From efc4649f128873a0ab131902369d4e76d27ab954 Mon Sep 17 00:00:00 2001
From: Andrew Heather <>
Date: Fri, 25 Nov 2022 10:03:39 +0000
Subject: [PATCH] BUG: corrected mappedPatchBase error for multiworld
 introduced by 945405c32d

---
 .../mappedPolyPatch/mappedPatchBase.C             |  5 ++++-
 .../mappedPolyPatch/mappedPatchBaseI.H            | 15 ++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBase.C b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBase.C
index 96fe5fb199..2daa2cb6dd 100644
--- a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBase.C
+++ b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBase.C
@@ -1048,7 +1048,10 @@ void Foam::mappedPatchBase::calcMapping() const
     }
 
     updateMeshTime().setUpToDate();
-    updateSampleMeshTime().setUpToDate();
+    if (sameWorld())
+    {
+        updateSampleMeshTime().setUpToDate();
+    }
 }
 
 
diff --git a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
index 9f753e9efa..c2dbee34be 100644
--- a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
+++ b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
@@ -252,9 +252,18 @@ inline bool Foam::mappedPatchBase::upToDate() const
 {
     const polyMesh& thisMesh = patch_.boundaryMesh().mesh();
 
-    return
-        (sameWorld() && sampleMesh().upToDatePoints(updateSampleMeshTime()))
-     && thisMesh.upToDatePoints(updateMeshTime());
+    if (sameWorld())
+    {
+        return
+            sampleMesh().upToDatePoints(updateSampleMeshTime())
+         && thisMesh.upToDatePoints(updateMeshTime());
+    }
+    else
+    {
+        // If not the same world we do not know what the other side is doing
+        // so only check our local side
+        return thisMesh.upToDatePoints(updateMeshTime());
+    }
 }