From 482a1b08a7a71251c2ca5ebf243d3c2acae1c329 Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Thu, 14 Feb 2019 12:40:25 +0000
Subject: [PATCH] ENH: scotchDecomp: check validity of processorWeights. Fixes
 #1207.

---
 src/parallel/decompose/ptscotchDecomp/ptscotchDecomp.C | 9 +++++++++
 src/parallel/decompose/scotchDecomp/scotchDecomp.C     | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/parallel/decompose/ptscotchDecomp/ptscotchDecomp.C b/src/parallel/decompose/ptscotchDecomp/ptscotchDecomp.C
index 72f79977ec..2845c57c4b 100644
--- a/src/parallel/decompose/ptscotchDecomp/ptscotchDecomp.C
+++ b/src/parallel/decompose/ptscotchDecomp/ptscotchDecomp.C
@@ -718,6 +718,15 @@ Foam::label Foam::ptscotchDecomp::decompose
                 << processorWeights
                 << endl;
         }
+
+        if (processorWeights.size() != nDomains_)
+        {
+            FatalIOErrorInFunction(coeffsDict_)
+                << "processorWeights not the same size"
+                << " as the wanted number of domains " << nDomains_
+                << exit(FatalIOError);
+        }
+
         check
         (
             SCOTCH_archCmpltw
diff --git a/src/parallel/decompose/scotchDecomp/scotchDecomp.C b/src/parallel/decompose/scotchDecomp/scotchDecomp.C
index e5da307cf7..f0c51a31d0 100644
--- a/src/parallel/decompose/scotchDecomp/scotchDecomp.C
+++ b/src/parallel/decompose/scotchDecomp/scotchDecomp.C
@@ -349,6 +349,14 @@ Foam::label Foam::scotchDecomp::decomposeSerial
             Info<< "scotchDecomp : Using procesor weights " << processorWeights
                 << endl;
         }
+        if (processorWeights.size() != nDomains_)
+        {
+            FatalIOErrorInFunction(coeffsDict_)
+                << "processorWeights not the same size"
+                << " as the wanted number of domains " << nDomains_
+                << exit(FatalIOError);
+        }
+
         check
         (
             SCOTCH_archCmpltw