nobu	2018-02-01 11:56:28 +0900 (Thu, 01 Feb 2018)

  New Revision: 62150

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62150

  Log:
    win32.c: EPIPE for ERROR_NO_DATA
    
    * win32/win32.c (rb_w32_write): writing to closed pipe fails with
      ERROR_NO_DATA but msvcrt maps it to EINVAL.  map it to EPIPE.

  Modified files:
    trunk/test/ruby/test_pipe.rb
    trunk/win32/win32.c
Index: win32/win32.c
===================================================================
--- win32/win32.c	(revision 62149)
+++ win32/win32.c	(revision 62150)
@@ -7119,7 +7119,11 @@ rb_w32_write(int fd, const void *buf, si https://github.com/ruby/ruby/blob/trunk/win32/win32.c#L7119
 
     if ((_osfile(fd) & FTEXT) &&
         (!(_osfile(fd) & FPIPE) || fd == fileno(stdout) || fd == fileno(stderr))) {
-	return _write(fd, buf, size);
+	ssize_t w = _write(fd, buf, size);
+	if (w == (ssize_t)-1 && errno == EINVAL) {
+	    errno = map_errno(GetLastError());
+	}
+	return w;
     }
 
     rb_acrt_lowio_lock_fh(fd);
Index: test/ruby/test_pipe.rb
===================================================================
--- test/ruby/test_pipe.rb	(revision 62149)
+++ test/ruby/test_pipe.rb	(revision 62150)
@@ -27,4 +27,23 @@ class TestPipe < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_pipe.rb#L27
       end
     end
   end
+
+  def test_stdout_epipe
+    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      io = STDOUT
+      begin
+        save = io.dup
+        IO.popen("echo", "w", out: IO::NULL) do |f|
+          io.reopen(f)
+          Process.wait(f.pid)
+          assert_raise(Errno::EPIPE) do
+            io.print "foo\n"
+          end
+        end
+      ensure
+        io.reopen(save)
+      end
+    end;
+  end
 end

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