In article 6wG@online.tmx.com.au, tony@online.tmx.com.au (Tony Cook) writes:
>I've seen mentions several times in this group that the implicitly
>defined copy constructor and assignment operator for PODs will
>perform a bitwise copy, but I can't find any language in the WP to
>confirm this.
>
>Is this meant to be implied by the current wording in [class.copy],
>or is it explicitly stated somewhere?

"Bitwise copy" was a term used in the ARM, and is a convenient
shorthand. It is not precise.

The implicitly-defined copy constructor (assignment operator) will
perform a memberwise copy (assignment) for any class type. If the
member has scalar type, the built-in assignment operator is used
for both operations.

The question sometimes arises whether padding bits in a POD-struct
or POD-union are guaranteed to be copied (assigned). The answer is no,
padding bits might but might not be copied (assigned). The DWP makes no
requirement either way.

---
Steve Clamage, stephen.clamage@eng.sun.com




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I've seen mentions several times in this group that the implicitly
defined copy constructor and assignment operator for PODs will
perform a bitwise copy, but I can't find any language in the WP to
confirm this.

Is this meant to be implied by the current wording in [class.copy],
or is it explicitly stated somewhere?
--
        Tony Cook - tony@online.tmx.com.au
                    100237.3425@compuserve.com


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