From 7effecf87173a122c95427dafa971abbbdba3493 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 24 Mar 2012 02:47:20 +0100
Subject: Fix issig crash at boot

* linux/dev/glue/misc.c (issig): Return 0 if current_thread() is NULL.
---
 linux/dev/glue/misc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/linux/dev/glue/misc.c b/linux/dev/glue/misc.c
index f25d501b..77dc31dd 100644
--- a/linux/dev/glue/misc.c
+++ b/linux/dev/glue/misc.c
@@ -121,6 +121,8 @@ linux_to_mach_error (int err)
 int
 issig ()
 {
+  if (!current_thread())
+    return 0;
   return current_thread ()->wait_result != THREAD_AWAKENED;
 }
 
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