From dwhipp@nvidia.com

Error case​:

  say "improper collapse" if 10 < (5|25) < 20;

--> rakudo 34339​: OUTPUT«improper collapse␤»

The conditional evaluates to true (and thus prints the message)! For a chained inequality term, such as this, I would expect transitive behavior to hold for a junction’s values.

I also noted that there’s a SEGV if I replace C<say> with C<die>.

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From @bbkr

(Kiev build)
[13​:58] <bbkr> rakudo​: say "improper collapse" if 10 < (5|25) < 20;
[13​:58] <p6eval> rakudo 261eb2​: OUTPUT«improper collapse␤»
[13​:59] <jnthn> bbkr​: Is that junction one actually wrong?
[14​:00] <jnthn> 10 < 25 and 5 < 20
[14​:00] <masak> jnthn​: agree.
[14​:00] <jnthn> And it's certainly defined as two calls to <
[14​:00] <jnthn> Not some kind of list infix.
[14​:01] <masak> jnthn​: it's a bit of a hybrid, I'd say. :) but your
argument still holds.
[14​:02] <masak> bbkr​: rejected.
[14​:02] <masak> bbkr​: transitive behavior does not hold when junctions
are involved.
[14​:03] <masak> junctions stubbornly refuse to do more than they were
built to do :)

The RT System itself - Status changed from 'new' to 'open'

@bbkr - Status changed from 'open' to 'rejected'