BUG: realloc(p,0) should be consistent with malloc(0)

[Alejandro Colomar]

Hi Andreas,

On Wed, Jun 18, 2025 at 05:42:40PM +0200, Andreas Schwab wrote:
> On Jun 17 2025, Alejandro Colomar wrote:
> 
> > RETURN VALUE
> >
> >         If size is 0,
> >         ...
> >         either:
> >
> >             -  A null pointer shall be returned
> >                and, if ptr is not a null pointer,
> >                errno shall be set to EINVAL.
> >
> >             -  A pointer to the allocated space shall be returned,
> >                and the memory object pointed to by ptr shall be freed.
> >                 ...
> >
> 
> Note that all of this is marked obsolescent.

Note that it's marked obsolescent because ISO C has turned this into UB.
If ISO C defines the behavior again, then the obsolescence of this could
be reverted.


Have a lovely day!
Alex

-- 
<https://www.alejandro-colomar.es/>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://sourceware.org/pipermail/libc-alpha/attachments/20250618/973c27e9/attachment-0001.sig>