This occurs in j902 and j903 beta-f:
":`2:`3:`4: @. +/(=<.)3 3%~"(0 1) 1+i.20
Segmentation fault (core dumped)
These near variations all avoid the segfault:
":`2:`3:`4: @.] +/(=<.)3 3%~"(0 1) 1+i.20
|rank error
":`2:`3:`4: @. (+/(=<.)3 3%~"(0 1) 1+i.20)
": (": 3: ": ": 3: ": ": 3: ": ": 3: ": ": 3: ": ": 3: ": ":)
1:`2:`3:`4: @. +/(=<.)3 3%~"(0 1) 1+i.20
|rank error
":`2:`3:`4: @. +/(=<.)3 3%~"(0 1) 1+i.8
|domain error
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
