How large are arbitrarily large integers? (Was Re: Bitfield subtlety)
nisse at lysator.liu.se
Thu Mar 29 09:27:24 UTC 2018
Richard Biener <rguenther at suse.de> writes:
> I would be surprised if that wouldn't work everywhere - any reason
> you have doubts? To clarify, allocation would work like
> void *ptr = malloc (... + sizeof (size_t));
> ->_mp_d = (char *)ptr + sizeof (size_t);
> size_t *size = ptr;
That would give bad alignment in the case that limbs are 64 bits but
size_t only 32 bits (and the x86_64 "x32" abi is something like that,
Niels Möller. PGP-encrypted email is preferred. Keyid 368C6677.
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