin1String("--", numDashes) + optionName + ", "_L1;
+            optionNamesString += QLatin1StringView("--", numDashes) + optionName + ", "_L1;
         }
         if (!optionNames.isEmpty())
             optionNamesString.chop(2); // remove trailing ", "
diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 6ee0dc4670..eb9c1590d2 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -1019,7 +1019,7 @@ size_t qHash(const QBitArray &bitArray, size_t seed) noexcept
     return result;
 }
 
-size_t qHash(QLatin1String key, size_t seed) noexcept
+size_t qHash(QLatin1StringView key, size_t seed) noexcept
 {
     return qHashBits(reinterpret_cast<const uchar *>(key.data()), size_t(key.size()), seed);
 }
@@ -1541,7 +1541,7 @@ size_t qHash(long double key, size_t seed) noexcept
     Returns the hash value for the \a key, using \a seed to seed the calculation.
 */
 
-/*! \fn size_t qHash(QLatin1String key, size_t seed = 0)
+/*! \fn size_t qHash(QLatin1StringView key, size_t seed = 0)
     \relates QHash
     \since 5.0
 
diff --git a/src/corelib/tools/qhashfunctions.h b/src/corelib/tools/qhashfunctions.h
index 7aecd2c012..4204fa7c0a 100644
--- a/src/corelib/tools/qhashfunctions.h
+++ b/src/corelib/tools/qhashfunctions.h
@@ -188,7 +188,7 @@ inline Q_DECL_PURE_FUNCTION size_t qHash(const QString &key, size_t seed = 0) no
 { return qHash(QStringView{key}, seed); }
 #endif
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION size_t qHash(const QBitArray &key, size_t seed = 0) noexcept;
-Q_CORE_EXPORT Q_DECL_PURE_FUNCTION size_t qHash(QLatin1String key, size_t seed = 0) noexcept;
+Q_CORE_EXPORT Q_DECL_PURE_FUNCTION size_t qHash(QLatin1StringView key, size_t seed = 0) noexcept;
 Q_DECL_CONST_FUNCTION constexpr inline size_t qHash(QKeyCombination key, size_t seed = 0) noexcept
 { return qHash(key.toCombined(), seed); }
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qt_hash(QStringView key, uint chained = 0) noexcept;
@@ -340,7 +340,7 @@ template <typename T1, typename T2> inline size_t qHash(const std::pair<T1, T2>
 
 QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_CREF(QString)
 QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_VALUE(QStringView)
-QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_VALUE(QLatin1String)
+QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_VALUE(QLatin1StringView)
 QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_CREF(QByteArray)
 QT_SPECIALIZE_STD_HASH_TO_CALL_QHASH_BY_CREF(QBitArray)
 
diff --git a/src/corelib/tools/qversionnumber.cpp b/src/corelib/tools/qversionnumber.cpp
index 784022f7bd..7ec0e45dd1 100644
--- a/src/corelib/tools/qversionnumber.cpp
+++ b/src/corelib/tools/qversionnumber.cpp
@@ -424,12 +424,12 @@ QString QVersionNumber::toString() const
     \snippet qversionnumber/main.cpp 3-latin1-1
 
     \note In versions prior to Qt 6.4, this function was overloaded for QString,
-    QLatin1String and QStringView instead, and \a suffixIndex was an \c{int*}.
+    QLatin1StringView and QStringView instead, and \a suffixIndex was an \c{int*}.
 
     \sa isNull()
 */
 
-static QVersionNumber from_string(QLatin1String string, qsizetype *suffixIndex)
+static QVersionNumber from_string(QLatin1StringView string, qsizetype *suffixIndex)
 {
     // 32 should be more than enough, and, crucially, it means we're allocating
     // not more (and often less) often when compared with direct QList usage
@@ -462,7 +462,7 @@ static QVersionNumber from_string(QLatin1String string, qsizetype *suffixIndex)
 
 static QVersionNumber from_string(q_no_char8_t::QUtf8StringView string, qsizetype *suffixIndex)
 {
-    return from_string(QLatin1String(string.data(), string.size()), suffixIndex);
+    return from_string(QLatin1StringView(string.data(), string.size()), suffixIndex);
 }
 
 // in qstring.cpp
@@ -473,7 +473,7 @@ static QVersionNumber from_string(QStringView string, qsizetype *suffixIndex)
     QVarLengthArray<char> copy;
     copy.resize(string.size());
     qt_to_latin1(reinterpret_cast<uchar*>(copy.data()), string.utf16(), string.size());
-    return from_string(QLatin1String(copy.data(), copy.size()), suffixIndex);
+    return from_string(QLatin1StringView(copy.data(), copy.size()), suffixIndex);
 }
 
 QVersionNumber QVersionNumber::fromString(QAnyStringView string, qsizetype *suffixIndex)
diff --git a/src/corelib/tools/qversionnumber.h b/src/corelib/tools/qversionnumber.h
index 559a09d750..c00587c300 100644
--- a/src/corelib/tools/qversionnumber.h
+++ b/src/corelib/tools/qversionnumber.h
@@ -307,7 +307,7 @@ public:
 
 #if QT_CORE_REMOVED_SINCE(6, 4)
     [[nodiscard]] Q_CORE_EXPORT static QVersionNumber fromString(const QString &string, int *suffixIndex);
-    [[nodiscard]] Q_CORE_EXPORT static QVersionNumber fromString(QLatin1String string, int *suffixIndex);
+    [[nodiscard]] Q_CORE_EXPORT static QVersionNumber fromString(QLatin1StringView string, int *suffixIndex);
     [[nodiscard]] Q_CORE_EXPORT static QVersionNumber fromString(QStringView string, int *suffixIndex);
 #endif
author	Sona Kurazyan <sona.kurazyan@qt.io>	2022-03-09 21:26:01 +0100
committer	Sona Kurazyan <sona.kurazyan@qt.io>	2022-03-26 01:44:05 +0100
commit	b6251958932be5966258f362dc9bb7c7475d2d0a (patch)
tree	2b2dc46c0d097fca15bcc9e2701682919921c339 /src/corelib
parent	73a03a0c298461aa15d7c2757bc0b6444e5dc3dc (diff)