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+Thu Dec 6 18:23:05 2012 Shugo Maeda <shugo@ruby-lang.org>
+
+ * revised r37993 to avoid SEGV/ILL in tests. In r37993, a method
+ entry with VM_METHOD_TYPE_REFINED holds only the original method
+ definition, so ci->me is set to a method entry allocated in the
+ stack, and it causes SEGV/ILL. In this commit, a method entry
+ with VM_METHOD_TYPE_REFINED holds the whole original method entry.
+ Furthermore, rb_thread_mark() is changed to mark cfp->klass to
+ avoid GC for iclasses created by copy_refinement_iclass().
+
+ * vm_method.c (rb_method_entry_make): add a method entry with
+ VM_METHOD_TYPE_REFINED to the class refined by the refinement if
+ the target module is a refinement. When a method entry with
+ VM_METHOD_TYPE_UNDEF is invoked by vm_call_method(), a method with
+ the same name is searched in refinements. If such a method is
+ found, the method is invoked. Otherwise, the original method in
+ the refined class (rb_method_definition_t::body.orig_me) is
+ invoked. This change is made to simplify the normal method lookup
+ and to improve the performance of normal method calls.
+
+ * vm_method.c (EXPR1, search_method, rb_method_entry),
+ vm_eval.c (rb_call0, rb_search_method_entry): do not use
+ refinements for method lookup.
+
+ * vm_insnhelper.c (vm_call_method): search methods in refinements if
+ ci->me is VM_METHOD_TYPE_REFINED. If the method is called by
+ super (i.e., ci->call == vm_call_super_method), skip the same
+ method entry as the current method to avoid infinite call of the
+ same method.
+
+ * class.c (include_modules_at): add a refined method entry for each
+ method defined in a module included in a refinement.
+
+ * class.c (rb_prepend_module): set an empty table to
+ RCLASS_M_TBL(klass) to add refined method entries, because
+ refinements should have priority over prepended modules.
+
+ * proc.c (mnew): use rb_method_entry_with_refinements() to get
+ a refined method.
+
+ * vm.c (rb_thread_mark): mark cfp->klass for iclasses created by
+ copy_refinement_iclass().
+
+ * vm.c (Init_VM), cont.c (fiber_init): initialize th->cfp->klass.
+
+ * test/ruby/test_refinement.rb (test_inline_method_cache): do not skip
+ the test because it should pass successfully.
+
+ * test/ruby/test_refinement.rb (test_redefine_refined_method): new
+ test for the case a refined method is redefined.
+
Thu Dec 6 17:29:03 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* parse.y (parser_here_document): flush string content between new