1 files changed, 36 insertions, 12 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index d10926d2c9..9637215509 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2671,19 +2671,43 @@ End
   def test_write_32bit_boundary
     bug8431 = '[ruby-core:55098] [Bug #8431]'
     make_tempfile {|t|
-      assert_separately(["-", bug8431, t.path], <<-"end;", timeout: 30)
-        msg = ARGV.shift
-        f = open(ARGV[0], "wb")
-        f.seek(0xffff_ffff)
-        begin
-          # this will consume very long time or fail by ENOSPC on a
-          # filesystem which sparse file is not supported
-          f.write('1')
-        rescue SystemCallError
-        else
-          assert_equal(0x1_0000_0000, f.tell, msg)
+      def t.close(unlink_now = false)
+        # TODO: Tempfile should deal with this delay on Windows?
+        # NOTE: re-opening with O_TEMPORARY does not work.
+        path = self.path
+        ret = super
+        if unlink_now
+          begin
+            File.unlink(path)
+          rescue Errno::ENOENT
+          rescue Errno::EACCES
+            sleep(2)
+            retry
+          end
         end
-      end;
+        ret
+      end
+
+      begin
+        assert_separately(["-", bug8431, t.path], <<-"end;", timeout: 30)
+          msg = ARGV.shift
+          f = open(ARGV[0], "wb")
+          f.seek(0xffff_ffff)
+          begin
+            # this will consume very long time or fail by ENOSPC on a
+            # filesystem which sparse file is not supported
+            f.write('1')
+            pos = f.tell
+          rescue Errno::ENOSPC
+            skip "non-sparse file system"
+          rescue SystemCallError
+          else
+            assert_equal(0x1_0000_0000, pos, msg)
+          end
+        end;
+      rescue Timeout::Error
+        skip "Timeout because of slow file writing"
+      end
     }
   end if /mswin|mingw/ =~ RUBY_PLATFORM
 end