From c0b745f6c53cdde560c02afbdb85fb1367f59579 Mon Sep 17 00:00:00 2001
From: Lu Wang <coolwanglu@gmail.com>
Date: Thu, 17 Oct 2013 11:52:55 +0800
Subject: [PATCH] show error message for mkdtemp

---
 src/pdf2htmlEX.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/pdf2htmlEX.cc b/src/pdf2htmlEX.cc
index db8e03c..85d7254 100644
--- a/src/pdf2htmlEX.cc
+++ b/src/pdf2htmlEX.cc
@@ -11,6 +11,7 @@
 #include <limits>
 #include <iostream>
 #include <memory>
+#include <errno.h>
 
 #include <getopt.h>
 
@@ -322,10 +323,16 @@ int main(int argc, char **argv)
     //prepare the directories
     {
         char buf[] = "/tmp/pdf2htmlEX-XXXXXX";
+        errno = 0;
         auto p = mkdtemp(buf);
         if(p == nullptr)
         {
-            cerr << "Cannot create temp directory" << endl;
+            const char * errmsg = strerror(errno);
+            if(!errmsg)
+            {
+                errmsg = "unknown error";
+            }
+            cerr << "Cannot create temp directory: " << errmsg << endl;
             exit(EXIT_FAILURE);
         }
         param.tmp_dir = buf;