On Saturday, 1 June 2013 at 17:44:02 UTC, Rob T wrote:
> I wonder if this sort of thing would help solve another implementation problem, which is implementing very fast coroutines without the overhead seen with similar features such as fibers.

Here's some evidence that the answer to your question is "yes".
http://www.cs.arizona.edu/icon/jcon/gde97.pdf‎

On 2013-06-02 19:44, Walter Bright wrote:

> The curious question is why it never gets into the newer C and C++
> Standards.

It's like inline assembly. I think basically every compiler supports it but it's not in the standard. At least there's a compiler for each platform supporting it.

-- 
/Jacob Carlborg