Re: GCC RES: Restrictive Exception Specification: 0.1 - Alpha. Feedback Request.

[Jason Merrill <jason at redhat dot com>]

Chris Lattner wrote:
> On Apr 10, 2009, at 1:55 PM, Jason Merrill wrote:
> > My impression is that the C++ committee generally feel that exception 
> > specifications are a failed feature, and nobody is particularly 
> > interested in fixing them.
>
> Have you seen this?
> http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2855.html

I've been aware of that discussion going on.  That paper proposes to 
deprecate exception specifications in favor of a new decl-specifier that 
is roughly equivalent to an empty throw-spec.  It seems unfortunate to 
me to introduce entirely new syntax for something so semantically 
similar, but I haven't really participated in the discussion.

However, since the subject is being brought forward because of the 
issues with rvalue references, this does seem like an appropriate time 
to suggest changes to the semantics of exception specifications to make 
them more suitable to dealing with this issue.

Jason