* array.c (rb_ary_to_ary): do not use #respond_to? to detect

  to_ary.  Just call.  [ruby-core:23738]

* eval.c (rb_check_funcall): new function with method existence
  check.  returns Qundef when the method does not exist.

* enumerator.c (enumerator_rewind): just call method, using
  rb_check_funcall().  [ruby-core:23738]

* error.c (exc_equal): ditto.

* object.c (convert_type): ditto.

* error.c (rb_name_err_mesg_new): export function.

* eval.c (make_exception): ditto.

* io.c (pop_last_hash): return early when the last argument is nil.

* io.c (rb_io_puts): treat T_STRING specially for small
  optimization. 

* vm_eval.c (raise_method_missing): skip method call if possible
  using rb_method_basic_definition_p().

* vm_eval.c (method_missing): ditto.

* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_debug): test
  suites changed to ignore exceptions caused by just-call policy.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 3 deletions

diff --git a/enum.c b/enum.c
index 875beb9eaf..c1efb1b5c2 100644
--- a/enum.c
+++ b/enum.c
@@ -149,9 +149,10 @@ enum_count(int argc, VALUE *argv, VALUE obj)
 	    func = count_iter_i;
 	}
 	else {
-	    if (rb_respond_to(obj, id_size)) {
-		return rb_funcall(obj, id_size, 0, 0);
-	    }
+	    VALUE tmp;
+
+	    tmp = rb_check_funcall(obj, id_size, 0, 0);
+	    if (tmp != Qundef) return tmp;
 	    func = count_all_i;
 	}
     }