array.c: rb_check_to_array

* array.c (rb_check_to_array): conversion to array by to_a method.
  returns nil if not possible.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62072 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/array.c b/array.c
index 5cb86f2532..a2438a3206 100644
--- a/array.c
+++ b/array.c
@@ -655,6 +655,12 @@ rb_check_array_type(VALUE ary)
     return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_ary);
 }
 
+VALUE
+rb_check_to_array(VALUE ary)
+{
+    return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
+}
+
 /*
  *  call-seq:
  *     Array.try_convert(obj) -> array or nil