merges r28187 and r28189 from trunk into ruby_1_9_2.

--
* array.c (rb_ary_product): clear uninitialized elements in temporary
  array.
--
* test/ruby/test_array.rb (test_product): test for r28187.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28277 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/array.c b/array.c
index 35335f5437..04c244a385 100644
--- a/array.c
+++ b/array.c
@@ -4308,6 +4308,7 @@ rb_ary_product(int argc, VALUE *argv, VALUE ary)
     /* initialize the arrays of arrays */
     ARY_SET_LEN(t0, n);
     arrays[0] = ary;
+    for (i = 1; i < n; i++) arrays[i] = Qnil;
     for (i = 1; i < n; i++) arrays[i] = to_ary(argv[i-1]);
 
     /* initialize the counters for the arrays */