For std::sort we should include <algorithm>.
#include "clientbacklogmanager.h"
+#include <algorithm>
#include <ctime>
#include <QDebug>
#include "messagemodel.h"
+#include <algorithm>
+
#include <QEvent>
#include "backlogsettings.h"
#include "networkmodel.h"
+#include <algorithm>
#include <utility>
#include <QAbstractItemView>
#include "coresessioneventprocessor.h"
+#include <algorithm>
+
#include "coreirclisthelper.h"
#include "corenetwork.h"
#include "coresession.h"
#include "chatview.h"
+#include <algorithm>
+
#include <QGraphicsTextItem>
#include <QKeyEvent>
#include <QMenu>
#include "chatviewsearchcontroller.h"
+#include <algorithm>
+
#include <QAbstractItemModel>
#include <QPainter>
#include "bufferviewsettingspage.h"
+#include <algorithm>
#include <utility>
#include <QMessageBox>
#include "corehighlightsettingspage.h"
+#include <algorithm>
+
#include <QHeaderView>
#include <QMessageBox>
#include <QTableWidget>
#include "highlightsettingspage.h"
+#include <algorithm>
+
#include <QHeaderView>
#include <QMessageBox>