From 132449e4daddd5452885d4807134aab7a7a6d377 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 5 Jul 1997 08:25:58 +0000
Subject: [PATCH] Redefine/undef getusershell around inclusion of <unistd.h>
 (via system.h) so Cray's int-returning prototype doesn't conflict with our
 char*-returning one.

---
 login-utils/su.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/login-utils/su.c b/login-utils/su.c
index 96b47552d..26c65fe7b 100644
--- a/login-utils/su.c
+++ b/login-utils/su.c
@@ -75,8 +75,16 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <grp.h>
+
+/* Hide any system prototype for getusershell.
+   This is necessary because some Cray systems have a conflicting
+   prototype (returning `int') in <unistd.h>.  */
+#define getusershell _getusershell_sys_proto_
+
 #include "system.h"
 
+#undef getusershell
+
 #if HAVE_SYSLOG_H && HAVE_SYSLOG
 # include <syslog.h>
 #else