* object.c (rb_check_to_integer): backported for range_step.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@15905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/object.c b/object.c
index 5b2a255d0c..3e2fb58ab4 100644
--- a/object.c
+++ b/object.c
@@ -2200,6 +2200,19 @@ rb_to_integer(val, method)
 }
 
 VALUE
+rb_check_to_integer(VALUE val, const char *method)
+{
+    VALUE v;
+
+    if (FIXNUM_P(val)) return val;
+    v = convert_type(val, "Integer", method, Qfalse);
+    if (!rb_obj_is_kind_of(v, rb_cInteger)) {
+	return Qnil;
+    }
+    return v;
+}
+
+VALUE
 rb_to_int(val)
     VALUE val;
 {