QCborValue: fix warning about shadowing members

qcborvalue.h:145:9: error: declaration of 'taggedValue' shadows a member of 'this' [-Werror=shadow]

Newer versions of GCC don't warn for variable shadowing a member
function.

Task-number: QTBUG-68889
Change-Id: I6efb28c3145047559ec0fffd153857b856267d6d
Reviewed-by: Liang Qi <liang.qi@qt.io>

src/corelib/serialization/qcbormap.h

@@ -269,28 +269,28 @@ public:
     const_iterator find(const QString & key) const { return constFind(key); }
     const_iterator find(const QCborValue &key) const { return constFind(key); }
 
-    iterator insert(qint64 key, const QCborValue &value)
+    iterator insert(qint64 key, const QCborValue &value_)
     {
         QCborValueRef v = operator[](key);  // detaches
-        v = value;
+        v = value_;
         return { d.data(), v.i };
     }
-    iterator insert(QLatin1String key, const QCborValue &value)
+    iterator insert(QLatin1String key, const QCborValue &value_)
     {
         QCborValueRef v = operator[](key);  // detaches
-        v = value;
+        v = value_;
         return { d.data(), v.i };
     }
-    iterator insert(const QString &key, const QCborValue &value)
+    iterator insert(const QString &key, const QCborValue &value_)
     {
         QCborValueRef v = operator[](key);  // detaches
-        v = value;
+        v = value_;
         return { d.data(), v.i };
     }
-    iterator insert(const QCborValue &key, const QCborValue &value)
+    iterator insert(const QCborValue &key, const QCborValue &value_)
     {
         QCborValueRef v = operator[](key);  // detaches
-        v = value;
+        v = value_;
         return { d.data(), v.i };
     }
     iterator insert(value_type v) { return insert(v.first, v.second); }

src/corelib/serialization/qcborvalue.cpp

@@ -1832,17 +1832,20 @@ QCborValue::QCborValue(const QCborMap &m)
 }
 
 /*!
+    \fn QCborValue::QCborValue(QCborTag t, const QCborValue &tv)
+    \fn QCborValue::QCborValue(QCborKnownTags t, const QCborValue &tv)
+
     Creates a QCborValue for the extended type represented by the tag value \a
-    tag, tagging value \a tv. The tag can later be retrieved using tag() and
+    t, tagging value \a tv. The tag can later be retrieved using tag() and
     the tagged value using taggedValue().
 
     \sa isTag(), tag(), taggedValue(), QCborKnownTags
  */
-QCborValue::QCborValue(QCborTag tag, const QCborValue &tv)
+QCborValue::QCborValue(QCborTag t, const QCborValue &tv)
     : n(-1), container(new QCborContainerPrivate), t(Tag)
 {
     container->ref.store(1);
-    container->append(tag);
+    container->append(t);
     container->append(tv);
 }
 

src/corelib/serialization/qcborvalue.h

@@ -141,8 +141,8 @@ public:
     QCborValue(const QCborArray &a);
     QCborValue(const QCborMap &m);
     QCborValue(QCborTag tag, const QCborValue &taggedValue = QCborValue());
-    QCborValue(QCborKnownTags tag, const QCborValue &taggedValue = QCborValue())
+    QCborValue(QCborKnownTags t_, const QCborValue &tv = QCborValue())
-        : QCborValue(QCborTag(tag), taggedValue)
+        : QCborValue(QCborTag(t_), tv)
     {}
 
     explicit QCborValue(const QDateTime &dt);
@@ -342,8 +342,8 @@ public:
         return type() == QCborValue::type_helper(st);
     }
 
-    QCborTag tag(QCborTag tag = QCborTag(-1)) const
+    QCborTag tag(QCborTag defaultValue = QCborTag(-1)) const
-    { return concrete().tag(tag); }
+    { return concrete().tag(defaultValue); }
     QCborValue taggedValue(const QCborValue &defaultValue = QCborValue()) const
     { return concrete().taggedValue(defaultValue); }