Re: Missing <stdlib.h> include in lib/autoconf/c.m4

Sam James <[email protected]> Fri, 11 Nov 2022 03:28:33 +0000

Newsgroups	dev.linux.lists.c-std-porting
Message-ID	<[email protected]>


> On 11 Nov 2022, at 03:25, Zack Weinberg <[email protected]> wrote:
> 
> On Thu, Nov 10, 2022, at 10:18 PM, Sam James wrote:
>>> On 5 Nov 2022, at 22:37, Sam James <[email protected]> wrote:
>>> 
>>> I would send a patch for the original issue but I'm wondering how to handle freestanding (see big comment above _AC_C_C89_TEST_GLOBALS).
> 
> Yeah, we can't include <stdlib.h> here, but it should be OK to add a manual declaration of free (as I did in bf5a75...) -- there was already a manual declaration of malloc, and free doesn't even need size_t.
> 
> 

Thanks for doing that.

>>> We need another one (<assert.h>) I think for _Static_assert in _AC_C_C11_TEST_GLOBALS too, up until C23?
> 
> I think this should be fine as is; in C11, _Static_assert is a keyword / special form, so it's safe to use without <assert.h>.  IIUC the change in C23 is to make static_assert also available without <assert.h>?
> 

Oh right! We're all good then.

Cheers,
sam

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