From 7306033603e6cfdc0f09e001f5bffc005d3b73d9 Mon Sep 17 00:00:00 2001
From: Tony Kelman <tony@kelman.net>
Date: Thu, 4 Aug 2016 07:28:31 -0700
Subject: [PATCH] Fix #17805, spawn test failure on Windows

introduced by #17522

(cherry picked from commit a3f288ce54ccf66ffaebb7d31574b1ed552e0045)
ref #17815
---
 test/spawn.jl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/spawn.jl b/test/spawn.jl
index 0040630cf2016..7fa04587e3b28 100644
--- a/test/spawn.jl
+++ b/test/spawn.jl
@@ -287,7 +287,12 @@ let out = Pipe(), echo = `$exename --startup-file=no -e 'print(STDOUT, " 1\t", r
         @test_throws ArgumentError write(out, "now closed error")
         @test isreadable(out)
         @test !iswritable(out)
-        is_windows() && Base.process_events(false) # should be enough steps to fully propagate EOF now
+        if is_windows()
+            # WINNT kernel does not provide a fast mechanism for async propagation
+            # of EOF for a blocking stream, so just wait for it to catch up.
+            # This shouldn't take much more than 32ms.
+            Base.wait_close(out)
+        end
         @test !isopen(out)
     end
     wait(ready) # wait for writer task to be ready before using `out`