From 328563488a2b61870f999cd7499df4665ca13bef Mon Sep 17 00:00:00 2001
From: DRovara <damian.rovara@tum.de>
Date: Thu, 19 Sep 2024 16:36:24 +0200
Subject: [PATCH] fix: :bug: Fix bug that makes debugger access element -1 if
 no custom gates are defined

---
 src/backend/dd/DDSimDebug.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backend/dd/DDSimDebug.cpp b/src/backend/dd/DDSimDebug.cpp
index 98b733a..f90bd2b 100644
--- a/src/backend/dd/DDSimDebug.cpp
+++ b/src/backend/dd/DDSimDebug.cpp
@@ -870,6 +870,9 @@ std::vector<std::string> getTargetVariables(DDSimulationState* ddsim,
     if (ddsim->instructionTypes[i] == RETURN) {
       break;
     }
+    if (i == 0) {
+      break;
+    }
     i--;
   }