Re: CONSTRAINT_ERROR - why?

["Randy Brukardt" <randy@rrsoftware.com>]

Robert Spooner wrote in message <3E01F897.20404@psu.edu>...
>Another way is to use the Max_Size_In_Storage_Elements attribute.


In general, that could be dangerous, at least when writing to the
object. Because that is the maximum number of bytes that could ever for
some object of the subtype, and nothing requires compilers to make it
accurate. Storage_Elements.Storage_Count'Last is always a correct
response for this attribute (and in some cases, the only possible
response). Also, if the object is stored in multiple parts, it might
actually be bigger than than this value.

So this value could be larger than the actual object. Obj'Size is the
safest way to find out, but then you must take care to round properly,
etc.

             Randy.