Singapore legislation
Section 423
Section 423
When irregularities do not make proceedings invalid
Subject to this Code, any judgment, sentence or order passed or made by a court of competent jurisdiction may not be reversed or altered on account of —
(a)
an error, omission or irregularity in the complaint, summons, warrant, charge, judgment or other proceedings before or during trial or in an inquiry or other proceeding under this Code;
(b)
the lack of any consent by the Public Prosecutor as required by law; or
(c)
the improper admission or rejection of any evidence,unless the error, omission, improper admission or rejection of evidence, irregularity or lack of consent has caused a failure of justice.