From 70d36b1b4c2eb2dd93545c2f0b4bcbdc502065c7 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Sun, 22 Jun 2025 21:48:57 -0400
Subject: [PATCH] when finalizing from the fortran module we should also free
 the external fix storage

---
 fortran/lammps.f90 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fortran/lammps.f90 b/fortran/lammps.f90
index d296f7c870..74e24f3576 100644
--- a/fortran/lammps.f90
+++ b/fortran/lammps.f90
@@ -1162,6 +1162,9 @@ CONTAINS
         CALL lammps_mpi_finalize()
         CALL lammps_python_finalize()
         CALL lammps_plugin_finalize()
+        IF (ALLOCATED(ext_data)) THEN
+            DEALLOCATE(ext_data)
+        END IF
       END IF
     END IF
   END SUBROUTINE lmp_close