From 45e90ac2f86ae083a8582676bbc0f8af84b879e0 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Thu, 8 Aug 2024 04:37:59 -0400
Subject: [PATCH] must not access thermo class, if not yet created

---
 src/input.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/input.cpp b/src/input.cpp
index 826b1821d5..c3409f13ff 100644
--- a/src/input.cpp
+++ b/src/input.cpp
@@ -884,7 +884,7 @@ int Input::execute_command()
 void Input::clear()
 {
   if (narg > 0) error->all(FLERR,"Illegal clear command: unexpected arguments but found {}", narg);
-  output->thermo->set_line(-1);
+  if (output->thermo) output->thermo->set_line(-1);
   lmp->destroy();
   lmp->create();
   lmp->post_create();