Comment by layer8

No. As the RFC notes: “Silently deleting an ill-formed part of a string is a known security risk. Responding to that risk, Section 3.2 of [UNICODE] recommends dealing with ill-formed byte sequences by signaling an error or replacing problematic code points, ideally with "�" (U+FFFD, REPLACEMENT CHARACTER).”

I would almost always go for “signaling an error”.