Plugins M-V: Make static QRegularExpression instances static const

Change-Id: I291e61ac30786dfceda330d3dc73352da719c7d0
Reviewed-by: hjk <[email protected]>

32 files changed, 57 insertions, 48 deletions

diff --git a/src/plugins/mercurial/mercurialcommitwidget.cpp b/src/plugins/mercurial/mercurialcommitwidget.cpp
index d1d1a7b37b9..fb74e8af7aa 100644
--- a/src/plugins/mercurial/mercurialcommitwidget.cpp
+++ b/src/plugins/mercurial/mercurialcommitwidget.cpp
@@ -169,8 +169,8 @@ QString MercurialCommitWidget::repoRoot() const
 
 QString MercurialCommitWidget::cleanupDescription(const QString &input) const
 {
-    const QRegularExpression commentLine(QLatin1String("^HG:[^\\n]*(\\n|$)"),
-                                         QRegularExpression::MultilineOption);
+    static const QRegularExpression commentLine(QLatin1String("^HG:[^\\n]*(\\n|$)"),
+                                                QRegularExpression::MultilineOption);
     QString message = input;
     message.remove(commentLine);
     return message;
diff --git a/src/plugins/mesonprojectmanager/buildoptionsmodel.cpp b/src/plugins/mesonprojectmanager/buildoptionsmodel.cpp
index 702176b517a..8019be45566 100644
--- a/src/plugins/mesonprojectmanager/buildoptionsmodel.cpp
+++ b/src/plugins/mesonprojectmanager/buildoptionsmodel.cpp
@@ -15,9 +15,9 @@
 
 namespace MesonProjectManager::Internal {
 
-static QRegularExpression &regExp()
+static const QRegularExpression &regExp()
 {
-    static QRegularExpression s_regexp{R"('([^']+)'+|([^', ]+)[, ]*)"};
+    static const QRegularExpression s_regexp{R"('([^']+)'+|([^', ]+)[, ]*)"};
     return s_regexp;
 }
 
diff --git a/src/plugins/nim/project/nimtoolchain.cpp b/src/plugins/nim/project/nimtoolchain.cpp
index d333e618537..e083ae5b172 100644
--- a/src/plugins/nim/project/nimtoolchain.cpp
+++ b/src/plugins/nim/project/nimtoolchain.cpp
@@ -107,7 +107,7 @@ bool NimToolchain::parseVersion(const FilePath &path, std::tuple<int, int, int>
     const QString version = process.readAllStandardOutput().section('\n', 0, 0);
     if (version.isEmpty())
         return false;
-    const QRegularExpression regex("(\\d+)\\.(\\d+)\\.(\\d+)");
+    static const QRegularExpression regex("(\\d+)\\.(\\d+)\\.(\\d+)");
     const QRegularExpressionMatch match = regex.match(version);
     if (!match.hasMatch())
         return false;
diff --git a/src/plugins/perforce/pendingchangesdialog.cpp b/src/plugins/perforce/pendingchangesdialog.cpp
index 84b10a8a072..61ab54514ea 100644
--- a/src/plugins/perforce/pendingchangesdialog.cpp
+++ b/src/plugins/perforce/pendingchangesdialog.cpp
@@ -29,7 +29,7 @@ PendingChangesDialog::PendingChangesDialog(const QString &data, QWidget *parent)
     connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
 
     if (!data.isEmpty()) {
-        const QRegularExpression r(QLatin1String("Change\\s(\\d+?).*?\\s\\*?pending\\*?\\s(.+?)\n"));
+        static const QRegularExpression r("Change\\s(\\d+?).*?\\s\\*?pending\\*?\\s(.+?)\n");
         QListWidgetItem *item;
         QRegularExpressionMatchIterator it = r.globalMatch(data);
         while (it.hasNext()) {
diff --git a/src/plugins/perforce/perforceplugin.cpp b/src/plugins/perforce/perforceplugin.cpp
index 665f54b5769..389879afe96 100644
--- a/src/plugins/perforce/perforceplugin.cpp
+++ b/src/plugins/perforce/perforceplugin.cpp
@@ -731,7 +731,8 @@ void PerforcePluginPrivate::startSubmitProject()
     const QStringList filesLines = filesResult.stdOut.split(QLatin1Char('\n'));
     QStringList depotFileNames;
     for (const QString &line : filesLines) {
-        depotFileNames.append(line.left(line.lastIndexOf(QRegularExpression("#[0-9]+\\s-\\s"))));
+        static const QRegularExpression regexp("#[0-9]+\\s-\\s");
+        depotFileNames.append(line.left(line.lastIndexOf(regexp)));
     }
     if (depotFileNames.isEmpty()) {
         VcsOutputWindow::appendWarning(Tr::tr("Project has no files"));
@@ -1447,7 +1448,7 @@ QString PerforcePluginPrivate::clientFilePath(const QString &serverFilePath)
     if (response.error)
         return {};
 
-    const QRegularExpression r("\\.\\.\\.\\sclientFile\\s(.+?)\n");
+    static const QRegularExpression r("\\.\\.\\.\\sclientFile\\s(.+?)\n");
     const QRegularExpressionMatch match = r.match(response.stdOut);
     return match.hasMatch() ? match.captured(1).trimmed() : QString();
 }
@@ -1462,7 +1463,7 @@ QString PerforcePluginPrivate::pendingChangesData()
     if (userResponse.error)
         return {};
 
-    const QRegularExpression r("User\\sname:\\s(\\S+?)\\s*?\n");
+    static const QRegularExpression r("User\\sname:\\s(\\S+?)\\s*?\n");
     QTC_ASSERT(r.isValid(), return QString());
     const QRegularExpressionMatch match = r.match(userResponse.stdOut);
     const QString user = match.hasMatch() ? match.captured(1).trimmed() : QString();
diff --git a/src/plugins/perforce/perforcesubmiteditor.cpp b/src/plugins/perforce/perforcesubmiteditor.cpp
index 9b6f8240d4c..e066cb367e6 100644
--- a/src/plugins/perforce/perforcesubmiteditor.cpp
+++ b/src/plugins/perforce/perforcesubmiteditor.cpp
@@ -48,7 +48,7 @@ bool PerforceSubmitEditor::setFileContents(const QByteArray &contents)
 
 bool PerforceSubmitEditor::parseText(QString text)
 {
-    QRegularExpression formField(QLatin1String("^\\S+:"));
+    static const QRegularExpression formField("^\\S+:");
     const QString newLine = QString(QLatin1Char('\n'));
 
     int matchLen;
@@ -94,7 +94,7 @@ void PerforceSubmitEditor::updateFields()
     lines.removeFirst(); // that is the line break after 'Description:'
     lines.removeLast(); // that is the empty line at the end
 
-    const QRegularExpression leadingTabPattern("^\\t");
+    static const QRegularExpression leadingTabPattern("^\\t");
     QTC_CHECK(leadingTabPattern.isValid());
 
     lines.replaceInStrings(leadingTabPattern, QString());
@@ -122,7 +122,8 @@ void PerforceSubmitEditor::updateEntries()
     while (!lines.empty() && lines.last().isEmpty())
             lines.removeLast();
     // Description
-    lines.replaceInStrings(QRegularExpression("^"), tab);
+    static const QRegularExpression regexp("^");
+    lines.replaceInStrings(regexp, tab);
     m_entries.insert(QLatin1String("Description"), newLine + lines.join(newLine) + QLatin1String("\n\n"));
     QString files = newLine;
     // Re-build the file spec '<tab>file#add' from the user data
diff --git a/src/plugins/projectexplorer/abi.cpp b/src/plugins/projectexplorer/abi.cpp
index 3f6b392f1e4..1cde394ec8e 100644
--- a/src/plugins/projectexplorer/abi.cpp
+++ b/src/plugins/projectexplorer/abi.cpp
@@ -472,7 +472,8 @@ Abi Abi::abiFromTargetTriplet(const QString &triple)
     if (machine.isEmpty())
         return {};
 
-    const QStringList parts = machine.split(QRegularExpression("[ /-]"));
+    static const QRegularExpression splitRegexp("[ /-]");
+    const QStringList parts = machine.split(splitRegexp);
 
     Architecture arch = UnknownArchitecture;
     OS os = UnknownOS;
diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index e1382e6f22e..9b4513e203b 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -454,7 +454,7 @@ void GccToolchain::setInstallDir(const FilePath &installDir)
 QString GccToolchain::defaultDisplayName() const
 {
     QString type = typeDisplayName();
-    const QRegularExpression regexp(binaryRegexp);
+    static const QRegularExpression regexp(binaryRegexp);
     const QRegularExpressionMatch match = regexp.match(compilerCommand().fileName());
     if (match.lastCapturedIndex() >= 1)
         type += ' ' + match.captured(1);
diff --git a/src/plugins/projectexplorer/kitmanagerconfigwidget.cpp b/src/plugins/projectexplorer/kitmanagerconfigwidget.cpp
index dd2014dca8c..5cdca7c87be 100644
--- a/src/plugins/projectexplorer/kitmanagerconfigwidget.cpp
+++ b/src/plugins/projectexplorer/kitmanagerconfigwidget.cpp
@@ -60,7 +60,7 @@ KitManagerConfigWidget::KitManagerConfigWidget(Kit *k, bool &isDefaultKit, bool
            "which for example determines the name of the shadow build directory."
            "</p></body></html>").arg(QLatin1String("Kit:FileSystemName"));
     m_fileSystemFriendlyNameLineEdit->setToolTip(toolTip);
-    QRegularExpression fileSystemFriendlyNameRegexp(QLatin1String("^[A-Za-z0-9_-]*$"));
+    static const QRegularExpression fileSystemFriendlyNameRegexp(QLatin1String("^[A-Za-z0-9_-]*$"));
     Q_ASSERT(fileSystemFriendlyNameRegexp.isValid());
     m_fileSystemFriendlyNameLineEdit->setValidator(new QRegularExpressionValidator(fileSystemFriendlyNameRegexp, m_fileSystemFriendlyNameLineEdit));
 
diff --git a/src/plugins/projectexplorer/msvctoolchain.cpp b/src/plugins/projectexplorer/msvctoolchain.cpp
index 132c9afe8a4..e977f776f8c 100644
--- a/src/plugins/projectexplorer/msvctoolchain.cpp
+++ b/src/plugins/projectexplorer/msvctoolchain.cpp
@@ -2284,8 +2284,8 @@ ClangClInfo ClangClInfo::getInfo(const FilePath &filePath)
 
     static const auto parser = [](const QString &stdOut, const QString &) {
         ClangClInfo info;
-        const QRegularExpressionMatch versionMatch
-            = QRegularExpression("clang version (\\d+(\\.\\d+)+)").match(stdOut);
+        static const QRegularExpression regexp("clang version (\\d+(\\.\\d+)+)");
+        const QRegularExpressionMatch versionMatch = regexp.match(stdOut);
         if (versionMatch.hasMatch())
             info.m_version = QVersionNumber::fromString(versionMatch.captured(1));
         const QString targetKey = "Target:";
diff --git a/src/plugins/projectexplorer/userfileaccessor.cpp b/src/plugins/projectexplorer/userfileaccessor.cpp
index 173594c19f8..e3854d69008 100644
--- a/src/plugins/projectexplorer/userfileaccessor.cpp
+++ b/src/plugins/projectexplorer/userfileaccessor.cpp
@@ -176,7 +176,8 @@ namespace {
 static QString generateSuffix(const QString &suffix)
 {
     QString result = suffix;
-    result.replace(QRegularExpression("[^a-zA-Z0-9_.-]"), QString('_')); // replace fishy character
+    static const QRegularExpression regexp("[^a-zA-Z0-9_.-]");
+    result.replace(regexp, QString('_')); // replace fishy character
     if (!result.startsWith('.'))
         result.prepend('.');
     return result;
diff --git a/src/plugins/python/pyside.cpp b/src/plugins/python/pyside.cpp
index 7010e099ffa..bdccde1f3fb 100644
--- a/src/plugins/python/pyside.cpp
+++ b/src/plugins/python/pyside.cpp
@@ -74,7 +74,7 @@ QString PySideInstaller::usedPySide(const QString &text, const QString &mimeType
 {
     using namespace Python::Constants;
     if (mimeType == C_PY_MIMETYPE || mimeType == C_PY3_MIMETYPE || mimeType == C_PY_GUI_MIMETYPE) {
-        static QRegularExpression
+        static const QRegularExpression
             scanner("^\\s*(import|from)\\s+(PySide\\d)", QRegularExpression::MultilineOption);
         const QRegularExpressionMatch match = scanner.match(text);
         return match.captured(2);
diff --git a/src/plugins/python/pythonbuildsystem.cpp b/src/plugins/python/pythonbuildsystem.cpp
index 619e59ad527..f091aea2bc7 100644
--- a/src/plugins/python/pythonbuildsystem.cpp
+++ b/src/plugins/python/pythonbuildsystem.cpp
@@ -370,7 +370,7 @@ void PythonBuildSystem::parse()
  */
 static void expandEnvironmentVariables(const Environment &env, QString &string)
 {
-    const QRegularExpression candidate("\\$\\$\\((.+)\\)");
+    static const QRegularExpression candidate("\\$\\$\\((.+)\\)");
 
     QRegularExpressionMatch match;
     int index = string.indexOf(candidate, 0, &match);
diff --git a/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp b/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
index f3caa25d261..0ea8d83e55d 100644
--- a/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
+++ b/src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp
@@ -361,7 +361,7 @@ QVariantMap DefaultPropertyProvider::autoGeneratedProperties(const ProjectExplor
         }
         if (targetAbi.os() == ProjectExplorer::Abi::DarwinOS) {
             // Reverse engineer the Xcode developer path from the compiler path
-            const QRegularExpression compilerRe(
+            static const QRegularExpression compilerRe(
                 QStringLiteral("^(?<developerpath>.*)/Toolchains/(?:.+)\\.xctoolchain/usr/bin$"));
             const QRegularExpressionMatch compilerReMatch = compilerRe.match(cxxCompilerPath.absolutePath().toString());
             if (compilerReMatch.hasMatch()) {
diff --git a/src/plugins/qbsprojectmanager/qbsprofilemanager.cpp b/src/plugins/qbsprojectmanager/qbsprofilemanager.cpp
index b7f831b8dee..8fea3e1a2ed 100644
--- a/src/plugins/qbsprojectmanager/qbsprofilemanager.cpp
+++ b/src/plugins/qbsprojectmanager/qbsprofilemanager.cpp
@@ -48,7 +48,8 @@ static QString toJSLiteral(const bool b)
 static QString toJSLiteral(const QString &str)
 {
     QString js = str;
-    js.replace(QRegularExpression("([\\\\\"])"), "\\\\1");
+    static const QRegularExpression regexp("([\\\\\"])");
+    js.replace(regexp, "\\\\1");
     js.prepend('"');
     js.append('"');
     return js;
diff --git a/src/plugins/qmakeprojectmanager/addlibrarywizard.cpp b/src/plugins/qmakeprojectmanager/addlibrarywizard.cpp
index c6500df0cfd..01c172823a7 100644
--- a/src/plugins/qmakeprojectmanager/addlibrarywizard.cpp
+++ b/src/plugins/qmakeprojectmanager/addlibrarywizard.cpp
@@ -32,7 +32,7 @@ const char qt_file_dialog_filter_reg_exp[] =
 
 static QStringList qt_clean_filter_list(const QString &filter)
 {
-    const QRegularExpression regexp(qt_file_dialog_filter_reg_exp);
+    static const QRegularExpression regexp(qt_file_dialog_filter_reg_exp);
     const QRegularExpressionMatch match = regexp.match(filter);
     QString f = filter;
     if (match.hasMatch())
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.cpp b/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.cpp
index 0a36120a64b..6f77db462a4 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.cpp
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.cpp
@@ -24,7 +24,8 @@ namespace QmakeProjectManager::Internal {
 
 static QString headerGuard(const QString &header)
 {
-    return header.toUpper().replace(QRegularExpression("[^A-Z0-9]+"), QString("_"));
+    static const QRegularExpression regexp("[^A-Z0-9]+");
+    return header.toUpper().replace(regexp, QString("_"));
 }
 
 struct ProjectContents {
diff --git a/src/plugins/qmljseditor/qmljshoverhandler.cpp b/src/plugins/qmljseditor/qmljshoverhandler.cpp
index c1ef69982f7..f17ec289254 100644
--- a/src/plugins/qmljseditor/qmljshoverhandler.cpp
+++ b/src/plugins/qmljseditor/qmljshoverhandler.cpp
@@ -158,7 +158,7 @@ bool QmlJSHoverHandler::setQmlTypeHelp(const ScopeChain &scopeChain, const Docum
     const HelpItem::Links links = helpItem.links();
 
     // Check if the module name contains a major version.
-    static QRegularExpression version("^([^\\d]*)(\\d+)\\.*\\d*$");
+    static const QRegularExpression version("^([^\\d]*)(\\d+)\\.*\\d*$");
     const QRegularExpressionMatch m = version.match(moduleName);
     if (m.hasMatch()) {
         QMap<QString, QUrl> filteredUrlMap;
diff --git a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
index fa0c9f77db1..75834aaf60c 100644
--- a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
@@ -219,7 +219,7 @@ static QString getInitialDetails(const QmlEventType &event)
             if (event.rangeType() == Javascript)
                 details = Tr::tr("anonymous function");
         } else {
-            QRegularExpression rewrite(QLatin1String("^\\(function \\$(\\w+)\\(\\) \\{ (return |)(.+) \\}\\)$"));
+            static const QRegularExpression rewrite("^\\(function \\$(\\w+)\\(\\) \\{ (return |)(.+) \\}\\)$");
             QRegularExpressionMatch match = rewrite.match(details);
             if (match.hasMatch())
                 details = match.captured(1) + QLatin1String(": ") + match.captured(3);
diff --git a/src/plugins/qmlprojectmanager/projectfilecontenttools.cpp b/src/plugins/qmlprojectmanager/projectfilecontenttools.cpp
index e432967624d..7b12642ce29 100644
--- a/src/plugins/qmlprojectmanager/projectfilecontenttools.cpp
+++ b/src/plugins/qmlprojectmanager/projectfilecontenttools.cpp
@@ -84,7 +84,7 @@ const QString getMainQmlFile(const Utils::FilePath &projectFilePath)
 {
     const QString defaultReturn = "content/App.qml";
     const QString data = readFileContents(projectFilePath);
-    QRegularExpression regexp(R"x(mainFile: "(.*)")x");
+    static const QRegularExpression regexp(R"x(mainFile: "(.*)")x");
     QRegularExpressionMatch match = regexp.match(data);
     if (!match.hasMatch())
         return defaultReturn;
@@ -105,8 +105,8 @@ const Resolution resolutionFromConstants(const Utils::FilePath &projectFilePath)
     if (!reader.fetch(Utils::FilePath::fromString(fileName)))
         return {};
     const QByteArray data = reader.data();
-    const QRegularExpression regexpWidth(R"x(readonly\s+property\s+int\s+width:\s+(\d*))x");
-    const QRegularExpression regexpHeight(R"x(readonly\s+property\s+int\s+height:\s+(\d*))x");
+    static const QRegularExpression regexpWidth(R"x(readonly\s+property\s+int\s+width:\s+(\d*))x");
+    static const QRegularExpression regexpHeight(R"x(readonly\s+property\s+int\s+height:\s+(\d*))x");
     int width = -1;
     int height = -1;
     QRegularExpressionMatch match = regexpHeight.match(QString::fromUtf8(data));
diff --git a/src/plugins/qnx/qnxversionnumber.cpp b/src/plugins/qnx/qnxversionnumber.cpp
index ea7521a4b2c..c9abf93b4ba 100644
--- a/src/plugins/qnx/qnxversionnumber.cpp
+++ b/src/plugins/qnx/qnxversionnumber.cpp
@@ -66,7 +66,8 @@ QString QnxVersionNumber::segment(int index) const
 
 QnxVersionNumber QnxVersionNumber::fromTargetName(const QString &targetName)
 {
-    return fromFileName(targetName, QRegularExpression("^target_(.*)$"));
+    static const QRegularExpression regexp("^target_(.*)$");
+    return fromFileName(targetName, regexp);
 }
 
 QnxVersionNumber QnxVersionNumber::fromFileName(const QString &fileName, const QRegularExpression &regExp)
diff --git a/src/plugins/qnx/slog2inforunner.cpp b/src/plugins/qnx/slog2inforunner.cpp
index 2c7bf6716c8..6feaad06aa3 100644
--- a/src/plugins/qnx/slog2inforunner.cpp
+++ b/src/plugins/qnx/slog2inforunner.cpp
@@ -106,8 +106,8 @@ void Slog2InfoRunner::processLogLine(const QString &line)
     // The "\\s+(\\b.*)?$" represents a space followed by a message. We are unable to determinate
     // how many spaces represent separators and how many are a part of the messages, so resulting
     // messages has all whitespaces at the beginning of the message trimmed.
-    static QRegularExpression regexp(QLatin1String(
-        "^[a-zA-Z]+\\s+([0-9]+ [0-9]+:[0-9]+:[0-9]+.[0-9]+)\\s+(\\S+)(\\s+(\\S+))?\\s+([0-9]+)\\s+(.*)?$"));
+    static const QRegularExpression regexp(
+        "^[a-zA-Z]+\\s+([0-9]+ [0-9]+:[0-9]+:[0-9]+.[0-9]+)\\s+(\\S+)(\\s+(\\S+))?\\s+([0-9]+)\\s+(.*)?$");
 
     const QRegularExpressionMatch match = regexp.match(line);
     if (!match.hasMatch())
diff --git a/src/plugins/qtsupport/baseqtversion.cpp b/src/plugins/qtsupport/baseqtversion.cpp
index 98aaeb3b657..28cc8b9c672 100644
--- a/src/plugins/qtsupport/baseqtversion.cpp
+++ b/src/plugins/qtsupport/baseqtversion.cpp
@@ -1824,7 +1824,7 @@ FilePath QtVersionPrivate::mkspecFromVersionInfo(const QHash<ProKey, ProString>
                         if (temp.size() == 2) {
                             QString possibleFullPath = QString::fromLocal8Bit(temp.at(1).trimmed().constData());
                             if (possibleFullPath.contains('$')) { // QTBUG-28792
-                                const QRegularExpression rex("\\binclude\\(([^)]+)/qmake\\.conf\\)");
+                                static const QRegularExpression rex("\\binclude\\(([^)]+)/qmake\\.conf\\)");
                                 const QRegularExpressionMatch match = rex.match(QString::fromLocal8Bit(f2.readAll()));
                                 if (match.hasMatch()) {
                                     possibleFullPath = mkspecFullPath.toString() + '/'
@@ -2134,7 +2134,8 @@ static QStringList extractFieldsFromBuildString(const QByteArray &buildString)
     if (buildString.isEmpty() || buildString.size() > 4096)
         return {};
 
-    const QRegularExpression buildStringMatcher("^Qt "
+    static const QRegularExpression buildStringMatcher(
+                                                "^Qt "
                                                 "([\\d\\.a-zA-Z]*) " // Qt version
                                                 "\\("
                                                 "([\\w_-]+) "       // Abi information
diff --git a/src/plugins/scxmleditor/common/structure.cpp b/src/plugins/scxmleditor/common/structure.cpp
index f709379d34d..1ea5d9bb7a0 100644
--- a/src/plugins/scxmleditor/common/structure.cpp
+++ b/src/plugins/scxmleditor/common/structure.cpp
@@ -41,8 +41,8 @@ QWidget *TreeItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewI
     if (index.isValid()) {
         auto edit = new QLineEdit(parent);
         edit->setFocusPolicy(Qt::StrongFocus);
-        QRegularExpression rx("^(?!xml)[_a-z][a-z0-9-._]*$");
-        rx.setPatternOptions(QRegularExpression::CaseInsensitiveOption);
+        static const QRegularExpression rx("^(?!xml)[_a-z][a-z0-9-._]*$",
+                                           QRegularExpression::CaseInsensitiveOption);
         edit->setValidator(new QRegularExpressionValidator(rx, parent));
         return edit;
     }
diff --git a/src/plugins/scxmleditor/plugin_interface/scattributeitemdelegate.cpp b/src/plugins/scxmleditor/plugin_interface/scattributeitemdelegate.cpp
index 0121ddf191a..4e322f7849f 100644
--- a/src/plugins/scxmleditor/plugin_interface/scattributeitemdelegate.cpp
+++ b/src/plugins/scxmleditor/plugin_interface/scattributeitemdelegate.cpp
@@ -28,9 +28,8 @@ QWidget *SCAttributeItemDelegate::createEditor(QWidget *parent, const QStyleOpti
         if (index.column() == 0) {
             auto edit = new QLineEdit(parent);
             edit->setFocusPolicy(Qt::StrongFocus);
-            QRegularExpression rx("^(?!xml)[_a-z][a-z0-9-._]*$");
-            rx.setPatternOptions(QRegularExpression::CaseInsensitiveOption);
-
+            static const QRegularExpression rx("^(?!xml)[_a-z][a-z0-9-._]*$",
+                                               QRegularExpression::CaseInsensitiveOption);
             edit->setValidator(new QRegularExpressionValidator(rx, parent));
             return edit;
         }
diff --git a/src/plugins/squish/objectsmapeditorwidget.cpp b/src/plugins/squish/objectsmapeditorwidget.cpp
index e689a5a2962..6819c0f3866 100644
--- a/src/plugins/squish/objectsmapeditorwidget.cpp
+++ b/src/plugins/squish/objectsmapeditorwidget.cpp
@@ -514,7 +514,7 @@ void ObjectsMapEditorWidget::onPasteSymbolicNameTriggered()
         return;
 
     // if name is not valid at all refuse to do anything
-    const QRegularExpression validName("^:[^\t\n\r\f\b\v\a]+$");
+    static const QRegularExpression validName("^:[^\t\n\r\f\b\v\a]+$");
     if (!validName.match(symbolicName).hasMatch())
         return;
 
diff --git a/src/plugins/squish/propertyitemdelegate.cpp b/src/plugins/squish/propertyitemdelegate.cpp
index d859db864b7..fa21bc8f9ed 100644
--- a/src/plugins/squish/propertyitemdelegate.cpp
+++ b/src/plugins/squish/propertyitemdelegate.cpp
@@ -137,7 +137,7 @@ ValidatingPropertyNameLineEdit::ValidatingPropertyNameLineEdit(const QStringList
         if (!edit)
             return false;
 
-        const QRegularExpression identifier("^[a-zA-Z0-9_]+$");
+        static const QRegularExpression identifier("^[a-zA-Z0-9_]+$");
         const QString &value = edit->text();
 
         return !m_forbidden.contains(value) && identifier.match(value).hasMatch();
diff --git a/src/plugins/terminal/terminalsettings.cpp b/src/plugins/terminal/terminalsettings.cpp
index f14766918da..4ac13061798 100644
--- a/src/plugins/terminal/terminalsettings.cpp
+++ b/src/plugins/terminal/terminalsettings.cpp
@@ -87,7 +87,7 @@ static expected_str<void> loadXdefaults(const FilePath &path)
     if (!readResult)
         return make_unexpected(readResult.error());
 
-    QRegularExpression re(R"(.*\*(color[0-9]{1,2}|foreground|background):\s*(#[0-9a-f]{6}))");
+    static const QRegularExpression re(R"(.*\*(color[0-9]{1,2}|foreground|background):\s*(#[0-9a-f]{6}))");
 
     for (const QByteArray &line : readResult->split('\n')) {
         if (line.trimmed().startsWith('!'))
diff --git a/src/plugins/texteditor/codeassist/documentcontentcompletion.cpp b/src/plugins/texteditor/codeassist/documentcontentcompletion.cpp
index d994238f4a3..d825e6049f5 100644
--- a/src/plugins/texteditor/codeassist/documentcontentcompletion.cpp
+++ b/src/plugins/texteditor/codeassist/documentcontentcompletion.cpp
@@ -80,7 +80,7 @@ IAssistProposal *DocumentContentCompletionProcessor::performAsync()
     const QString wordUnderCursor = interface()->textAt(pos, length);
     const QString text = interface()->textDocument()->toPlainText();
 
-    const QRegularExpression wordRE("([\\p{L}_][\\p{L}0-9_]{2,})");
+    static const QRegularExpression wordRE("([\\p{L}_][\\p{L}0-9_]{2,})");
     QSet<QString> words;
     QRegularExpressionMatchIterator it = wordRE.globalMatch(text);
     int wordUnderCursorFound = 0;
diff --git a/src/plugins/texteditor/storagesettings.cpp b/src/plugins/texteditor/storagesettings.cpp
index 81b9ceace46..69026ab9152 100644
--- a/src/plugins/texteditor/storagesettings.cpp
+++ b/src/plugins/texteditor/storagesettings.cpp
@@ -66,7 +66,7 @@ bool StorageSettings::removeTrailingWhitespace(const QString &fileName) const
     const QString ignoreFileTypesRegExp(R"(\s*((?>\*\.)?[\w\d\.\*]+)[,;]?\s*)");
 
     // use the ignore-files regex to extract the specified file patterns
-    QRegularExpression re(ignoreFileTypesRegExp);
+    static const QRegularExpression re(ignoreFileTypesRegExp);
     QRegularExpressionMatchIterator iter = re.globalMatch(m_ignoreFileTypes);
 
     while (iter.hasNext()) {
diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index 1ae3b953b73..f44fa7b7baf 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -2457,7 +2457,8 @@ void TextEditorWidget::joinLines()
             QString cutLine = c.selectedText();
 
             // Collapse leading whitespaces to one or insert whitespace
-            cutLine.replace(QRegularExpression(QLatin1String("^\\s*")), QLatin1String(" "));
+            static const QRegularExpression regexp("^\\s*");
+            cutLine.replace(regexp, QLatin1String(" "));
             c.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
             c.removeSelectedText();
 
@@ -8815,7 +8816,7 @@ void TextEditorWidget::autoIndent()
 void TextEditorWidget::rewrapParagraph()
 {
     const int paragraphWidth = marginSettings().m_marginColumn;
-    const QRegularExpression anyLettersOrNumbers("\\w");
+    static const QRegularExpression anyLettersOrNumbers("\\w");
     const TabSettings ts = d->m_document->tabSettings();
 
     QTextCursor cursor = textCursor();
@@ -8868,7 +8869,7 @@ void TextEditorWidget::rewrapParagraph()
     }
 
     // Find end of paragraph.
-    const QRegularExpression immovableDoxygenCommand(doxygenPrefix + "[@\\\\][a-zA-Z]{2,}");
+    static const QRegularExpression immovableDoxygenCommand(doxygenPrefix + "[@\\\\][a-zA-Z]{2,}");
     QTC_CHECK(immovableDoxygenCommand.isValid());
     while (cursor.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor)) {
         QString text = cursor.block().text();
diff --git a/src/plugins/valgrind/memchecktool.cpp b/src/plugins/valgrind/memchecktool.cpp
index 5b4fa2365a3..b7430ca8eb7 100644
--- a/src/plugins/valgrind/memchecktool.cpp
+++ b/src/plugins/valgrind/memchecktool.cpp
@@ -1155,7 +1155,8 @@ HeobDialog::HeobDialog(QWidget *parent) :
     QtcSettings *settings = Core::ICore::settings();
     bool hasSelProfile = settings->contains(heobProfileC);
     const QString selProfile = hasSelProfile ? settings->value(heobProfileC).toString() : "Heob";
-    m_profiles = settings->childGroups().filter(QRegularExpression("^Heob\\.Profile\\."));
+    static const QRegularExpression regexp("^Heob\\.Profile\\.");
+    m_profiles = settings->childGroups().filter(regexp);
 
     auto layout = new QVBoxLayout;
     // disable resizing