From 499fdccfad144aa58869d839d50edb898670626a Mon Sep 17 00:00:00 2001
From: Kevin Lamonte <kevin.lamonte@gmail.com>
Date: Tue, 22 Aug 2017 21:51:56 -0400
Subject: [PATCH] fix stack overflow

---
 src/jexer/TApplication.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/jexer/TApplication.java b/src/jexer/TApplication.java
index 4457197..b4c53ec 100644
--- a/src/jexer/TApplication.java
+++ b/src/jexer/TApplication.java
@@ -1431,9 +1431,15 @@ public class TApplication implements Runnable {
         if (activeWindow != null) {
             assert (activeWindow.getZ() == 0);
 
-            activeWindow.onUnfocus();
             activeWindow.setActive(false);
             activeWindow.setZ(window.getZ());
+
+            // Unset activeWindow now before unfocus, so that a window
+            // lifecycle change inside onUnfocus() doesn't call
+            // switchWindow() and lead to a stack overflow.
+            TWindow oldActiveWindow = activeWindow;
+            activeWindow = null;
+            oldActiveWindow.onUnfocus();
         }
         activeWindow = window;
         activeWindow.setZ(0);
-- 
2.27.0