Hi Henry, Thanks for making J better, and for the work around!
Jan-Pieter Op zo 7 aug. 2022 om 02:57 schreef Henry Rich <[email protected]>: > > I have found a bug that this code hits, though it didn't crash for me. > I have fixed it for the next beta. > > The bug was when a modifier returns an argument unchanged. Some flag > bits got corrupted & who knows what would happen. > > The line in arofmoru > > if. L. m do. m > > would generate the situation (returning m unchanged). A possible > workaround would be to make this > > if. L. m do. {. ,: m > > to force a new block to be allocated. > > Henry Rich > > > On 8/6/2022 5:39 PM, Jan-Pieter Jacobs wrote: > > It is the file calculus.ijs in the pull request of Raul I referenced in the > > first email. > > Here's a direct link: > > https://raw.githubusercontent.com/jsoftware/math_calculus/796ddac9de3863bf6746861624bb6aad8b70b9a2/calculus.ijs > > > > Jan-Pieter > > > > > > On Sat, 6 Aug 2022, 23:31 Henry Rich, <[email protected]> wrote: > > > >> I cannot reproduce the problem. I get an error on > >> > >> load'calculus.ijs' > >> > >> What is this file? I then get a syntax error on > >> > >> -@% arofmoru armatch a arofmoru > >> > >> Henry Rich > >> > >> On 8/6/2022 5:20 PM, Jan-Pieter Jacobs wrote: > >>> Yes, > >>> > >>> load'math/calculus' NB. standard > >>> 1&o. deriv_jcalculus_ 3 > >>> 2&o. * _1"0@(1&o.) > >>> load 'calculus.ijs' NB. Raul's PR. > >>> 1&o. deriv_jcalculus_ 3 > >>> Segmentation fault (core dumped) > >>> > >>> Looks like it is in the "matches" conjunction > >>> > >>> The following segfaults in ftymes as follows: > >>> > >>> load'calculus.ijs' > >>> coinsert 'jcalculus' > >>> a=: '2&o.' arofstringu > >>> -@% matches a 1 1 0 NB. crashes > >>> > >>> matches is defined as : 2 : ' y matchsignature u arofmoru armatch v > >> arofmoru' > >>> -@% arofmoru armatch a arofmoru > >>> Segfault. > >>> > >>> This is as far as I get. I hope you can take it from here :). > >>> arofmoru and armatch are defined as follows, arofstringu and arofu are > >>> the same as in the stock math/calculus (I think). > >>> > >>> NB. u is an ar, a string or a verb > >>> arofmoru=: {{ > >>> if. 0=nc<'m' do. > >>> if. L. m do. m > >>> else. m arofstringu > >>> end. > >>> else. u f. arofu > >>> end. > >>> }} > >>> > >>> armatch=: {{ > >>> if. 0 e. x,&L. y do. x-:y > >>> elseif. x -:&$ y do. x armatch each y > >>> else. 0 > >>> end. > >>> }} > >>> > >>> Good night, > >>> Jan-Pieter > >>> > >>> Op za 6 aug. 2022 om 22:43 schreef Henry Rich <[email protected]>: > >>>> Can you supply a failing testcase? > >>>> > >>>> Henry Rich > >>>> > >>>> On 8/6/2022 4:38 PM, Jan-Pieter Jacobs wrote: > >>>>> A little dual-purpose post: today I tried out Raul's pull-request of > >>>>> 24-01-2021 (https://github.com/jsoftware/math_calculus/pull/5) for > >>>>> simplifying expressions like 1&o. deriv 4 (which seems like a great > >>>>> idea even if it goes slightly above my hat). > >>>>> > >>>>> However, I couldn't give it a proper test-drive in J904, because it > >>>>> segfaults my J when used 1&o. deriv n with n >: 3. > >>>>> > >>>>> JVERSION > >>>>> Engine: j904/j64avx/linux > >>>>> Beta-e: commercial/2022-07-16T19:22:33 > >>>>> Library: 9.04.03 > >>>>> Platform: Linux 64 > >>>>> Installer: J904 install > >>>>> InstallPath: /home/jpjacobs/j904 > >>>>> Contact: www.jsoftware.com > >>>>> > >>>>> It works in J903. > >>>>> > >>>>> Best regards, > >>>>> Jan-Pieter > >>>>> ---------------------------------------------------------------------- > >>>>> For information about J forums see http://www.jsoftware.com/forums.htm > >>>> -- > >>>> This email has been checked for viruses by AVG. > >>>> https://www.avg.com > >>>> > >>>> ---------------------------------------------------------------------- > >>>> For information about J forums see http://www.jsoftware.com/forums.htm > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >> > >> -- > >> This email has been checked for viruses by AVG. > >> https://www.avg.com > >> > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
