* gc.c: fix memory leak by prepend method.

  It is easy to reproduce with such script:
    module M; def bar; end; end
    loop{
      Class.new do
        def foo; end
        prepend M
      end
    }
* gc.c (obj_free): free T_ICLASS::m_tbl if it is created by prepend.
  To recognize it, check RICLASS_IS_ORIGIN flag.
* gc.c (gc_mark_children): T_ICLASS objects only need to mark
  T_ICLASS::m_tbl if RICLASS_IS_ORIGIN is set.
* gc.c (obj_memsize_of): count T_ICLASS if RICLASS_IS_ORIGIN is set.
* internal.h (RCLASS_SET_ORIGIN): add to set RCLASS_SET_ORIGIN.
  TODO: The word `origin' seems not good name. We need to invent
  another good name.
* class.c: use RCLASS_SET_ORIGIN().
* class.c (class_alloc): zero clear rb_classext_t.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49931 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 31 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 1a6f0139b7..df19eb1341 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,34 @@
+Wed Mar 11 17:03:20 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c: fix memory leak by prepend method.
+
+	  It is easy to reproduce with such script:
+
+	    module M; def bar; end; end
+	    loop{
+	      Class.new do
+	        def foo; end
+	        prepend M
+	      end
+	    }
+
+	* gc.c (obj_free): free T_ICLASS::m_tbl if it is created by prepend.
+	  To recognize it, check RICLASS_IS_ORIGIN flag.
+
+	* gc.c (gc_mark_children): T_ICLASS objects only need to mark
+	  T_ICLASS::m_tbl if RICLASS_IS_ORIGIN is set.
+
+	* gc.c (obj_memsize_of): count T_ICLASS if RICLASS_IS_ORIGIN is set.
+
+	* internal.h (RCLASS_SET_ORIGIN): add to set RCLASS_SET_ORIGIN.
+
+	  TODO: The word `origin' seems not good name. We need to invent
+	  another good name.
+
+	* class.c: use RCLASS_SET_ORIGIN().
+
+	* class.c (class_alloc): zero clear rb_classext_t.
+
 Wed Mar 11 13:28:49 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in: check also procstat_getvmmap, which is not