From a0dbf2b1728217c42906b1df6ee996f0d2540081 Mon Sep 17 00:00:00 2001
From: Stephen Seo <seo.disparate@gmail.com>
Date: Mon, 31 Jul 2023 20:45:16 +0900
Subject: [PATCH] Emit warning: ScreenStack tries to pop when empty

---
 src/screen.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/screen.cc b/src/screen.cc
index 8cd1bcc..5d1bf4a 100644
--- a/src/screen.cc
+++ b/src/screen.cc
@@ -68,6 +68,11 @@ void ScreenStack::handle_pending_actions() {
         if (!stack.empty()) {
           stack.pop_back();
         }
+#ifndef NDEBUG
+        else {
+          std::cerr << "WARNING: Tried to pop screen when stack was empty!\n";
+        }
+#endif  // NDEBUG
         break;
       case Action::NOP:
         // Intentionally left blank.