[PATCH v3 3/5] Use _dl_writev on __libc_message_impl

[Adhemerval Zanella Netto]

On 18/11/25 04:30, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> And change _dl_writev to return an negative errno in case of failure.
>> This keeps the required semantic on not setting errno in case of
>> failure and allow remove the Linux libc_fatal.c implementation.
>>
>> It also makes is simple to use writev syscall during process startup,
>> specially on i386 where it requires to disable the vDSO usage.
> 
> The second part requires moving the implementation into a .c file,
> though, and including <startup.h> when that .c file is built?

We already have a sysdeps/unix/sysv/linux/i386/dl-writev.h that handles
it from 434eca873f14f618d6c2279b54fb809fb56f2c50.