>>> Bux not fixed:
RegexInvalid.status(): "17"
RegexInvalid.begin(): "0"
RegexValid.status(): "0"
RegexValid.begin(): "0"

>>> Bug fixed:
RegexInvalid.status(): "17"
RegexInvalid.begin(): "0"
RegexValid.status(): "0"
RegexValid.begin(): "0x916618"