array.c, hash.c: add salt

* array.c (rb_ary_hash): add salt to differentiate false and empty
  array.  [ruby-core:58993] [Bug #9231]
* hash.c (rb_any_hash, rb_hash_hash): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44125 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/array.c b/array.c
index e6a45e86fd..b6d8a5584c 100644
--- a/array.c
+++ b/array.c
@@ -3792,6 +3792,7 @@ rb_ary_hash(VALUE ary)
     VALUE n;
 
     h = rb_hash_start(RARRAY_LEN(ary));
+    h = rb_hash_uint(h, (st_index_t)rb_ary_hash);
     for (i=0; i<RARRAY_LEN(ary); i++) {
 	n = rb_hash(RARRAY_AREF(ary, i));
 	h = rb_hash_uint(h, NUM2LONG(n));