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Re: [Chicken-janitors] #1399: Scrutinizer produces incorrect procedure t


From: Chicken Trac
Subject: Re: [Chicken-janitors] #1399: Scrutinizer produces incorrect procedure types after merge
Date: Tue, 10 Oct 2017 16:42:55 -0000

#1399: Scrutinizer produces incorrect procedure types after merge
------------------------------------+--------------------
            Reporter:  LemonBoy     |      Owner:
                Type:  defect       |     Status:  new
            Priority:  major        |  Milestone:  4.13.0
           Component:  scrutinizer  |    Version:  4.12.0
          Resolution:               |   Keywords:
Estimated difficulty:  medium       |
------------------------------------+--------------------

Comment (by megane):

 My understanding is that it is always safe to go for more general type. In
 this case `procedure` or even just `*` would be ok too. And N >= 0 is more
 general than N >= 1.

 Notice that `(procedure (#!rest))` does not specify return type. This is
 different from `*`.

 Indeed, it would be interesting to know if there was any downsides if in
 this case the union was left as it is. Maybe it would make the scrutinizer
 slower..

--
Ticket URL: <https://bugs.call-cc.org/ticket/1399#comment:2>
CHICKEN Scheme <https://www.call-cc.org/>
CHICKEN Scheme is a compiler for the Scheme programming language.

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