On windows, if you spawn a child process, it raises an exception when outputting anything

[catamphetamine]

Try to run this example on Node 0.5.9:

node parent

parent.js:

console.log('hello from parent')

var process = require('child_process').spawn("node", ["child.js"])

process.stdout.addListener('data', function (data) {
    require('sys').print(data)
    process.stdout.write(data)
})

// Error: write EINVAL
process.stderr.addListener('data', function (data) {
    require('sys').print(data)
})

child.js:

console.log('hello from child')

The child process crashes with "Error: write EINVAL" exception.

[japj]

if I remember correctly (from irc), this issue also prevents 'vows test/*.js' to be run on windows, since vows spawns a child process for each test file to be handled and parses the output to determine pass/failure of the test.

[mmalecki]

Actually, it prevents vows --isolate. --isolate spawns each file as a separate process and waits for JSON output from these processes (which fails hard on Windows).

@piscisaureus Would a test case be useful for you? I guess we want a regress for this anyway.

[byteshijinn]

you may not use 'process' as a variable name.try like this

console.log('hello from parent')

var child = require('child_process').spawn("node", ["child.js"])

child .stdout.addListener('data', function (data) {
require('util').print(data)
process.stdout.write(data)
})

[mmalecki]

@bombworm This has been confirmed with this test case and it's not a result of using process as variable name.
@piscisaureus AFAIK, it's fixed, mind closing the issue?

[catamphetamine]

Thanks for your comment, bombworm, but have your tried it yourself?
I mean, did you try launching this piece of code on Windose yourself?
Because when I launch it, the error stays the same: 'write EINVAL'

console.log('hello from parent')

var child = require('child_process').spawn("node", ["child.js"])

child.stdout.addListener('data', function (data) {
    require('util').print(data)
    process.stdout.write(data)
})

// Error: write EINVAL
child.stderr.addListener('data', function (data) {
    require('util').print(data)
})

[byteshijinn]

@kuchumovN I tried on windows with node 0.5.10 and no error appeared

[catamphetamine]

@bombworm
Oh, really, it works.
Thanks for the screenshot.
You forgot to mention, that i should update to 0.5.10.
Okay then, I'm closing the issue.