[PATCH] coroutines, c++: Find lambda-ness from the ramp function [PR 96517].

[Iain Sandoe]

Hi Jason,

> On 5 Nov 2021, at 20:50, Jason Merrill via Gcc-patches <gcc-patches@gcc.gnu.org> wrote:
> 
> On 11/5/21 12:01, Iain Sandoe wrote:
>> +	      || (DECL_DECLARES_FUNCTION_P (DECL_CONTEXT (decl))
>> +		  && DECL_COROUTINE_P (DECL_CONTEXT (decl))
>> +		  && DECL_RAMP_FN (DECL_CONTEXT (decl))
>> +		  && LAMBDA_FUNCTION_P (DECL_RAMP_FN (DECL_CONTEXT (decl))))));
> 
> Are there other places that want to look through DECL_RAMP_FN like this, such that this should be factored into e.g.
> 
> LAMBDA_FUNCTION_P (non_coroutine (DECL_CONTEXT (decl)))

At present, I am not aware of another use (there are none in my WIP fixes) - but that stack of macros is a bit of a mouthful - maybe  a function would be neater anyway.

non_coroutine () doesn’t convey its meaning to me - what we are trying to say “get me the ramp context” but that’s very detailed.

Let me see if I can come up with a function and a name…
Iain