From e42a1f6b3e687294e4cafcc51782ecf315442379 Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Mon, 2 Jul 2018 15:20:17 +0200
Subject: [PATCH] COMP: forward declarations to silence gcc-7 warnings about
 'operator<<'

---
 .../anisotropicMeshing/coordinateModification/boxScaling.H    | 4 ++++
 meshLibrary/utilities/containers/VRWGraph/VRWGraph.H          | 2 ++
 meshLibrary/utilities/containers/VRWGraphList/VRWGraphList.H  | 4 ++++
 3 files changed, 10 insertions(+)

diff --git a/meshLibrary/utilities/anisotropicMeshing/coordinateModification/boxScaling.H b/meshLibrary/utilities/anisotropicMeshing/coordinateModification/boxScaling.H
index 7c4588d..f741fa5 100644
--- a/meshLibrary/utilities/anisotropicMeshing/coordinateModification/boxScaling.H
+++ b/meshLibrary/utilities/anisotropicMeshing/coordinateModification/boxScaling.H
@@ -46,6 +46,10 @@ namespace Foam
 namespace Module
 {
 
+// Forward declarations
+class boxScaling;
+Ostream& operator<<(Ostream&, const boxScaling&);
+
 /*---------------------------------------------------------------------------*\
                          Class boxScaling Declaration
 \*---------------------------------------------------------------------------*/
diff --git a/meshLibrary/utilities/containers/VRWGraph/VRWGraph.H b/meshLibrary/utilities/containers/VRWGraph/VRWGraph.H
index 2e41776..ce5cce5 100644
--- a/meshLibrary/utilities/containers/VRWGraph/VRWGraph.H
+++ b/meshLibrary/utilities/containers/VRWGraph/VRWGraph.H
@@ -51,7 +51,9 @@ namespace Foam
 namespace Module
 {
 
+// Forward declarations
 class VRWGraph;
+Ostream& operator<<(Ostream&, const VRWGraph&);
 
 class rowElement
 {
diff --git a/meshLibrary/utilities/containers/VRWGraphList/VRWGraphList.H b/meshLibrary/utilities/containers/VRWGraphList/VRWGraphList.H
index 930c855..1f20c2c 100644
--- a/meshLibrary/utilities/containers/VRWGraphList/VRWGraphList.H
+++ b/meshLibrary/utilities/containers/VRWGraphList/VRWGraphList.H
@@ -47,6 +47,10 @@ namespace Foam
 namespace Module
 {
 
+// Forward declarations
+class VRWGraphList;
+Ostream& operator<<(Ostream&, const VRWGraphList&);
+
 /*---------------------------------------------------------------------------*\
                         Class VRWGraphList Declaration
 \*---------------------------------------------------------------------------*/
-- 
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