Is it safe to reset HOLD fiber?

[Dzugaru via Digitalmars-d-learn]

On Sunday, 3 May 2015 at 14:36:04 UTC, Martin Nowak wrote:
> On Sunday, 3 May 2015 at 12:33:36 UTC, Dzugaru wrote:
>
> Actually the documentation answers your question, please help 
> to improve it if you don't find it clear enough.
> http://dlang.org/phobos/core_thread.html#.Fiber.reset

Created a pull request with your answer added to a Fiber reset 
method description. In my opinion it should be either disallowed 
to reset the fiber in a HOLD state or clearly documented that 
stack wont be cleaned. I'm dreaded to think about random crashes 
in my app some hours after launch because of fiber reusing. Also, 
I'm not familiar with contract programming, but shouldn't the 
"in" "body" clause be included in all overloads of a reset, not 
just first?

Now I'm thinking about how to do unfinished fiber reusing 
properly. Adding "if(!isFibTerminated) return;" after every 
"Fiber.yield()" is not good :(