pthread_cancel and EH: let's try this again

[Alexander Terekhov]

"Nathan (Jasper) Myers" wrote:
[...]
> If we don't rescue the libraries

That's not what you're after. You want magically turn cancel-unaware
stuff into cancel-safe. That's impossible. You should simply accept 
the limitation of cancel-unaware libraries and let the clients ensure 
that such code won't get canceled. Clients can use "cancel_off_guard" 
around calls to such libraries or (it would be much better in my 
theory) use ES fences and/or no_cancel{} scopes with the same effect 

http://groups.google.de/group/comp.std.c++/msg/8e15996a760d7ea4

and rely on intelligent cancel delivery.

regards,
alexander.