From fabe25bd06e0a8f2bb26f3309ea91905f3a13ade Mon Sep 17 00:00:00 2001
From: Chris Hennes <chennes@gmail.com>
Date: Sat, 22 Mar 2025 18:14:06 -0500
Subject: [PATCH] FEM: myStudyId not needed when SMESH >= 9

Put guards not just around its use, but also its creation.
---
 src/Mod/Fem/App/FemMesh.cpp | 4 ++++
 src/Mod/Fem/App/FemMesh.h   | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/Mod/Fem/App/FemMesh.cpp b/src/Mod/Fem/App/FemMesh.cpp
index 9802d218cc..c026483702 100644
--- a/src/Mod/Fem/App/FemMesh.cpp
+++ b/src/Mod/Fem/App/FemMesh.cpp
@@ -88,7 +88,9 @@ TYPESYSTEM_SOURCE(Fem::FemMesh, Base::Persistence)
 
 FemMesh::FemMesh()
     : myMesh(nullptr)
+#if SMESH_VERSION_MAJOR < 9
     , myStudyId(0)
+#endif
 {
 #if SMESH_VERSION_MAJOR >= 9
     myMesh = getGenerator()->CreateMesh(false);
@@ -99,7 +101,9 @@ FemMesh::FemMesh()
 
 FemMesh::FemMesh(const FemMesh& mesh)
     : myMesh(nullptr)
+#if SMESH_VERSION_MAJOR < 9
     , myStudyId(0)
+#endif
 {
 #if SMESH_VERSION_MAJOR >= 9
     myMesh = getGenerator()->CreateMesh(false);
diff --git a/src/Mod/Fem/App/FemMesh.h b/src/Mod/Fem/App/FemMesh.h
index 09b7070fb8..af79553857 100644
--- a/src/Mod/Fem/App/FemMesh.h
+++ b/src/Mod/Fem/App/FemMesh.h
@@ -224,7 +224,9 @@ private:
     /// positioning matrix
     Base::Matrix4D _Mtrx;
     SMESH_Mesh* myMesh;
+#if SMESH_VERSION_MAJOR < 9
     const int myStudyId;
+#endif
 
     std::list<SMESH_HypothesisPtr> hypoth;
     static SMESH_Gen* _mesh_gen;