[esnacc-bugs] [esnacc-dev] ABI-change proposal

Sagara Wickramasekara sagaraw at gmail.com
Tue Nov 22 01:11:26 UTC 2016

Given we're making some other ABI changes, did you want to put this into
1.9 as well?

On Thu, Nov 3, 2016 at 4:01 PM, Aaron Conole <aconole at bytheb.org> wrote:

> So, for 1.10, I want to propose making a change to the esnacc lists ABI
> for the C library.
> Currently, the AsnListNode structure uses a data field as an extension
> point of the structure.  This is used throughout the code as follows:
>   foo = (Foo **)AsnListAppend();
>   *foo = Malloc(sizeof Foo)
>   Foo *RealFoo = *foo;
>   ...
> My guess is that the original authors ran into alignment issues, and
> rather than figure out how to tell each compiler that the structure
> needed to be aligned, they hacked it up and converted over to using
> pointer-to-pointer and avoid the alignment problems completely.
> Since this makes for unintuitive code, I think it best to make this ABI
> incompatible change in the 1.10 release (so, basically, let folks know
> that it will be deprecated, and make 1.10 a new ABI).
> Any opposition?  Any support?  Thoughts?
> -Aaron
> _______________________________________________
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> dev at lists.esnacc.org
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