talk.tryitonline.net

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Martin Ender

9:33 AM

@Dennis already had to fix a few bugs, so feel free to pull alice whenever you get around to it.

2 hours later…

Erik the Outgolfer

11:56 AM

@ГригорийПерельман virtualbox.org

Virtualbox lets you emulate an OS (guest OS) inside another OS (host OS). You can do whatever you wanna do in a guest OS, just remember to take snapshots. Of course TIO is secure enough that it won't run its destruction ;) You can also make different machines.

3 hours later…

Dennis

2:54 PM

@MartinEnder Done.

Martin Ender

thanks :)

Martin Ender

3:40 PM

aaaaaahhhhh, Error 400, we're all doomed

actually, it's just my browser apparently

or it's just working again, can't tell

1 hour later…

Dennis

4:53 PM

@MartinEnder Hm, assuming my CGI script actually threw the error, 400 would mean the token your browser generated an invalid token. Not sure how that could have happened...

fergusq

5:32 PM

@Dennis I get error 400 for every Charcoal program. For example, this gives me an error.

Does it have something to do with unicode characters?

Dennis

@fergusq Hm, that doesn't error for me. What browser are you using?

fergusq

@Dennis Firefox

Dennis

Yes, it error in Firefox. Great...

@fergusq Should be fixed.

And now I gotta fix it for IE...

Hopefully works in all major browsers now.

> array = [1,2,3,4]; typedArray = new Uint32Array(array); undefined
< undefined

Chrome / Edge
=============
> String(array)
< "1,2,3,4"
> String(typedArray)
< "1,2,3,4"
> typedArray.join(',')
< "1,2,3,4"

Firefox
=======
> String(array)
< "1,2,3,4"
> String(typedArray)
< "[object Uint32Array]"
> typedArray.join(',')
< "1,2,3,4"

Internet Explorer
=================
> String(array)
< "1,2,3,4"
> String(typedArray)
< "[object Uint32Array]"
> typedArray.join(',')
X Object doesn't support property or method 'join'

Lovely.

Spoiler: Array.prototype.join.call(typedArray) works everywhere.

@MartinEnder Where you using Firefox? A cache miss would throw the error, while a cache hit would not.

fergusq

6:18 PM

@Dennis It works now. Thanks :D

Dennis

To put this bug into context: every request has a secret token attached to it, so the request can be canceled by clicking the run button again. That token used to be generated by the server and sent as an HTTP header, which caused all sorts of issues if you tried to cancel the request before receiving the header, so they're generated on the client side now.

Generating 128 bits of entropy turned out to be easy, but making a string from a typed array seems to be hard...

What troubles me is that the bug was encountered from 23 unique IP addresses, yet only 3 of them said something in this chat...

Martin Ender

6:35 PM

@Dennis IE or Edge, not sure

Comrade SparklePony

6:57 PM

Almost every time I go on TIO, whenever I try to run it says that the API was updated, and that I need to reload. You are actually updating the API, right? (I use Chrome).

Dennis

I've updated the API once in the last couple of days. Looks like your browser is caching an older version for some reason...