2011-11-03 Martin Jambor <mjambor@suse.cz>

[pf3gnuchains/gcc-fork.git] / gcc / tree.h

diff --git a/gcc/tree.h b/gcc/tree.h
index 5dc1798..00b6637 100644 (file)
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -2686,7 +2686,9 @@ struct function;
     nodes, this points to either the FUNCTION_DECL for the containing
     function, the RECORD_TYPE or UNION_TYPE for the containing type, or
     NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
-    scope".  */
+    scope".  In particular, for VAR_DECLs which are virtual table pointers
+    (they have DECL_VIRTUAL set), we use DECL_CONTEXT to determine the type
+    they belong to.  */
 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
 #define DECL_FIELD_CONTEXT(NODE) \
   (FIELD_DECL_CHECK (NODE)->decl_minimal.context)