From d3fcf00d553081610e53112392440d3ff750d3e0 Mon Sep 17 00:00:00 2001
From: gmcode <gmisocpp@gmail.com>
Date: Mon, 28 Aug 2017 12:19:03 +1200
Subject: [PATCH] Small exception safety improvement.

---
 tz.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tz.cpp b/tz.cpp
index f5f3cf9..c6f7e6b 100644
--- a/tz.cpp
+++ b/tz.cpp
@@ -211,10 +211,11 @@ expand_path(std::string path)
     return date::iOSUtils::get_tzdata_path();
 #      else  // !TARGET_OS_IPHONE
     ::wordexp_t w{};
+    std::unique_ptr<::wordexp_t, void(*)(::wordexp_t*)> hold{&w, ::wordfree}; 
     ::wordexp(path.c_str(), &w, 0);
-    assert(w.we_wordc == 1);
+    if (w.we_wordc != 1)  
+        throw std::runtime_error("Cannot expand path: " + path);  
     path = w.we_wordv[0];
-    ::wordfree(&w);
     return path;
 #      endif  // !TARGET_OS_IPHONE
 }