Re: [PATCH] <bits/syscall.h>: Use an arch-independent system call list on Linux

[Florian Weimer <fw at deneb dot enyo dot de>]

* Andreas Schwab:

> On Apr 22 2017, Florian Weimer <fw@deneb.enyo.de> wrote:
>
>> I was mistaken.  As described, it will work.  But if we only backport
>> the the system call additions to the UAPI headers used by the
>> applications, this
>>
>> #ifdef SYS_getrandom
>>   return syscall (SYS_getrandom, buf, len, 0);
>> #else
>>   errno = ENOSYS;
>>   return -1;
>> #endif
>>
>> could fail with an error that __NR_getrandom is undefined.
>
> Why?  That's defined by the UAPI headers.

I meant: If we do not rebase the UAPI headers (but backport changes as
needed), while still building glibc against the current upstream
headers (to get a complete SYS_ macro list before the backporting
happens).