[cfe-dev] increase size of function pointer?

[ret val]

I  mean pointers to functions unfortunately. I guess this will be more
interesting that I thought. Any specific advice?

Thank again

On Wed, Jun 1, 2011 at 5:55 PM, John McCall <rjmccall at apple.com> wrote:

> On Jun 1, 2011, at 12:48 PM, ret val wrote:
> > I would like to be able to increase the size allocated for normal
> function pointers so they each fill a entire (virtual memory) page.
>
> Do you mean that you want each *function* to occupy its own
> VM page, or do you really mean that you want function *pointers*
> to grow from 4-8 bytes apiece to 4KB?
>
> The best way of doing the former is to specify a huge alignment for
> the function.  The latter is likely to break a lot of code that assumes
> (yes, technically contrary to the standards) that function pointers
> can be losslessly cast to, say, void*.
>
> John.
>
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