From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 24 Aug 2013 03:07:09 +0000 (-0400)
Subject: fix mishandling of empty or blank TZ environment variable
X-Git-Tag: v0.9.13~16
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=bd5ed22c58c1356f22fb69a8c392f650a0d89443;p=oweals%2Fmusl.git

fix mishandling of empty or blank TZ environment variable

the empty TZ string was matching equal to the initial value of the
cached TZ name, thus causing do_tzset never to run and never to
initialize the time zone data.
---

diff --git a/src/time/__tz.c b/src/time/__tz.c
index a76a7b48..36b59802 100644
--- a/src/time/__tz.c
+++ b/src/time/__tz.c
@@ -127,7 +127,7 @@ static void do_tzset()
 		"/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
 
 	s = getenv("TZ");
-	if (!s) s = "";
+	if (!s || !*s) s = "GMT0";
 
 	if (old_tz && !strcmp(s, old_tz)) return;