Re: [RFC, PATCH] shrink struct vectorlike_header #2

[Dmitry Antipov]

On 11/08/2012 09:25 AM, Paul Eggert wrote:

> But better yet would be to omit the casts entirely.
> This might let GCC do more optimizations safely.  That is,
> change struct Lisp_Vector to be something like this:
>
> struct Lisp_Vector
>    {
>       struct vectorlike_header header;
>       union
>         {
>            Lisp_Object contents[1];
>            struct Lisp_Vector *next;
>         } u;
>    };

This is the most clean way, but

> Replace all current uses of 'contents'
> with 'u.contents',

is it worth doing such a massive change just to avoid one little glitch?

Dmitry