[Freeciv-Dev] Re: int -> void*, was Re: [RFC] Attaching information to objects

[David Pfitzner <dwpfitzner@xxxxxxxxx>]

Falk Hueffner <falk.hueffner@xxxxxxxxxxxxxxxxxxxxxxxx> wrote: 

> [1] It seems when using ints as keys, the current code uses the void*
> of the hash_bucket to point to the int, instead of stuffing the int
> directly into the void* (which should always be at least as large as
> an int). Is there a certain reason for this?

Is it guaranteed by the language that stuffing the int into the
void* will always work, or does it just happen to work on most
(all?) platforms?

Eg, could you have a platform on which a particular int bit pattern
happened to be invalid as a pointer value, and the implementation
happened to notice this at runtime and throw up its hands in horror?

-- David


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