From f840d4880df21b49514aa9c7f937ea02d1e45b7a Mon Sep 17 00:00:00 2001
From: Ting-Wei Lan <lantw44@gmail.com>
Date: Fri, 16 Jan 2015 16:14:45 +0800
Subject: HW1+: 避免在工作目錄被刪除時印出亂碼
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---
 hw1/xwrap.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw1/xwrap.c b/hw1/xwrap.c
index 85991ae..dfdf2c8 100644
--- a/hw1/xwrap.c
+++ b/hw1/xwrap.c
@@ -107,5 +107,9 @@ char* xgetcwd (void) {
 		cwd = xrealloc (cwd, size);
 	}
 
+	if (result == NULL) {
+		strncpy (cwd, "<Unknown working directory>", size - 1);
+	}
+
 	return cwd;
 }
-- 
cgit