diff --git a/src/core/kremoteencoding.cpp b/src/core/kremoteencoding.cpp
--- a/src/core/kremoteencoding.cpp
+++ b/src/core/kremoteencoding.cpp
@@ -31,6 +31,7 @@
     }
 
     QTextCodec *m_codec;
+    QByteArray m_codeName;
 };
 
 KRemoteEncoding::KRemoteEncoding(const char *name)
@@ -95,7 +96,8 @@
 const char *KRemoteEncoding::encoding() const
 {
     // KF6 TODO: return QByteArray
-    return d->m_codec->name().constData();
+    d->m_codeName = d->m_codec->name();
+    return d->m_codeName.constData();
 }
 
 int KRemoteEncoding::encodingMib() const
diff --git a/src/filewidgets/kfileplacesmodel.cpp b/src/filewidgets/kfileplacesmodel.cpp
--- a/src/filewidgets/kfileplacesmodel.cpp
+++ b/src/filewidgets/kfileplacesmodel.cpp
@@ -164,7 +164,7 @@
           bookmarkManager(nullptr),
           fileIndexingEnabled(isFileIndexingEnabled()),
           tags(),
-          tagsLister(new KCoreDirLister())
+          tagsLister(new KCoreDirLister(q))
     {
         if (KProtocolInfo::isKnownProtocol(QStringLiteral("tags"))) {
             connect(tagsLister, &KCoreDirLister::itemsAdded, q, [this](const QUrl&, const KFileItemList& items) {
diff --git a/src/ioslaves/http/http.cpp b/src/ioslaves/http/http.cpp
--- a/src/ioslaves/http/http.cpp
+++ b/src/ioslaves/http/http.cpp
@@ -5620,7 +5620,7 @@
         fileSystemFreeSpace(*url);
     }   break;
     default:
-        SlaveBase::virtual_hook(id, data);
+        TCPSlaveBase::virtual_hook(id, data);
     }
 }