Only for STDOUT

Author: gogainda

src/main/ruby/truffleruby/core/posix.rb

@@ -446,7 +446,9 @@ def self.write_string_native(io, string, continue_on_eagain)
               return written
             end
           else
-            raise SignalException.new(:SIGPIPE) if errno == 32
+            if errno == Errno::EPIPE::Errno && fd == 1
+              raise SignalException, :SIGPIPE
+            end
             Errno.handle_errno(errno)
           end
         end