libstdc++/10783: std::vector::reverse_iterator could be smaller

[paolo@gcc.gnu.org]

Synopsis: std::vector::reverse_iterator  could be smaller

State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Sun May 18 18:48:45 2003
State-Changed-Why:
    Hi. Interesting issue. For sure, a basic understanding of
    EBCO (see, f.i., Vandevoorde and Josuttis, 16.2) doesn't
    suffice to completely explain what's going on.
    Indeed, wrt v2 (as shipped with 2.95.x), reverse_iterator
    has an _Iterator member but also inherit from iterator (as
    _mandated_ by the standard).
    Nathan, could you please shed light on this?
    Thanks, Paolo.

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