From 3230f367b09e5b9476253176fa51123e90acb5d2 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 26 Aug 2014 12:48:16 -0700
Subject: [PROPOSED PATCH 2/4] * localtime.c (zoneinit, tzalloc): Return NULL
 on failure.

Suggested by Jonathan Lennox in:
http://mm.icann.org/pipermail/tz/2014-August/021529.html
---
 localtime.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/localtime.c b/localtime.c
index e294a9e..2434167 100644
--- a/localtime.c
+++ b/localtime.c
@@ -1191,7 +1191,7 @@ zoneinit(struct state *sp, char const *name)
       strcpy(sp->chars, gmt);
     } else if (! (tzload(name, sp, true)
 		  || (name && name[0] != ':' && tzparse(name, sp, false))))
-      gmtload(sp);
+      return NULL;
   }
   return sp;
 }
@@ -1264,7 +1264,10 @@ timezone_t
 tzalloc(char const *name)
 {
   timezone_t sp = malloc(sizeof *sp);
-  return zoneinit(sp, name);
+  timezone_t tp = sp ? zoneinit(sp, name) : sp;
+  if (!tp)
+    free(sp);
+  return tp;
 }
 
 void
-- 
1.9.1