I got a similar result. I believe this bug is related to the boolean
argument.
coercing the array to integer can work correctly.
p =. 00 + 8 2 $ 0 0 1 1 1 0 0 0 0 1 1 0 1 0 0 0
On Thu, Dec 28, 2023 at 6:02 PM Marcin Żołek <
marcin.zo...@students.mimuw.edu.pl> wrote:
> Hello,
> I was trying to run my code on j9.4 Linux, j9.4 MacOS, j9.5 MacOS and it
> crashes.
>
> In terminal
> /Applications/j9.5/bin/jconsole bug.ijs < input.txt
> JE has crashed, likely due to an internal bug. Please report the code
> which caused the crash, as well as the following printout, to the J
> programming forum.
> Could not generate stack trace: no debug info in Mach-O executable (-1)
> ...
>
> -----------------------------------------------------------------------------
> 5 3 1 1[1] 6692 abort /Applications/j9.5/bin/jconsole bug.ijs <
> input.txt
>
> bug.ijs:
> ":@((#/.~ +/@, ~.)@/:~)@(".;._2)&.stdin''
>
> input.txt:
> 0 0
> 1 1
> 1 0
> 0 0
> 0 1
> 1 0
> 1 0
> 0 0
> I figured out that the problem is with sorting:
> p =. 8 2 $ 0 0 1 1 1 0 0 0 0 1 1 0 1 0 0 0
> p
> 0 0
> 1 1
> 1 0
> 0 0
> 0 1
> 1 0
> 1 0
> 0 0
> /:~ p NB. returns various and wrong results
> 0 0
> 0 0
> 0 0
> 1 0
> 1 0
> 1 0
> 1 1
> 1 1
>
> or
>
> 0 0
> 0 0
> 0 0
> 1 0
> 1 0
> 1 0
> 0 0
> 0 0
> ~.@:/:~ p NB. crashes jqt
>
> Best regards,
> Marcin
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>
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