Silence GCC 8 warnings in QString

qtbase/src/corelib/tools/qstring.cpp:3539:67: error: ‘void* memcpy(void*, const void*, size_t)’ copying an object of non-trivial type ‘class QChar’ from an array of ‘short unsigned int’ [-Werror=class-memaccess]
             memcpy(uc, d->data() + copystart, size * sizeof(QChar));

Change-Id: Ic601bed1a1f9e1b6f0ac1f9e58f1dcadb50ad724
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

src/corelib/tools/qstring.cpp

@@ -3536,14 +3536,14 @@ QString& QString::replace(const QRegExp &rx, const QString &after)
         while (i < pos) {
             int copyend = replacements[i].pos;
             int size = copyend - copystart;
-            memcpy(uc, d->data() + copystart, size * sizeof(QChar));
+            memcpy(static_cast<void*>(uc), static_cast<const void *>(d->data() + copystart), size * sizeof(QChar));
             uc += size;
-            memcpy(uc, after.d->data(), al * sizeof(QChar));
+            memcpy(static_cast<void *>(uc), static_cast<const void *>(after.d->data()), al * sizeof(QChar));
             uc += al;
             copystart = copyend + replacements[i].length;
             i++;
         }
-        memcpy(uc, d->data() + copystart, (d->size - copystart) * sizeof(QChar));
+        memcpy(static_cast<void *>(uc), static_cast<const void *>(d->data() + copystart), (d->size - copystart) * sizeof(QChar));
         newstring.resize(newlen);
         *this = newstring;
         caretMode = QRegExp::CaretWontMatch;
@@ -5766,7 +5766,7 @@ QString QString::rightJustified(int width, QChar fill, bool truncate) const
         while (padlen--)
            * uc++ = fill;
         if (len)
-            memcpy(uc, d->data(), sizeof(QChar)*len);
+          memcpy(static_cast<void *>(uc), static_cast<const void *>(d->data()), sizeof(QChar)*len);
     } else {
         if (truncate)
             result = left(width);