src: ensure that fd 0-2 are valid on windows

Check that stdin, stdout and stderr are valid file descriptors on
Windows. If not, reopen them with 'nul' file.

Refs: https://github.com/nodejs/node/pull/875
Fixes: https://github.com/nodejs/node/issues/11656
PR-URL: https://github.com/nodejs/node/pull/11863
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

1 files changed, 13 insertions, 1 deletions

diff --git a/test/parallel/test-stdio-closed.js b/test/parallel/test-stdio-closed.js
index 98e4f980d5..2313140a26 100644
--- a/test/parallel/test-stdio-closed.js
+++ b/test/parallel/test-stdio-closed.js
@@ -3,9 +3,21 @@ const common = require('../common');
 const assert = require('assert');
 const spawn = require('child_process').spawn;
 const fs = require('fs');
+const path = require('path');
 
 if (common.isWindows) {
-  common.skip('platform not supported.');
+  if (process.argv[2] === 'child') {
+    process.stdin;
+    process.stdout;
+    process.stderr;
+    return;
+  }
+  const python = process.env.PYTHON || 'python';
+  const script = path.join(common.fixturesDir, 'spawn_closed_stdio.py');
+  const proc = spawn(python, [script, process.execPath, __filename, 'child']);
+  proc.on('exit', common.mustCall(function(exitCode) {
+    assert.strictEqual(exitCode, 0);
+  }));
   return;
 }