io.c: open generic in binread

* io.c (rb_io_s_binread): fix r61317, unintentional change.

From: Nobuyoshi Nakada <nobu@ruby-lang.org>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61319 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 89c68b6cb2..4f6027d8c9 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2188,9 +2188,15 @@ class TestIO < Test::Unit::TestCase
     assert_warn(/invoke external command/) do
       File.read("|#{EnvUtil.rubybin} -e puts")
     end
+    assert_warn(/invoke external command/) do
+      File.binread("|#{EnvUtil.rubybin} -e puts")
+    end
     assert_raise_with_message(ArgumentError, /invoke external command/) do
       Class.new(IO).read("|#{EnvUtil.rubybin} -e puts")
     end
+    assert_raise_with_message(ArgumentError, /invoke external command/) do
+      Class.new(IO).binread("|#{EnvUtil.rubybin} -e puts")
+    end
   end
 
   def test_reopen