sysutils/coreutils: Fix build with clang 18

PR:		277280
Approved by:	maintainer

sysutils/coreutils/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	coreutils
 PORTVERSION=	9.4
+PORTREVISION=	1
 CATEGORIES=	sysutils textproc
 MASTER_SITES=	GNU
 

sysutils/coreutils/files/patch-lib_posixtm.c

@@ -0,0 +1,24 @@
+commit 67c298c36f69b6906840b7584be06b7b5f33f829
+Author: Paul Eggert <eggert@cs.ucla.edu>
+Date:   2024-01-16T17:21:08-08:00
+
+    posixtm: pacify clang 18
+
+    Problem reported by Khem Raj in:
+    https://lists.gnu.org/r/bug-gnulib/2024-01/msg00045.html
+    * lib/posixtm.c (posixtime): Pacify clang 18 by converting bool to int.
+    Arguably this is a bug in draft C2x, since the non-pointer args to
+    ckd_add should promote just like any other expressions do;
+    but thats not clangs fault.
+
+--- lib/posixtm.c.orig	2023-01-01 13:39:11 UTC
++++ lib/posixtm.c
+@@ -191,7 +191,7 @@ posixtime (time_t *p, const char *s, unsigned int synt
+              | (tm0.tm_min ^ tm1.tm_min)
+              | (tm0.tm_sec ^ tm1.tm_sec)))
+         {
+-          if (ckd_add (&t, t, leapsec))
++          if (ckd_add (&t, t, +leapsec))
+             return false;
+           *p = t;
+           return true;