check return value of getcwd()

1 files changed, 5 insertions, 3 deletions

diff --git a/src/config.c b/src/config.c
index 932ed2545..bd0a1e252 100644
--- a/src/config.c
+++ b/src/config.c
@@ -471,10 +471,12 @@ void configGetCommand(redisClient *c) {
     if (stringmatch(pattern,"dir",0)) {
         char buf[1024];
 
-        buf[0] = '\0';
-        getcwd(buf,sizeof(buf));
         addReplyBulkCString(c,"dir");
-        addReplyBulkCString(c,buf);
+        if (getcwd(buf,sizeof(buf)) == NULL) {
+            buf[0] = '\0';
+        } else {
+            addReplyBulkCString(c,buf);
+        }
         matches++;
     }
     if (stringmatch(pattern,"dbfilename",0)) {