From d45a991b632913de03daa2f3d8f235fa3cd4a853 Mon Sep 17 00:00:00 2001
From: Sadrul Habib Chowdhury <sadrul@users.sourceforge.net>
Date: Wed, 27 Aug 2008 16:41:15 -0400
Subject: [PATCH] Reading user input requires a foreground layer

Fixes crash from commands such as setenv, readreg, 'layout select' etc.
when starting with 'screen -md'. Detailed report at #24152, debian bug
 #496750.
---
 src/input.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/input.c b/src/input.c
index 207557a..39b2ac1 100644
--- a/src/input.c
+++ b/src/input.c
@@ -120,6 +120,9 @@ int data;
   int maxlen;
   struct inpdata *inpdata;
   
+  if (!flayer)
+    return;
+
   if (len > 100)
     len = 100;
   if (!(mode & INP_NOECHO))