[C++ PATCH] newabi runtime

[Jason Merrill]

>>>>> Mark Mitchell <mark@codesourcery.com> writes:

 Jason> This seems like a job for uncaught_exception.

 > I'm not sure quite what Jason means, so I'll make something up.

 > It is true that `uncaught_exception' has to return true during the
 > destruction of the remaining elements of the array.  I'm not sure if
 > the ABI needs to specify how that is accomplished; I don't think so.
 > (We're not going to allow linking part of one vendors standard library
 > with part of anothers, are we?)  However, that implies that
 > `uncaught_exception' cannot be inlined.

 > Nathan, please fix the destructor issue Jason mentioned, and see if
 > you make uncaught_exception return true at the right time.  I bet that
 > clearing `CP_EH_INFO->caught' while in the `catch' clause will do the
 > trick, but you should confirm that.

I also meant that we should check uncaught_exception as we enter vec_dtor
so we know whether or not one exception is OK.

We should also clear ->caught in the cleanup clause of vec_ctor, which
could be replaced with a call to vec_dtor.

Jason