🚀 go-pugleaf

In article <lbc3neINNtt@news.bbn.com> langevin@indian.bbn.com. (Tim Langevin) writes:
>   Is the following piece of code conforming ANSI C?

I believe so, but only because you didn't do anything with the pointer you
generated.  If you want it to be a general-purpose memory allocator, then it's
conceivable that it fails when you try to use it for some type not included in
your ALL_TYPES union.

>   Is there a better way to do this?

I would omit the alignment object, and change the size of the allocation
request to be (sizeof(HEADER)+ALIGN-1)/ALIGN*ALIGN + user_size, where ALIGN is
a constant that you configure appropriately on each system.  (This is how
malloc() itself is often written.)

It's fairly clean, and it's portable, even if it isn't strictly conforming.

Karl W. Z. Heuer (karl@ima.isc.com or uunet!ima!karl), The Walking Lint