6 files changed, 12 insertions, 12 deletions
diff --git a/src/network/access/qftp.cpp b/src/network/access/qftp.cpp
index badcb5b021..bb89eece4b 100644
--- a/src/network/access/qftp.cpp
+++ b/src/network/access/qftp.cpp
@@ -225,8 +225,8 @@ private:
 class QFtpCommand
 {
 public:
-    QFtpCommand(QFtp::Command cmd, QStringList raw, const QByteArray &ba);
-    QFtpCommand(QFtp::Command cmd, QStringList raw, QIODevice *dev = 0);
+    QFtpCommand(QFtp::Command cmd, const QStringList &raw, const QByteArray &ba);
+    QFtpCommand(QFtp::Command cmd, const QStringList &raw, QIODevice *dev = 0);
     ~QFtpCommand();
 
     int id;
@@ -246,14 +246,14 @@ public:
 
 QBasicAtomicInt QFtpCommand::idCounter = Q_BASIC_ATOMIC_INITIALIZER(1);
 
-QFtpCommand::QFtpCommand(QFtp::Command cmd, QStringList raw, const QByteArray &ba)
+QFtpCommand::QFtpCommand(QFtp::Command cmd, const QStringList &raw, const QByteArray &ba)
     : command(cmd), rawCmds(raw), is_ba(true)
 {
     id = idCounter.fetchAndAddRelaxed(1);
     data.ba = new QByteArray(ba);
 }
 
-QFtpCommand::QFtpCommand(QFtp::Command cmd, QStringList raw, QIODevice *dev)
+QFtpCommand::QFtpCommand(QFtp::Command cmd, const QStringList &raw, QIODevice *dev)
     : command(cmd), rawCmds(raw), is_ba(false)
 {
     id = idCounter.fetchAndAddRelaxed(1);
diff --git a/src/network/access/qnetworkcookiejar.cpp b/src/network/access/qnetworkcookiejar.cpp
index f5c97aeaae..3cefb28f68 100644
--- a/src/network/access/qnetworkcookiejar.cpp
+++ b/src/network/access/qnetworkcookiejar.cpp
@@ -130,7 +130,7 @@ void QNetworkCookieJar::setAllCookies(const QList<QNetworkCookie> &cookieList)
     d->allCookies = cookieList;
 }
 
-static inline bool isParentPath(QString path, QString reference)
+static inline bool isParentPath(const QString &path, const QString &reference)
 {
     if (path.startsWith(reference)) {
         //The cookie-path and the request-path are identical.
@@ -149,7 +149,7 @@ static inline bool isParentPath(QString path, QString reference)
     return false;
 }
 
-static inline bool isParentDomain(QString domain, QString reference)
+static inline bool isParentDomain(const QString &domain, const QString &reference)
 {
     if (!reference.startsWith(QLatin1Char('.')))
         return domain == reference;
diff --git a/src/network/kernel/qhostinfo.cpp b/src/network/kernel/qhostinfo.cpp
index 2912c6fef3..d2dc7c4850 100644
--- a/src/network/kernel/qhostinfo.cpp
+++ b/src/network/kernel/qhostinfo.cpp
@@ -431,7 +431,7 @@ void QHostInfo::setErrorString(const QString &str)
     \sa hostName()
 */
 
-QHostInfoRunnable::QHostInfoRunnable(QString hn, int i) : toBeLookedUp(hn), id(i)
+QHostInfoRunnable::QHostInfoRunnable(const QString &hn, int i) : toBeLookedUp(hn), id(i)
 {
     setAutoDelete(true);
 }
diff --git a/src/network/kernel/qhostinfo_p.h b/src/network/kernel/qhostinfo_p.h
index 5400b18b37..74cfe2a9aa 100644
--- a/src/network/kernel/qhostinfo_p.h
+++ b/src/network/kernel/qhostinfo_p.h
@@ -145,7 +145,7 @@ private:
 class QHostInfoRunnable : public QRunnable
 {
 public:
-    QHostInfoRunnable (QString hn, int i);
+    QHostInfoRunnable(const QString &hn, int i);
     void run() Q_DECL_OVERRIDE;
 
     QString toBeLookedUp;
diff --git a/src/network/socket/qsocks5socketengine.cpp b/src/network/socket/qsocks5socketengine.cpp
index 2a23642f26..bdeee4195c 100644
--- a/src/network/socket/qsocks5socketengine.cpp
+++ b/src/network/socket/qsocks5socketengine.cpp
@@ -438,13 +438,13 @@ bool QSocks5Authenticator::continueAuthenticate(QTcpSocket *socket, bool *comple
     return true;
 }
 
-bool QSocks5Authenticator::seal(const QByteArray buf, QByteArray *sealedBuf)
+bool QSocks5Authenticator::seal(const QByteArray &buf, QByteArray *sealedBuf)
 {
     *sealedBuf = buf;
     return true;
 }
 
-bool QSocks5Authenticator::unSeal(const QByteArray sealedBuf, QByteArray *buf)
+bool QSocks5Authenticator::unSeal(const QByteArray &sealedBuf, QByteArray *buf)
 {
     *buf = sealedBuf;
     return true;
diff --git a/src/network/socket/qsocks5socketengine_p.h b/src/network/socket/qsocks5socketengine_p.h
index 185d973e06..c97b0e89ce 100644
--- a/src/network/socket/qsocks5socketengine_p.h
+++ b/src/network/socket/qsocks5socketengine_p.h
@@ -149,8 +149,8 @@ public:
     virtual bool beginAuthenticate(QTcpSocket *socket, bool *completed);
     virtual bool continueAuthenticate(QTcpSocket *socket, bool *completed);
 
-    virtual bool seal(const QByteArray buf, QByteArray *sealedBuf);
-    virtual bool unSeal(const QByteArray sealedBuf, QByteArray *buf);
+    virtual bool seal(const QByteArray &buf, QByteArray *sealedBuf);
+    virtual bool unSeal(const QByteArray &sealedBuf, QByteArray *buf);
     virtual bool unSeal(QTcpSocket *sealedSocket, QByteArray *buf);
 
     virtual QString errorString() { return QString(); }