JE crash with fold (F) in timex

[Arie Groeneveld]

JVERSION

Engine: j9.8.0-beta3/j64avx2/linux

Build: commercial/2026-05-14T19:48:06/clang-14-0-0/SLEEF=1

Library: 9.8.3

Qt IDE: 2.6.4s/6.10.3(6.10.3)

OS Ver: openSUSE Leap 15.6 6.4.0-150600.23.103-default

Platform: Linux 64

Installer: j9.8 install

InstallPath: /home/arie/j9.8

Contact: www.jsoftware.com

Code
====


 invent=:{{
i=.0
while. k=.+/i=y do. i=.i+1 [y=.y,k end.
y,0
}}


This works
   8 ] F. {{ invent y [ _2 Z: x <: Z:1 }} 0
0 1 1 0 2 2 2 0 3 2 4 1 1 0 4 4 4 1 4 0 ...

crash

timex 'P=:8 ] F. {{ invent y [ _2 Z: x <: Z:1 }} 0'

Also crashes in J9.7

But not in J9.6

Output in Jconsole

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 forum. 00005591eea2c202: ?:0: sigsegv 00007f263945797f: ?:0: ? 00007f263490790e: ?:0: jtfamftrav 00007f2634907dbc: ?:0: jtfamftrav 00007f26349070cf: ?:0: jttpop 00007f2634906bf2: ?:0: jtgc 00007f2634b293eb: ?:0: jttsit2 00007f263491d169: ?:0: jtunquote 00007f26349097ff: ?:0: jtparsea 00007f2634909514: ?:0: jtparse 00007f263490ebfc: ?:0: jtimmex 00007f26348f3b94: ?:0: jdo 00007f26348f395c: ?:0: JDo 00005591eea2c13f: ?:0: main 00007f2639440eeb: ?:0: __libc_start_call_main 00007f2639440fb4: ?:0: __libc_start_main_alias_1 00005591eea2b504: ?:0: _start ffffffffffffffff: ?:0: ? -----------------------------------------------------------------------------

[Arie Groeneveld]

DirectDefininition the problem?

Again no problem in J9.6.


   2 {{ x + y }} 100 200 300
102 202 302

   timex '2 {{ x + y }} 100 200 300'

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 forum.

0000560415e5b202: ?:0:  sigsegv
00007fa17bc5797f: ?:0:  ?
00007fa17710790e: ?:0:  jtfamftrav
00007fa177107dbc: ?:0:  jtfamftrav
00007fa1771070cf: ?:0:  jttpop
00007fa177106bf2: ?:0:  jtgc
00007fa1773293eb: ?:0:  jttsit2
00007fa17711d169: ?:0:  jtunquote
00007fa1771097ff: ?:0:  jtparsea
00007fa177109514: ?:0:  jtparse
00007fa17710ebfc: ?:0:  jtimmex
00007fa1770f3b94: ?:0:  jdo
00007fa1770f395c: ?:0:  JDo
0000560415e5b13f: ?:0:  main
00007fa17bc40eeb: ?:0:  __libc_start_call_main
00007fa17bc40fb4: ?:0:  __libc_start_main_alias_1
0000560415e5a504: ?:0:  _start

ffffffffffffffff: ?:0:  ?
-----------------------------------------------------------------------------

cheers
@@i

Op 29-05-2026 om 09:32 schreef Arie Groeneveld:

[Henry Rich]

Wow.  I can reproduce it.  timex '{{ }}'   also fails.  Thanks for the report.

Henry Rich

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[bill lam]

I have added this to github action testga.ijs and it crashed for all platforms.
eg windows crash log attached.

[Henry Rich]

Fixed for the next beta.  6!:2 did not set up correctly for handling {{ }} .

Henry Rich