Datatype misalignment on ARM processor when the message WM_SETTINGCHANGE is processed

QString QString::fromUtf16(const ushort *unicode, int size)
{
    if (!unicode)
        return QString();
    if (size < 0) {
        size = 0;
        while (unicode[size] != 0) >>>>DATATYPE MISALIGNMENT EXCEPTION
            ++size;
    }
    return QUtf16::convertToUnicode((const char *)unicode, size*2, 0);
}

QString QString::fromWCharArray(const wchar_t *string, int size)
{
    if (sizeof(wchar_t) == sizeof(QChar)) {
        return fromUtf16((ushort *)string, size);  >>>>>>>> CALLS TO fromUtf16 WHICH THROWS
    } else {
        return fromUcs4((uint *)string, size);
    }
}

        case WM_SETTINGCHANGE:
            if ( QApplication::type() == QApplication::Tty )
                break;

            if (!msg.wParam) {
                QString area = QString::fromWCharArray((wchar_t*)msg.lParam); >>>>>> CALLS fromUtf16 WHICH THROWS
                if (area == QLatin1String("intl")) {
                    QLocalePrivate::updateSystemPrivate();
                    if (!widget->testAttribute(Qt::WA_SetLocale))
                        widget->dptr()->setLocale_helper(QLocale(), true);
                }
            }