C++ PATCH: Fix 12226

[Benjamin Kosnik]

>Benjamin, I suggest that you factor these (and similar) tests by
>creating a template that you instantiate with the right types; there's
>a lot of unncessarily code duplication in these tests.  Also, your
>name is given as:
>
>  // 2003-03-26 B enjamin Kosnik  <bkoz@redhat.com>

Duly noted. As usual, those tests were added for one thing and then soon
used everywhere: I think 21/22/27 all use this kind of test.  I'll get
to this later though.

-benjamin