[PATCH v3] Make any 32-bit time based syscalls unavailable for TIMESIZE==64

[Florian Weimer]

* Vineet Gupta via Libc-alpha:

> On 4/13/20 2:12 PM, Vineet Gupta via Libc-alpha wrote:
>> On 4/6/20 11:54 AM, Vineet Gupta wrote:
>>> On 3/31/20 2:47 PM, Vineet Gupta via Libc-alpha wrote:
>>>> From: Vineet Gupta via Libc-alpha <libc-alpha@sourceware.org>
>>>>
>>>> An older asm-generic syscall ABI may have kernel provide 32-bit
>>>> time syscalls, so undef them to not mix 32/64 in 64-bit time regime.
>>>>
>>>> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
>>>
>>> ping !
>> 
>> ping ^2 !
>
> If this is not suitable for common code, I'd still like to add this
> as part of ARC port to safe guard against future snafus.

Have you tried to add the #undefs to fixup-asm-unistd.h?
See sysdeps/unix/sysv/linux/arm/fixup-asm-unistd.h for an example.

I have not tried if #undefs work there, but they should.  If not, we
can fix that.