add PTHREAD_NULL
authorRich Felker <dalias@aerifal.cx>
Wed, 26 Feb 2020 15:09:32 +0000 (10:09 -0500)
committerRich Felker <dalias@aerifal.cx>
Wed, 26 Feb 2020 15:09:32 +0000 (10:09 -0500)
commit4e0796dfc72f289e97dce3332e6186c6b00b693d
treefb72da5119e533e36d9c8051f37bdba6d8310871
parent7063c459e7dbd63c2c94e04413743abab5272001
add PTHREAD_NULL

this is added for POSIX-future as the outcome of Austin Group issue
599. since it's in the reserved namespace for pthread.h, there are no
namespace considerations for adding it early.
include/pthread.h