QDate::fromString does not work with some formats in certain locales

QDate::fromString(config->date, "d-MMM-yyyy"); in a Japanese Locale did not work

Traced issue to: int QDateTimeParser::sectionMaxSize(Section s, int count) const staring at line 618 in .cpp file

const QLocale l = locale();
const QLocale::FormatType format = count == 4 ? QLocale::LongFormat : QLocale::ShortFormat;
for (int i=1; i<=mcount; ++i) {
    const QString str = (s == MonthSection ? l.monthName(i, format) : l.dayName(i, format));
    ret = qMax(str.size(), ret);
} 

the Japanese month names are all 2 characters long, the date I have specified has 3 characters.

This results in an invalid date when it should not.  We should not use the local to specify the space allotted since in the format string we have already specified the width.  Alternatively we should specify the source locale of the string.  This string comes from a 3rd party source and is always in this format. 

Thanks