[PATCH] nptl: Implement pthread_self in libc.so

[Adhemerval Zanella]

On 20/12/2017 06:13, Carlos O'Donell wrote:
> 
> This version looks good to me.
> 
> Would we consider this a fix for an externally visible bug?
> Namely that a user could call pthread_self() in a program not
> linked to libpthread, and get back a 0 value which can't be
> used in subsequent POSIX thread functions without crashing?

AFAIK the pthread_* functions exported by libc.so that accept pthread_t
already handle NULL input in a somewhat consistent wat (pthread_setschedparam,
pthread_getschedparam, and pthread_equal) and it should route to libpthread
if or when the program dlopen it.  It essentially a noop operations, but 
I think it is the expected behaviour in such cases.