Does the Due Process Clause tolerate invidious discrimination by way of a state court's denial of a well-established exception to the rule?

QUESTION(S) PRESENTED as Does the Due Process Clause tolerate invidious discrimination ; by way of a state court's denial of a well-established exception to the rule? , Is notice required when a state court converts a common-law matter into one governed by a stricter statutory demand? So Does the Constitution tolerate amendments to an indictment that broadens a criminal statute and makes a substantive change ~ in identity of the offense(s)? ( . , \