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

@@ -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

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>

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

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