From 6be8a839ce5a759b3f94a15f02841d9f6138a633 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 18 Apr 2008 15:01:36 +0000
Subject: [PATCH] 2008-04-18	Joel Sherrill <joel.sherrill@oarcorp.com>

	* posix/src/key.c: Include <limits.h>
	* posix/src/psignal.c, rtems/src/tasks.c: Do not attempt to process
	a NULL extension block.
---
 cpukit/ChangeLog           | 6 ++++++
 cpukit/posix/src/key.c     | 1 +
 cpukit/posix/src/psignal.c | 2 ++
 cpukit/rtems/src/tasks.c   | 2 ++
 4 files changed, 11 insertions(+)

diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 191daf509e..8ff08b3cc6 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,9 @@
+2008-04-18	Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* posix/src/key.c: Include <limits.h>
+	* posix/src/psignal.c, rtems/src/tasks.c: Do not attempt to process
+	a NULL extension block.
+
 2008-04-17	Joel Sherrill <joel.sherrill@oarcorp.com>
 
 	* libmisc/dummy/dummy.c, sapi/include/confdefs.h: Add checks for
diff --git a/cpukit/posix/src/key.c b/cpukit/posix/src/key.c
index 3b4776817b..42d2aeb805 100644
--- a/cpukit/posix/src/key.c
+++ b/cpukit/posix/src/key.c
@@ -17,6 +17,7 @@
 #include <limits.h>
 #include <pthread.h>
 #include <string.h>
+#include <limits.h>
 
 #include <rtems/system.h>
 #include <rtems/score/thread.h>
diff --git a/cpukit/posix/src/psignal.c b/cpukit/posix/src/psignal.c
index 62500ba4a5..a6c096caa7 100644
--- a/cpukit/posix/src/psignal.c
+++ b/cpukit/posix/src/psignal.c
@@ -108,6 +108,8 @@ void _POSIX_signals_Post_switch_extension(
   ISR_Level           level;
 
   api = the_thread->API_Extensions[ THREAD_API_POSIX ];
+  if ( !api )
+    return;
 
   /*
    *  If we invoke any user code, there is the possibility that
diff --git a/cpukit/rtems/src/tasks.c b/cpukit/rtems/src/tasks.c
index cfa849c1ae..afde09a704 100644
--- a/cpukit/rtems/src/tasks.c
+++ b/cpukit/rtems/src/tasks.c
@@ -174,6 +174,8 @@ void _RTEMS_tasks_Post_switch_extension(
   Modes_Control      prev_mode;
 
   api = executing->API_Extensions[ THREAD_API_RTEMS ];
+  if ( !api )
+    return;
 
   /*
    *  Signal Processing