There is a bug in assert. when placed inside a control structure without an argument, it does not signal a control error as expected but instead segfaults.
9!:14'' j701/beta/2010-11-24/22:45 3 : 'assert.' |control error | [0]assert. | 3 :'assert.' 3 : 'if. 1 do. assert. end.' Segmentation fault 3 : 'if. assert. do. 2 end.' Segmentation fault - The definition of 5!:7 differs from the dictionary's documented version. Compare it with the output from http://www.jsoftware.com/help/dictionary/dx005.htm perm=: 3 : 0 z=. i.1 0 for. i.y do. z=.,/(0,.1+z){"2 1\:"1=i.>:{:$z end. ) +-+---------+-------------------------------+ |0|1 65535 0|z=.i.1 0 | +-+---------+-------------------------------+ |1|17 2 1 |for. | +-+---------+-------------------------------+ |2|2 65535 1|i.y | +-+---------+-------------------------------+ |3|18 6 1 |do. | +-+---------+-------------------------------+ |4|1 65535 1|z=.,/(0,.1+z){"2 1\:"1=i.>:{:$z| +-+---------+-------------------------------+ |5|6 3 1 |end. | +-+---------+-------------------------------+ System information: $ uname -srvm Linux 2.6.32-26-generic #48-Ubuntu SMP Wed Nov 24 10:14:11 UTC 2010 x86_64 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
