From 795ece8bb7909846df7ca0f0ad9edf133c05b7fd Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Wed, 28 Mar 2018 11:45:28 +0100
Subject: [PATCH] ENH: writeFile: check for opening status. Fixes #783.

---
 src/OpenFOAM/db/functionObjects/writeFile/writeFile.C | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/OpenFOAM/db/functionObjects/writeFile/writeFile.C b/src/OpenFOAM/db/functionObjects/writeFile/writeFile.C
index 9c8e6f4056..ad68d9d4cd 100644
--- a/src/OpenFOAM/db/functionObjects/writeFile/writeFile.C
+++ b/src/OpenFOAM/db/functionObjects/writeFile/writeFile.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015-2017 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -114,6 +114,12 @@ Foam::autoPtr<Foam::OFstream> Foam::functionObjects::writeFile::createFile
 
         osPtr.reset(new OFstream(outputDir/(fName + ".dat")));
 
+        if (!osPtr->good())
+        {
+            FatalIOErrorInFunction(osPtr()) << "Cannot open file"
+                << exit(FatalIOError);
+        }
+
         initStream(osPtr());
     }