Re: [RFC] Adding a real HashTable implementation to gnulib

[Florian Weimer]

* Tim Rühsen:

> But I still wonder why
>
>  - nested functions need an executable stack (why does the code have to
> be run on the stack ?)

The static chain pointer needs to be passed to the nest function, but
most ABIs only have a code pointer.  So a trampoline is written to the
stack which sets up the static chain (in a hidden function argument) and
calls the implementation.  The address of the trampoline is used as the
code pointer for the nested function.

>  - there are no efforts to standardize either nested functions or blocks
> (clang has 'blocks' instead of nested functions) or both. (There is a
> C22 panel, but I couldn't find anything useful on their task list.)

You can simply use C++.  C++11 and later have std::function and lambdas.

The standardization of lambdas for C has been abandoned, as far as I
know.

Thanks,
Florian