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Adám
Adám
08:48
@Dennis Could I bother you to (not on the live site, of course) enable core dumping and reproduce the problem? APL will dump a core file in the current directory. Zip the core and upload it at my.dyalog.com/#Account, then drop support an email including your my.dyalog user name.
 
3 hours later…
Adám
Adám
11:20
@Dennis Response from one of our devs:
I have looked at some documentation for stdbuf. This appears to be a mechanism by which the stdio functions are hijacked. That is OK provided they preserve our following uses:

1. We test whether stderr and stdout are talking to the same device. If so we ensure that we only fwrite() to one of them. So that buffering does not desturb the logical flow of the output. Testing for this is interesting when the streams may be connected to the same file via different mount points. We do our best. However, we do rely on doing a stat() on the file descriptor associated with the stream.
 
2 hours later…
caird coinheringaahing
caird coinheringaahing
13:46
@Dennis Thanks!
Dennis
Dennis
14:15
@Adám OK, I'll do that.
@Adám 1. STDOUT and STDERR are redirected to different files. 2. Those should all work. 3. I have no idea if fwrite is atomic, with or without stdbuf.
caird coinheringaahing
caird coinheringaahing
@Dennis Would you mind pulling Rutger again please?
Dennis
Dennis
@cairdcoinheringaahing Done.
caird coinheringaahing
caird coinheringaahing
@Dennis Thanks!
 
1 hour later…
Adám
Adám
15:26
@Dennis Thanks, we'll be expecting it :-D
SnoringFrog
SnoringFrog
15:52
@Dennis Can you add Spoon when you get a chance?
Dennis
Dennis
16:30
@Adám Files have been uploaded, email has been sent.
Potato44
Potato44
16:56
user image
I just had a weird error I haven't seen before, what was meant to be printed to stdout came as error meassages.
Dennis
Dennis
Could you share the link?
Potato44
Potato44
there is a possibility it was network related on my end, my internet dropped out a few seeconds later
tio.run/…
Dennis
Dennis
It happened only once?
Potato44
Potato44
yeah, but I've dropped out many times before without that happening, usually just get a timeout
Pavel
Pavel
@Potato44 This is why we need server-side permalinks
It took me like 10 seconds to paste that into my url bar
Potato44
Potato44
17:03
@Pavel why did you need to paste it? could you not click it?
Dennis
Dennis
Why did that take 10 seconds?
@Potato44 In incomplete transmission could cause the frontend to interpret the output or debugging information as errors. That won't happen anymore once I change the API to use JSON.
Pavel
Pavel
@Dennis Because chrome froze for that long
@Potato44 ¯\_(ツ)_/¯
Dennis
Dennis
That sounds like an issue on your end (it doesn't freeze on my phone), but server-side permalinks would be nice.
Potato44
Potato44
That link would be just short enough to fit into a post by itself. just short of 60k bytes. Good thing stack snippets let us scrape the webpage so we can generate the link using other answers.
Pavel
Pavel
17:21
You could also stick the link in a github gist, I do that sometimes
Adám
Adám
17:34
@Dennis Cool. Thanks. My colleague took it up at our devt meeting today. I'll let him know tomorrow.
Potato44
Potato44
@Pavel I don't know the max size of posts in chat, but I was referring to the size on main, we have a solution to that will last us a while.
 
1 hour later…
Dennis
Dennis
18:48
@SnoringFrog Does it have to be that interpreter? A non-circular tape of length 100 seems a bit limited...
 
2 hours later…
Dennis
Dennis
20:59
@Pavel @ConorO'Brien @Adám TIO now uses file descriptors instead of .{output,debug,error}.tio, so it's no longer possible to mess with the files.
SnoringFrog
SnoringFrog
@Dennis The only other one I've found drops the ability to change the tokens, and is part of a larger interpreter for a handful of esolangs
Conor O'Brien
Conor O'Brien
@Dennis :o cool!
Adám
Adám
@Dennis I'm not sure I understand exactly how that works, but if it does; nice.
Dennis
Dennis
The files still exist, but the file descriptors are redirected outside the sandbox, so they can no longer be accessed.
Pavel
Pavel
Lovely
Dennis
Dennis
21:02
@SnoringFrog I'd add it to this family, with the ability to change tokens.
Pavel
Pavel
Also fixes rm -rf ~
Dennis
Dennis
Yep.
Pavel
Pavel
How does 3>.error.tio work? echo >&3 gives me 3: Bad file descriptor so I'm not sure how stuff gets written there.
Dennis
Dennis
3>&- closes the file descriptor for the wrapper, so you can't write to the frontend's message box with echo >&3.
Conor O'Brien
Conor O'Brien
21:42
@Dennis Can you please pull Attache?
Pavel
Pavel
I wonder if this breaks PowerShell's third stream...
Too lazy to find out...
Dennis
Dennis
3>&- closes a file descriptor that didn't use to be open.
@ConorO'Brien Done.
Conor O'Brien
Conor O'Brien
22:34
@Dennis Thanks!
caird coinheringaahing
caird coinheringaahing
@Dennis Can you pull Add++ and Rutger when you get the chance?
Dennis
Dennis
23:20
@cairdcoinheringaahing Rutger is printing a stray (0, Operator(op = Print, arg = "Hello, World!")).
Pavel
Pavel
23:46
This is a thing you can do apparently
Man, I'm learning so many things about file descriptors today

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