3 files changed, 9 insertions, 7 deletions
diff --git a/src/corelib/statemachine/qhistorystate.cpp b/src/corelib/statemachine/qhistorystate.cpp
index c3361ad17e..338c89c688 100644
--- a/src/corelib/statemachine/qhistorystate.cpp
+++ b/src/corelib/statemachine/qhistorystate.cpp
@@ -209,6 +209,11 @@ QAbstractState *QHistoryState::defaultState() const
     return d->defaultTransition ? d->defaultTransition->targetState() : Q_NULLPTR;
 }
 
+static inline bool isSoleEntry(const QList<QAbstractState*> &states, const QAbstractState * state)
+{
+    return states.size() == 1 && states.first() == state;
+}
+
 /*!
   Sets this history state's default state to be the given \a state.
   \a state must be a sibling of this history state.
@@ -224,9 +229,7 @@ void QHistoryState::setDefaultState(QAbstractState *state)
                  "to this history state's group (%p)", state, parentState());
         return;
     }
-    if (!d->defaultTransition
-            || d->defaultTransition->targetStates().size() != 1
-            || d->defaultTransition->targetStates().first() != state) {
+    if (!d->defaultTransition || !isSoleEntry(d->defaultTransition->targetStates(), state)) {
         if (!d->defaultTransition || !qobject_cast<DefaultStateTransition*>(d->defaultTransition)) {
             d->defaultTransition = new DefaultStateTransition(this, state);
             emit defaultTransitionChanged(QHistoryState::QPrivateSignal());
diff --git a/src/corelib/statemachine/qsignaltransition.cpp b/src/corelib/statemachine/qsignaltransition.cpp
index 9972487eb5..c4ba8e5315 100644
--- a/src/corelib/statemachine/qsignaltransition.cpp
+++ b/src/corelib/statemachine/qsignaltransition.cpp
@@ -159,9 +159,8 @@ QSignalTransition::QSignalTransition(const QObject *sender, const char *signal,
 
   Constructs a new signal transition associated with the given \a signal of
   the given \a sender object and with the given \a sourceState.
-  This constructor is enabled if compiler supports delegating constructor.
-
-  \sa Q_COMPILER_DELEGATING_CONSTRUCTORS
+  This constructor is enabled if the compiler supports delegating constructors,
+  as indicated by the presence of the macro Q_COMPILER_DELEGATING_CONSTRUCTORS.
 */
 
 /*!
diff --git a/src/corelib/statemachine/qstatemachine.cpp b/src/corelib/statemachine/qstatemachine.cpp
index 62a4c03d26..d5b01f3c8a 100644
--- a/src/corelib/statemachine/qstatemachine.cpp
+++ b/src/corelib/statemachine/qstatemachine.cpp
@@ -692,7 +692,7 @@ void QStateMachinePrivate::microstep(QEvent *event, const QList<QAbstractTransit
         // Add "implicit" assignments for restored properties to the first
         // (outermost) entered state
         Q_ASSERT(!enteredStates.isEmpty());
-        QAbstractState *s = enteredStates.first();
+        QAbstractState *s = enteredStates.constFirst();
         assignmentsForEnteredStates[s] << restorablesToPropertyList(pendingRestorables);
     }