===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/gc/doc/debugging.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -p -r1.1 -r1.2
--- OpenXM_contrib2/asir2000/gc/doc/debugging.html	2002/07/24 08:00:16	1.1
+++ OpenXM_contrib2/asir2000/gc/doc/debugging.html	2003/06/24 05:11:38	1.2
@@ -248,8 +248,12 @@ The <TT>hb_last_reclaimed</tt> field will identify the
 during which its block was last swept.
 <LI> Verify that the offending object still has its correct contents at
 this point.
-The call <TT>GC_is_marked(p)</tt> from the debugger to verify that the
-object has not been marked, and is about to be reclaimed.
+Then call <TT>GC_is_marked(p)</tt> from the debugger to verify that the
+object has not been marked, and is about to be reclaimed.  Note that
+<TT>GC_is_marked(p)</tt> expects the real address of an object (the
+address of the debug header if there is one), and thus it may
+be more appropriate to call <TT>GC_is_marked(GC_base(p))</tt>
+instead.
 <LI> Determine a path from a root, i.e. static variable, stack, or
 register variable,
 to the reclaimed object.  Call <TT>GC_is_marked(q)</tt> for each object