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Re: primitive type size
that is a relevant piece of information! Thanks a lot.
Based on what you've said gcc doesn't care if Linux is 32 or 64 bit (i.e.:
using ILP32 or LP64) as it just refers to the psABI. Is this correct? Do
you guys have more info on this? white paper, post, code to look, etc ?
thanks in advance.
Ono
On 5 October 2017 at 23:28, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> On 5 October 2017 at 22:31, Onorato Vaticone wrote:
> > Hi all,
> >
> > I have a question I hope you can help to clarify.
> >
> > Context: I know Unix/*Linux uses the data model LP64.
> > http://www.unix.org/version2/whatsnew/lp64_wp.html
>
> For 64-bit, yes, but ILP32 for 32-bit.
>
> > I'd like to know if gcc uses the data model information of the underlying
> > OS to decide the size of the primitive type since the C++ standard does
> not
> > dictate any size.
>
> The type sizes used by the OS are dictated by the psABI document for
> the processor. GCC follows the relevant psABI for the target.
>
--
Onorato Vaticone
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