From 016537de2f9eb1e49e8b06369da1f2a227e5f93c Mon Sep 17 00:00:00 2001
From: David Bold <dave@ipp.mpg.de>
Date: Tue, 27 Oct 2026 14:09:52 +0100
Subject: [PATCH] Add full ddt_ term

This is beneficial, as some operator directly work on the ddt - making
it difficult to track changes
---
 src/solver/impls/pvode/pvode.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/solver/impls/pvode/pvode.cxx b/src/solver/impls/pvode/pvode.cxx
index 045d83ed49..74b505e641 100644
--- a/src/solver/impls/pvode/pvode.cxx
+++ b/src/solver/impls/pvode/pvode.cxx
@@ -395,6 +395,7 @@ BoutReal PvodeSolver::run(BoutReal tout) {
 
       for (auto& f : f3d) {
         saveParallel(debug, f.name, *f.var);
+        debug[fmt::format("ddt_{}", f.name)] = *f.F_var;
       }
       bout::OptionsIO::write("BOUT.debug", debug, mesh);
       MPI_Barrier(BoutComm::get());