Are there any advantages in using const parameters with an ordinal type?

Question

I know marking string parameters as const can make a huge performance difference, but what about ordinal types? Do I gain anything by making them const

Answer 1

Declaring ordinal types const makes no difference because they are copied anyway (call-by-value), so any changes to the variable do not affect the original variable.

procedure Foo (Val : Integer)
begin
Val := 2;
end;
...
SomeVar := 3;
Foo (SomeVar);
Assert (SomeVar = 3);

IMHO declaring ordinal types const makes no sense and as you say requires you to introduce local variables often.