From 4fe3ecefa04d7ca1321109574014950503fca5b8 Mon Sep 17 00:00:00 2001
From: Günther Deschner <gd@samba.org>
Date: Tue, 22 Feb 2011 11:57:23 +0100
Subject: s3-waf: add check for realpath() NULL arg.

Guenther
---
 source3/wscript | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'source3')

diff --git a/source3/wscript b/source3/wscript
index ddfad069df8..de626406c97 100644
--- a/source3/wscript
+++ b/source3/wscript
@@ -1268,6 +1268,27 @@ main() { dev_t dev = makedev(1,2); return 0; }
 	addmain=False,
 	msg='Checking whether the macro for makedev is available')
 
+    conf.CHECK_CODE('''
+#include <stdio.h>
+#include <limits.h>
+#include <signal.h>
+
+void exit_on_core(int ignored) {
+	exit(1);
+}
+
+main() {
+	char *newpath;
+	signal(SIGSEGV, exit_on_core);
+	newpath = realpath("/tmp", NULL);
+	exit((newpath != NULL) ? 0 : 1);
+}
+''',
+	'REALPATH_TAKES_NULL',
+	addmain=False,
+	execute=True,
+	msg='Checking whether the realpath function allows a NULL argument')
+
     default_static_modules=TO_LIST('''pdb_smbpasswd pdb_tdbsam pdb_wbc_sam
                                       auth_sam auth_unix auth_winbind auth_wbc auth_server
                                       auth_domain auth_builtin vfs_default
-- 
cgit