From 0476fa64b8c655a1f76f1522aa444ddfe06281bf Mon Sep 17 00:00:00 2001
From: Aaron LI <aly@aaronly.me>
Date: Fri, 5 Oct 2018 23:04:58 +0800
Subject: [PATCH] Do not use the non-standard clearenv() (#69)

The clearenv() is not POSIX-standard, and doesn't exist on *BSD.
Directly manipulate the 'environ' instead.
---
 src/login.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/login.c b/src/login.c
index 0e20c2c..1b9bca1 100644
--- a/src/login.c
+++ b/src/login.c
@@ -268,6 +268,8 @@ enum err login_desktop(struct desktop* desktop,
 	char tty_id [3];
 	char vt[5];
 
+	extern char **environ;
+
 	display_id = get_free_display();
 	snprintf(display_name, sizeof(display_name), ":%d", display_id);
 	snprintf(tty_id, sizeof(tty_id), "%d", config.tty);
@@ -361,7 +363,7 @@ enum err login_desktop(struct desktop* desktop,
 		tb_shutdown();
 
 		// initialization
-		clearenv();
+		environ[0] = NULL;
 		init_xdg(tty_id, display_name, display_server);
 
 		// downgrades group permissions