From df1ba83a53d363cbd98a135d62cd778f7f9955d0 Mon Sep 17 00:00:00 2001
From: Patrick Brosi <info@patrickbrosi.de>
Date: Tue, 14 May 2019 00:46:53 +0200
Subject: [PATCH] check if tmp is null

---
 src/util/Misc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/Misc.h b/src/util/Misc.h
index 6cd667d..6bac94b 100644
--- a/src/util/Misc.h
+++ b/src/util/Misc.h
@@ -119,7 +119,7 @@ inline std::string getHomeDir() {
 inline std::string getTmpDir() {
   // first, check if an env variable is set
   const char* tmpdir = getenv("TMPDIR");
-  if (std::strlen(tmpdir)) return std::string(tmpdir);
+  if (tmpdir && std::strlen(tmpdir)) return std::string(tmpdir);
 
   // second, check if /tmp is writable
   if (access("/tmp/", W_OK) == 0) return "/tmp";