standard violation in exception handling

[Ewgenij Gawrilow]

egcs 1.1.2 seems to produce code violating the ANSI Standard.  More exactly,
par. 15.3.16, which states:

> The exception being handled is rethrown if control reaches the end of a
> handler of the function-try-block of a constructor or destructor.

The attached program tests whether an implicit `throw' is emitted at the end of
the catch clause in A::A().