From 864f43ae09d18b1114d5c894e836698743e4e44c Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 6 Sep 2022 21:36:35 -0700
Subject: [PATCH] sntp: Fix types in check for pthread_detach

New compilers are stricter and flag assigning NULL to pthread_t as error
therefore using a pthread_t variable constructed from -1

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 sntp/m4/openldap-thread-check.m4 | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/sntp/m4/openldap-thread-check.m4 b/sntp/m4/openldap-thread-check.m4
index 7768a5c..b9e54ad 100644
--- a/sntp/m4/openldap-thread-check.m4
+++ b/sntp/m4/openldap-thread-check.m4
@@ -262,10 +262,7 @@ pthread_rwlock_t rwlock;
 				dnl save the flags
 				AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <pthread.h>
-#ifndef NULL
-#define NULL (void*)0
-#endif
-]], [[pthread_detach(NULL);]])],[ol_cv_func_pthread_detach=yes],[ol_cv_func_pthread_detach=no])
+]], [[pthread_detach((pthread_t)-1);]])],[ol_cv_func_pthread_detach=yes],[ol_cv_func_pthread_detach=no])
 			])
 
 			if test $ol_cv_func_pthread_detach = no ; then
-- 
2.37.3