From 7a3a5c2a27e022112b02ada7229e44c736a3b008 Mon Sep 17 00:00:00 2001
From: ralfulrich <ralf.ulrich@kit.edu>
Date: Wed, 27 Oct 2021 12:57:15 +0200
Subject: [PATCH] missing fwd decl
---
corsika/modules/sibyll/InteractionModel.hpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/corsika/modules/sibyll/InteractionModel.hpp b/corsika/modules/sibyll/InteractionModel.hpp
index 16b713696..58b9d36e1 100644
--- a/corsika/modules/sibyll/InteractionModel.hpp
+++ b/corsika/modules/sibyll/InteractionModel.hpp
@@ -15,6 +15,8 @@
namespace corsika::sibyll {
+ class FourMomentum; // fwd-decl
+
/**
* @brief sibyll::InteractionModel provides the SIBYLL proton-nucleus interaction model.
*
--
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