marshal.c: marshal_dump instance varialbes

* marshal.c (w_object): dump instance varialbes of the result of
  marshal_dump not the original object.  [ruby-core:51163] [Bug #7627]
* complex.c (nucomp_marshal_dump): need to copy instance variables.
* rational.c (nurat_marshal_dump): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 0 deletions

diff --git a/test/ruby/test_marshal.rb b/test/ruby/test_marshal.rb
index bc5ee6295d..74f950b64c 100644
--- a/test/ruby/test_marshal.rb
+++ b/test/ruby/test_marshal.rb
@@ -517,4 +517,23 @@ class TestMarshal < Test::Unit::TestCase
       assert(!c.untrusted?, bug7325)
     end
   end
+
+  class Bug7627 < Struct.new(:bar)
+    attr_accessor :foo
+
+    def marshal_dump; 'dump'; end  # fake dump data
+    def marshal_load(*); end       # do nothing
+  end
+
+  def test_marshal_dump_struct_ivar
+    bug7627 = '[ruby-core:51163]'
+    obj = Bug7627.new
+    obj.foo = '[Bug #7627]'
+
+    dump   = Marshal.dump(obj)
+    loaded = Marshal.load(dump)
+
+    assert_equal(obj, loaded, bug7627)
+    assert_nil(loaded.foo, bug7627)
+  end
 end