ZOOKEEPER-1439. c sdk: core in log_env for lack of checking the output argument *pwp* of getpwuid_r (Yubing Yin via michim)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1330769 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -169,6 +169,9 @@ BUGFIXES:
 
   ZOOKEEPER-1395. node-watcher double-free redux (Mike Lundy via henryr)
    
+  ZOOKEEPER-1439. c sdk: core in log_env for lack of checking the output
+  argument *pwp* of getpwuid_r (Yubing Yin via michim)
+
 IMPROVEMENTS:
 
   ZOOKEEPER-1170. Fix compiler (eclipse) warnings: unused imports,

src/c/src/zookeeper.c

@@ -739,7 +739,7 @@ static void log_env() {
 
 #if defined(HAVE_GETUID) && defined(HAVE_GETPWUID_R)
   uid = getuid();
-  if (!getpwuid_r(uid, &pw, buf, sizeof(buf), &pwp)) {
+  if (!getpwuid_r(uid, &pw, buf, sizeof(buf), &pwp) && pwp) {
     LOG_INFO(("Client environment:user.home=%s", pw.pw_dir));
   } else {
     LOG_INFO(("Client environment:user.home=<NA>"));