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treat empty TZ environment variable as GMT rather than default

this improves compatibility with the behavior of other systems and
with some applications which set an empty TZ var to disable use of
local time by mktime, etc.
Rich Felker 10 年之前
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2a780aa305
共有 1 个文件被更改,包括 2 次插入1 次删除
  1. 2 1
      src/time/__tz.c

+ 2 - 1
src/time/__tz.c

@@ -125,7 +125,8 @@ static void do_tzset()
 		"/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
 
 	s = getenv("TZ");
-	if (!s || !*s) s = "/etc/localtime";
+	if (!s) s = "/etc/localtime";
+	if (!*s) s = __gmt;
 
 	if (old_tz && !strcmp(s, old_tz)) return;