* range.c (range_step): check if step can be converted to an integer.

  [ruby-dev:34558]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16256 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 2 deletions

diff --git a/range.c b/range.c
index d81db5fff5..ae172be4e7 100644
--- a/range.c
+++ b/range.c
@@ -308,11 +308,13 @@ range_step(int argc, VALUE *argv, VALUE range)
     }
     else {
 	rb_scan_args(argc, argv, "01", &step);
-	if (FIXNUM_P(step)) {
+	tmp = rb_check_to_integer(step, "to_int");
+	if (!NIL_P(tmp)) {
+	    step = tmp;
 	    unit = NUM2LONG(step);
 	}
 	else {
-	    VALUE tmp = rb_funcall(rb_funcall(b, '+', 1, step), '-', 1, b);
+	    tmp = rb_funcall(rb_funcall(b, '+', 1, step), '-', 1, b);
 	    unit = rb_cmpint(tmp, step, INT2FIX(0));
 	}
     }