Re: Use coroutines for avr-gcc

[Wilhelm Meier <wilhelm.meier@hs-kl.de>]

According to the standard, an implementation can avoid the 
heap-allocation, if
- the lifetime of the coroutine is strictly within the lifetime of the 
caller
- the size of coroutine state can be determined at compile time

Looks like this optimization is not yet available because new/delete-ops 
are required.

Is there any work on this topic?

Thanks!
  Wilhelm

On 21.09.22 15:38, Wilhelm Meier wrote:
> I tried to use coroutines with avr-gcc (13.0.0) for the AVR target. I 
> managed to include the coroutine-header and to write a very simple 
> generator using the example from cppreference.
> 
> It compiles well, but then I get undefined symbols:
> 
> 1) new and delete operator-functions
> 2) f(f()::f().Frame*)
> 
> Therefore two question arise here:
> 
> a) is it possible to use coroutines without head-allocation? E.g. define 
> some global storage for the state of the coroutine?
> b) if a) can be fullfilled, what is 2) supposed to do?
> 
> Thanks for any hints,
>   Wilhelm