Merge remote-tracking branch 'origin/5.14' into 5.15

Change-Id: I98086dc1584e90a24a4f90cd7b86582df047e81d

3 files changed, 12 insertions, 2 deletions

diff --git a/src/corelib/time/qcalendar.cpp b/src/corelib/time/qcalendar.cpp
index d706f1d5ab..d308aeba2b 100644
--- a/src/corelib/time/qcalendar.cpp
+++ b/src/corelib/time/qcalendar.cpp
@@ -701,7 +701,7 @@ const QCalendarBackend *QCalendarBackend::fromEnum(QCalendar::System system)
     calendar being constructed by other means first. With no argument, the
     default constructor returns the Gregorian calendar.
 
-    \sa QCalendar, System
+    \sa QCalendar, System, isValid()
 */
 
 QCalendar::QCalendar()
@@ -723,6 +723,15 @@ QCalendar::QCalendar(QLatin1String name)
 QCalendar::QCalendar(QStringView name)
     : d(QCalendarBackend::fromName(name)) {}
 
+/*
+    \fn bool QCalendar::isValid() const
+
+    Returns true if this is a valid calendar object.
+
+    Constructing a calendar with an unrecognised calendar name may result in an
+    invalid object. Use this method to check after creating a calendar by name.
+*/
+
 // Date queries:
 
 /*!
diff --git a/src/corelib/time/qcalendar.h b/src/corelib/time/qcalendar.h
index dd3df76e17..42c8e150c5 100644
--- a/src/corelib/time/qcalendar.h
+++ b/src/corelib/time/qcalendar.h
@@ -137,7 +137,7 @@ public:
     explicit QCalendar(QStringView name);
 
     // QCalendar is a trivially copyable value type.
-    bool isValid() { return d != nullptr; }
+    bool isValid() const { return d != nullptr; }
 
     // Date queries:
     int daysInMonth(int month, int year = Unspecified) const;
diff --git a/src/corelib/time/qdatetime.cpp b/src/corelib/time/qdatetime.cpp
index 13a54c1210..6ed0efe77d 100644
--- a/src/corelib/time/qdatetime.cpp
+++ b/src/corelib/time/qdatetime.cpp
@@ -3548,6 +3548,7 @@ inline qint64 QDateTimePrivate::zoneMSecsToEpochMSecs(qint64 zoneMSecs, const QT
 */
 
 /*!
+    \since 5.14
     \enum QDateTime::YearRange
 
     This enumerated type describes the range of years (in the Gregorian