Patch: -findirect-classes: Mark class next_or_version field

Patch: -findirect-classes: Mark class next_or_version field

[Bryce McKinlay]

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When a class object is created at runtime, eg with -findirect-classes, 
but loaded by the bootstrap classloader, the class can be prematurely 
collected in the case where there is a hashtable collision in the 
bootstrap classloader's loaded_classes table. The solution is to mark 
the next_or_version field, which is used as a hashtable chain.

I'm checking this in to trunk.

Bryce


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2006-07-06  Bryce McKinlay <mckinlay@redhat.com>

        * boehm.cc (_Jv_MarkObj): Mark the next_or_version field.

Index: boehm.cc
===================================================================
--- boehm.cc	(revision 115220)
+++ boehm.cc	(working copy)
@@ -167,6 +167,11 @@
       MAYBE_MARK (p, mark_stack_ptr, mark_stack_limit, c);
       p = (GC_PTR) c->aux_info;
       MAYBE_MARK (p, mark_stack_ptr, mark_stack_limit, c);
+
+      // The class chain must be marked for runtime-allocated Classes
+      // loaded by the bootstrap ClassLoader.
+      p = (GC_PTR) c->next_or_version;
+      MAYBE_MARK (p, mark_stack_ptr, mark_stack_limit, c);
     }
   else
     {