From: David Wells <wellsd2@rpi.edu>
Date: Thu, 16 Mar 2017 22:22:39 +0000 (-0400)
Subject: Check that we successfully created a directory.
X-Git-Tag: v8.5.0-rc1~25^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cdbeecc8580746359f484496f1866f754da80a2;p=dealii.git

Check that we successfully created a directory.
---

diff --git a/examples/step-42/step-42.cc b/examples/step-42/step-42.cc
index a238022859..33220e4dae 100644
--- a/examples/step-42/step-42.cc
+++ b/examples/step-42/step-42.cc
@@ -876,7 +876,8 @@ namespace Step42
     output_dir = prm.get("output directory");
     if (output_dir != "" && *(output_dir.rbegin()) != '/')
       output_dir += "/";
-    mkdir(output_dir.c_str(), 0777);
+    const int ierr = mkdir(output_dir.c_str(), 0777);
+    AssertThrow(ierr == 0, ExcIO());
 
     pcout << "    Using output directory '" << output_dir << "'" << std::endl;
     pcout << "    FE degree " << fe_degree << std::endl;