I propose once more to avoid a typo in the previous patch subject.

…
> (
> - size = E1 * E2;
> + size = array_size(E1, E2);
> |
> - size = E1 * E2 * E3;
> + size = array3_size(E1, E2, E3);
> |
> - size = E1 * E2 + E3;
> + size = struct_size(E1, E2, E3);
> )

How do you think about to use SmPL disjunctions like the following?

 size =
(
-       (E1) * (E2)
+       array_size(E1, E2)
|
-       (E1) * (E2) * (E3)
+       array3_size(E1, E2, E3)
|
-       (E1) * (E2) + (E3)
+       struct_size(E1, E2, E3)
);


>   ... when != size = E4
>       when != size += E4
…

Can it become helpful to express a constraint for a metavariable of
the type “assignment operator”?


> (
> * size = E1 * E2;@p
> |
> * size = E1 * E2 * E3;@p
> |
> * size = E1 * E2 + E3;@p
> )

*size =@p \( (E1) * (E2) \| (E1) * (E2) * (E3) \| (E1) * (E2) + (E3) \)

Regards,
Markus
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