I get the same result as you Martin to just run <safeshow 0>.
However I think Raul’s query is what he describes if he first activates Debug
mode (Ctrl-K) BEFORE running safeshow 0, then the Assert triggers debug (the
debug input has focus),
Then you can cutback the stack and inspect ‘z’ in the J session.
Raul, here is what I see also, perhaps same as you ?
=================
z
48:R
(
$z
3 4
<"1 z
┌────┬────┬────┐
│48:R│ ( │ │
└────┴────┴────┘
a. I. z
52 56 58 82
32 40 32 32
32 32 32 32
=================
JVERSION
Engine: j902/j64avx2/darwin
Beta-l: commercial/2020-11-05T14:07:25
Library: 9.02.08
Qt IDE: 1.8.7/5.12.7(5.12.7)
Platform: Darwin 64
Installer: J902 install
InstallPath: /users/rob/j902
Contact: www.jsoftware.com
> On 15 Jun 2022, at 4:54 pm, Martin Kreuzer <[email protected]> wrote:
>
> ... and this from v8.07 (all three tests were run in JConsole):
>
> ------------------------------------------------------------
> Kid=: 1 2,_ 1,:_ _
> Key=: 94 48 92
> Red=: 0 1 1
> N=: 3
> safeshow 0
> 1
> 1
> 1
> |assertion failure: safeshow
> | 0 <N=:N-1
>
> JVERSION
> Engine: j807/j64nonavx/windows
> Release-d: commercial/2019-03-18T13:16:44
> Library: 8.07.26
> Platform: Win 64
> Installer: J807 install
> InstallPath: d:/program files (non-sys)/j64-807-nonavx
> Contact: www.jsoftware.com
> ------------------------------------------------------------
>
> - M
>
>
> At 2022-06-15 06:02, you wrote:
>
>> I am running into a problem, in J903 and J904 -- I haven't yet
>> installed earlier versions of J on this machine.
>>
>> safeshow=: 3 :0
>> assert. 0 < N=:N-1
>> z=. ''
>> assert. 1=#$z
>> echo #$z
>> 'l r'=. y{Kid
>> if. l<#Kid do.
>> z=. '(',(safeshow l),') '
>> assert. 1=#$z
>> echo #$z
>> end.
>> z=. z,(":y{Key),':','BR'{~y{Red
>> assert. 1=#$z
>> echo #$z
>> if. r<#Kid do.
>> z=. z,' (',(safeshow r),')'
>> assert. 1=#$z
>> echo #$z
>> end.
>>
>>
>> Kid=: 1 2,_ 1,:_ _
>> Key=: 94 48 92
>> Red=: 0 1 1
>> N=: 3
>> safeshow 0
>>
>>
>>
>> |assertion failure: safeshow
>>
>> Now, there's a problem here with my data which triggers the assertion
>> -- Kid should not contain any duplicate values other than _. But
>> that's not what I am concerned with here.
>>
>> In Jqt, I enable debugging (control-K) and when the debugger pops up
>> on the assert, I go back to the previous stack frame, and I find that
>> z has rank 2, instead of rank 1.
>>
>> Specifically, it has the value '48:R',' (',:' '
>>
>> So, now I am trying to figure out what's gone wrong.
>>
>> Conceptually, I could accept that z was being modified by virtual
>> block handling -- except there's no update to z which would have given
>> it a rank 2 value.
>>
>> Another possibility here is that there's something specifically wrong
>> with my machine. So: can anyone else reproduce this issue?
>>
>> And, ... the next most likely possibility is that there's something
>> wrong with the J engine itself.
>>
>> Anyways, I'd like to get someone else's perspective here.
>>
>> Thanks,
>>
>> --
>> Raul
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
>
> ----------------------------------------------------------------------
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