* array.c (rb_ary_modify): remember shared array owner if a shared

  array owner is promoted and a shared array is not promoted.
  Now, shared array is WB-unprotected so that shared arrays are not
  promoted.  All objects referred from shared array should be marked
  correctly.
  [ruby-core:61919] [ruby-trunk - Bug #9718]
* test/ruby/test_array.rb: add a test for above.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45553 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/array.c b/array.c
index 7249ed7112..1112a22238 100644
--- a/array.c
+++ b/array.c
@@ -343,6 +343,11 @@ rb_ary_modify(VALUE ary)
             ARY_SET_CAPA(ary, len);
             ARY_SET_PTR(ary, ptr);
         }
+
+	/* TODO: age2 promotion, OBJ_PROMOTED() checks not infant. */
+	if (OBJ_PROMOTED(ary) && !OBJ_PROMOTED(shared)) {
+	    rb_gc_writebarrier_remember_promoted(ary);
+	}
     }
 }