m1/patches/rtems/: pending RTEMS patches (relative to latest CVS)

m1/patches/rtems/rbtree-container-of.patch

@@ -0,0 +1,32 @@
+This issue is under consideration:
+http://www.rtems.org/pipermail/rtems-users/2011-November/009097.html
+
+There seem to be two issues in the original code:
+
+- the "node" argument of the macro is not protected, which could lead
+  to very hard to find errors (this doesn't seem to cause any
+  immediate problems just now, but it's a lousy risk to take)
+
+- more seriously, "offsetof" counts in bytes while arithmentic on the
+  "node" pointer counts in multiples of whatever size that object has
+
+RTEMS with this patch applied runs well (on Milkymist), but I don't
+know if the code in question actually is executed.
+
+- Werner
+
+Index: rtems/cpukit/score/include/rtems/score/rbtree.h
+===================================================================
+--- rtems.orig/cpukit/score/include/rtems/score/rbtree.h	2011-11-12 08:52:50.000000000 -0300
++++ rtems/cpukit/score/include/rtems/score/rbtree.h	2011-11-12 09:00:35.000000000 -0300
+@@ -90,7 +90,9 @@
+  *
+  */
+ #define _RBTree_Container_of(node,container_type, node_field_name) \
+-  ((container_type*) (node - offsetof(container_type,node_field_name)))
++  ((container_type*) ((void *) (node) - \
++    offsetof(container_type,node_field_name)))
++
+ 
+ /**
+  *  This type indicates the direction.