call_function_by_hand doesn't restore target async?

[Doug Evans]

On Thu, Dec 4, 2008 at 1:23 PM, Pedro Alves <pedro@codesourcery.com> wrote:
> In practice, and
> especially with non-stop mode, making infcalls async is ranging somewhere
> from hard to impossible.

If that's the general consensus, at least for now, would there be any
objection to submitting a patch that has call_function_by_hand invoke
proceed() in a TRY_CATCH?  After cleaning things up it could rethrow.
It would greatly simplify the semantic load of what one has to deal
with there, and allow for easier fixing of some bugs in the process.