* enum.c (sort_by_i): internally used object must not be changed

  outside.  [ruby-dev:24368]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/enum.c b/enum.c
index d066af1c25..eee0e04291 100644
--- a/enum.c
+++ b/enum.c
@@ -393,6 +393,7 @@ sort_by_i(i, ary)
 
     v = rb_yield(i);
     e = rb_assoc_new(v, i);
+    OBJ_FREEZE(e);
     rb_ary_push(ary, e);
     return Qnil;
 }