From 2cf1d72640db040c32cf9fca3a54303471216c61 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Sun, 3 Mar 2019 11:56:57 +0100
Subject: [PATCH] Fix if PATH is not set

---
 src/tests/common-files/gnuplot_i.h | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/tests/common-files/gnuplot_i.h b/src/tests/common-files/gnuplot_i.h
index 5f825b8b5..7683dcba0 100644
--- a/src/tests/common-files/gnuplot_i.h
+++ b/src/tests/common-files/gnuplot_i.h
@@ -2086,12 +2086,15 @@ bool Gnuplot::get_program_path()
         {
             s << path;
         }
-    if (s.fail() or s.gcount() == 0)
+    if (s.fail())
         {
-            throw GnuplotException("PATH is not set");
+            throw GnuplotException("PATH is not well defined");
+        }
+    std::string path_str;
+    if (s.gcount() > 0)
+        {
+            path_str = s.str();
         }
-    std::string path_str = s.str();
-
     std::list<std::string> ls;
 
 //split path (one long string) into list ls of strings