JE crash for J9.6.0-beta18 and J9.5.2

[jip]

user@host:~/j9.6> LANG=C ./jconsole.sh
   JVERSION
Engine: j9.6.0-beta18/j64avx2/linux
Build: commercial/2024-09-08T21:04:26/clang-11-0-0/SLEEF=1
Library: 9.6.8
Platform: Linux 64
Installer: j9.6 install
InstallPath: /home/user/j9.6.0-beta18_j64avx2
Contact: www.jsoftware.com
   load '~temp/mt_testhetrf_crash.ijs'
   testhetrf_mt_ ''
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.
0000000000403132: ?:0:  sigsegv
00007fa106ca9dbf: ?:0:  ?
00007fa102724269: ?:0:  jtprobelocal
00007fa102724eec: ?:0:  jtsyrd
00007fa102725b8f: ?:0:  jtsymbrd
00007fa10261fded: ?:0:  jtunname
00007fa1026219c1: ?:0:  jtinvamp
00007fa102621003: ?:0:  jtinv
00007fa1026c15f9: ?:0:  jtinv2
00007fa1026a54b9: ?:0:  fork100
00007fa102726704: ?:0:  jtunquote
00007fa10271392e: ?:0:  jtparsea
00007fa1026dc50f: ?:0:  jtxdefn
00007fa10271392e: ?:0:  jtparsea
00007fa1026dc50f: ?:0:  jtxdefn
00007fa102726b90: ?:0:  jtunquote
00007fa10271392e: ?:0:  jtparsea
00007fa10271362c: ?:0:  jtparse
00007fa102718b4c: ?:0:  jtimmex
00007fa1026fe73d: ?:0:  jdo
00007fa1026fe51d: ?:0:  JDo
000000000040306f: ?:0:  main
00007fa106c9424c: ?:0:  __libc_start_main
00000000004024dd: ?:0:  _start
ffffffffffffffff: ?:0:  ?
-----------------------------------------------------------------------------
./jconsole.sh: line 6:  2975 Aborted                 (core dumped) bin/jconsole "$@"

The same is for:

   JVERSION
Engine: j9.5.2/j64avx2/linux
Build: commercial/2024-02-02T18:40:26/clang-11-0-0/SLEEF=1
Library: 9.5.6
Platform: Linux 64
Installer: j9.5 install
InstallPath: /home/user/j9.5.2_j64avx2
Contact: www.jsoftware.com

This error will gone if calcA verb definition is moved out from testhetrf monad.
mt_testhetrf_crash.ijs.txt

[jip]

Is fixed in J9.6.0-beta19.