Ok... this is getting strange: (1) The behavior of the system under the debugger conflicts with my understanding of how the J engine functions, and
(2) That this behavior exists is seen J807 shows that it's not a consequence of J90x changes, and (3) That this behavior is reproducible by people other than myself shows it's not due to a flaw specific to only my machine, and (4) That we have seen replies to this forum showing the issue occurs under both Darwin and Windows shows that this is not an OS-specific issue ... That leaves open increasingly implausible suggestions for what's going on here (such as targeted pranks, of some sort, or severe incomprehension of how J functions on my part), but I don't know how to isolate such issues. -- Raul On Wed, Jun 15, 2022 at 2:54 AM 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 > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
