Update to ruby/spec@d394dfd

2 files changed, 4 insertions, 2 deletions

diff --git a/spec/ruby/core/io/fixtures/classes.rb b/spec/ruby/core/io/fixtures/classes.rb
index 460dd62387..5cc42c9b44 100644
--- a/spec/ruby/core/io/fixtures/classes.rb
+++ b/spec/ruby/core/io/fixtures/classes.rb
@@ -164,7 +164,7 @@ module IOSpecs
       @io = io
     end
 
-    def read(size, buf=nil)
+    def read(size, buf)
       @io.read size, buf
     end
 
@@ -178,7 +178,7 @@ module IOSpecs
       @io = io
     end
 
-    def readpartial(size, buf=nil)
+    def readpartial(size, buf)
       @io.readpartial size, buf
     end
 
diff --git a/spec/ruby/core/io/fixtures/copy_in_out.rb b/spec/ruby/core/io/fixtures/copy_in_out.rb
new file mode 100644
index 0000000000..b9d4085a47
--- /dev/null
+++ b/spec/ruby/core/io/fixtures/copy_in_out.rb
@@ -0,0 +1,2 @@
+STDOUT.sync = false
+IO.copy_stream(STDIN, STDOUT)