From 4e0796dfc72f289e97dce3332e6186c6b00b693d Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 26 Feb 2020 10:09:32 -0500
Subject: [PATCH] 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 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/pthread.h b/include/pthread.h
index 984db680..0492f26a 100644
--- a/include/pthread.h
+++ b/include/pthread.h
@@ -74,6 +74,9 @@ extern "C" {
 #define PTHREAD_BARRIER_SERIAL_THREAD (-1)
 
 
+#define PTHREAD_NULL ((pthread_t)0)
+
+
 int pthread_create(pthread_t *__restrict, const pthread_attr_t *__restrict, void *(*)(void *), void *__restrict);
 int pthread_detach(pthread_t);
 _Noreturn void pthread_exit(void *);