Update to ruby/spec@4bb0f25

* Specs added by TruffleRuby.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63654 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/ruby/core/io/write_spec.rb b/spec/ruby/core/io/write_spec.rb
index 1c48a42584..e6db3351db 100644
--- a/spec/ruby/core/io/write_spec.rb
+++ b/spec/ruby/core/io/write_spec.rb
@@ -103,7 +103,7 @@ describe "IO.write" do
     describe "on a FIFO" do
       before :each do
         @fifo = tmp("File_open_fifo")
-        system "mkfifo #{@fifo}"
+        File.mkfifo(@fifo)
       end
 
       after :each do