From c4d9af947e0036e38abe8853477a637d3732c7c8 Mon Sep 17 00:00:00 2001
From: Vasco Ferreira <vasco.ferreira@quantummotion.tech>
Date: Fri, 25 Sep 2026 12:33:20 +0100
Subject: [PATCH] fix(trotter): patch broken statesList

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

diff --git a/quest/src/api/trotterisation.cpp b/quest/src/api/trotterisation.cpp
index 6fd5781ba..517e9d529 100644
--- a/quest/src/api/trotterisation.cpp
+++ b/quest/src/api/trotterisation.cpp
@@ -110,7 +110,7 @@ void internal_applyAllTrotterRepetitions(
     // prepare control-qubit lists once for all invoked gadgets below
     auto ketCtrlsList = lists_getList64(controls, numControls);
     auto braCtrlsList = (qureg.isDensityMatrix)? util_getBraQubits(ketCtrlsList, qureg) : lists_getEmptyList64();
-    auto statesList = lists_getList64(states, numControls * (states != nullptr));
+    auto statesList = util_getList64OrAllOnes(states, numControls);
 
     qcomp arg = angle / reps;