mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-11-26 00:39:43 +02:00
33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
This issue is under review:
|
|
https://www.rtems.org/bugzilla/show_bug.cgi?id=1963
|
|
|
|
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.
|