diff --git a/autotests/loadcalendar.cpp b/autotests/loadcalendar.cpp
--- a/autotests/loadcalendar.cpp
+++ b/autotests/loadcalendar.cpp
@@ -41,7 +41,10 @@
 
     MemoryCalendar::Ptr cal(new MemoryCalendar(QTimeZone::utc()));
     FileStorage store(cal, QStringLiteral("cal"));
-    store.load();
+    if (!store.load()) {
+        qWarning() << "Error storing into memory calendar";
+        return 1;
+    }
 
     Todo::List todoList;
 
diff --git a/autotests/testattendee.cpp b/autotests/testattendee.cpp
--- a/autotests/testattendee.cpp
+++ b/autotests/testattendee.cpp
@@ -149,7 +149,7 @@
 
     Person::Ptr person;
     bool rsvp;
-    QString name, email, delegate, delegator, cuType, uid;
+    QString delegate, delegator, cuType, uid;
     CustomProperties customProperties;
     Attendee::Role role;
     Attendee::PartStat status;
diff --git a/autotests/testcreateddatecompat.cpp b/autotests/testcreateddatecompat.cpp
--- a/autotests/testcreateddatecompat.cpp
+++ b/autotests/testcreateddatecompat.cpp
@@ -63,7 +63,7 @@
 {
     KCalCore::MemoryCalendar::Ptr cal(new KCalCore::MemoryCalendar(QTimeZone::utc()));
     KCalCore::ICalFormat format;
-    format.fromRawString(cal, QByteArray(icalFile32));
+    QVERIFY(format.fromRawString(cal, QByteArray(icalFile32)));
     KCalCore::Event::Ptr event = cal->event(QStringLiteral("uid"));
     QVERIFY(event);
     QCOMPARE(event->created(),
@@ -74,7 +74,7 @@
 {
     KCalCore::MemoryCalendar::Ptr cal(new KCalCore::MemoryCalendar(QTimeZone::utc()));
     KCalCore::ICalFormat format;
-    format.fromRawString(cal, QByteArray(icalFile33));
+    QVERIFY(format.fromRawString(cal, QByteArray(icalFile33)));
     KCalCore::Event::Ptr event = cal->event(QStringLiteral("uid"));
     QVERIFY(event);
     QCOMPARE(event->created(),
diff --git a/autotests/testfreebusy.cpp b/autotests/testfreebusy.cpp
--- a/autotests/testfreebusy.cpp
+++ b/autotests/testfreebusy.cpp
@@ -63,7 +63,9 @@
     const QDateTime thirdfb1DateTime(QDate(2007, 6, 27), QTime(7, 0, 0), Qt::UTC);
     fb1.addPeriod(thirdfb1DateTime, QDateTime(QDate(2007, 6, 27), QTime(8, 0, 0), Qt::UTC));
 
-    QCOMPARE(fb1.busyPeriods().last().end(), QDateTime(QDate(2007, 10, 27), QTime(8, 0, 0), Qt::UTC));
+    Period::List busyPeriods = fb1.busyPeriods();
+    QVERIFY(!busyPeriods.isEmpty());
+    QCOMPARE(busyPeriods.last().end(), QDateTime(QDate(2007, 10, 27), QTime(8, 0, 0), Qt::UTC));
 }
 
 void FreeBusyTest::testAssign()
diff --git a/autotests/testicalformat.cpp b/autotests/testicalformat.cpp
--- a/autotests/testicalformat.cpp
+++ b/autotests/testicalformat.cpp
@@ -95,7 +95,7 @@
 
     // Test fromRawString()
     MemoryCalendar::Ptr calendar3(new MemoryCalendar(QTimeZone::utc()));
-    format.fromRawString(calendar3, bytesFromFile);
+    QVERIFY(format.fromRawString(calendar3, bytesFromFile));
     QVERIFY(calendar3->incidences().count() == 1);
     QVERIFY(*calendar3->incidences().at(0) == *event);
 
diff --git a/autotests/testoccurrenceiterator.cpp b/autotests/testoccurrenceiterator.cpp
--- a/autotests/testoccurrenceiterator.cpp
+++ b/autotests/testoccurrenceiterator.cpp
@@ -87,8 +87,6 @@
     KCalCore::MemoryCalendar calendar(QTimeZone::utc());
 
     QDateTime start(QDate(2013, 03, 10), QTime(10, 0, 0), Qt::UTC);
-    QDateTime end(QDate(2013, 03, 10), QTime(11, 0, 0), Qt::UTC);
-
     QDateTime actualEnd(QDate(2013, 03, 13), QTime(11, 0, 0), Qt::UTC);
 
     KCalCore::Event::Ptr event(new KCalCore::Event());
@@ -129,8 +127,6 @@
     calendar.filter()->setCriteria(KCalCore::CalFilter::HideCompletedTodos);
 
     QDateTime start(QDate(2013, 03, 10), QTime(10, 0, 0), Qt::UTC);
-    QDateTime end(QDate(2013, 03, 10), QTime(11, 0, 0), Qt::UTC);
-
     QDateTime actualEnd(QDate(2013, 03, 13), QTime(11, 0, 0), Qt::UTC);
 
     KCalCore::Todo::Ptr todo(new KCalCore::Todo());
diff --git a/src/memorycalendar.cpp b/src/memorycalendar.cpp
--- a/src/memorycalendar.cpp
+++ b/src/memorycalendar.cpp
@@ -668,7 +668,6 @@
     const auto ts = timeZone.isValid() ? timeZone : this->timeZone();
     QDateTime st(start, QTime(0, 0, 0), ts);
     QDateTime nd(end, QTime(23, 59, 59, 999), ts);
-    QDateTime yesterStart = st.addDays(-1);
 
     // Get non-recurring events
     QHashIterator<QString, Incidence::Ptr>i(d->mIncidences[Incidence::TypeEvent]);