Submitted by: @asfernandes

Is related to QA571

Suppose you want to execute this block using an API function, and the attachment charset is UTF8.

execute block (c varchar(10) character set win1252 = ?) returns (n integer)
as
begin
n = octet_length(c);
suspend;
end

You then pass a parameter with the value '123áé456'. It returns 10 but the correct is 8, as the string must be converted to WIN1252 and evaluated as it.

But now the engine replaces the character set and insert some casts (when needed) to validate domain-based parameters.

I suppose problems could also appear if the parameters uses insensitive collations.

Commits: e2f2a24