Randomly. It didn't happen often... maybe 1 in 15 times? I think you
could open and run this program in a tab and then immediately close it:
#lang racket
(require math/bigfloat)
Do that a lot, and you might see it. :/ You'd have to reenable the
custodian shutdown callback.
On 12/10/2012 08:57 AM, Matthew Flatt wrote:
It's hard to say where the bug is, but there may be some problem in the
implementation of custodians of `register-custodian-shutdown'. Is it
repeatable?
At Thu, 06 Dec 2012 16:48:37 -0700, Neil Toronto wrote:
I just got this message on my console, I think after closing a tab,
which coincided with DrRacket hanging:
eventspace-shutdown?: contract violation
expected: eventspace?
given: #<procedure:mpfr_free_cache>
context...:
/home/neil/plt/collects/mred/private/wx/common/queue.rkt:201:0:
shutdown-eventspace!
It's obviously because of this code, which is near the top of
"math/private/bigfloat/mpfr.rkt":
(define mpfr-free-cache (get-mpfr-fun 'mpfr_free_cache (_fun -> _void)))
(define mpfr-shutdown
(register-custodian-shutdown mpfr-free-cache (λ (free) (free))))
Did I misunderstand something, or is this someone else's bug?
Neil ⊥
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