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Re: hashx -set! and -ref


From: Gregory Marton
Subject: Re: hashx -set! and -ref
Date: Fri, 11 Jan 2008 15:34:34 -0500 (EST)

I managed to compile 1.8.3 on debian and it shows much the same error, substituting a Segmentation Fault for bus error in the last case.

Guile 1.3.4 simply returns #f in both cases.

I'm inclined to start poking at guile's source code for the first time. Could someone give me helpful pointers in the right general direction?

Thanks,
Grem


On Thu, 10 Jan 2008, Gregory Marton wrote:

I may be misunderstanding something, but I thought this should yield 'bar:

guile> (let ((ht (make-hash-table)))
        (hashx-set! (lambda (k s) 1) equal? ht 'foo 'bar)
        (hashx-ref (lambda (k s) 1) equal? ht 'foo))

#f
guile> (version)
"1.8.1"

much as this does:
guile> (let ((ht (make-hash-table)))
        (hash-set! ht 'foo 'bar)
        (hash-ref ht 'foo))
bar

I thought perhaps the problem was with the equality test somehow, but then even worse:
guile> (let ((ht (make-hash-table)))
        (hashx-set! (lambda (k s) 1) (lambda (a b) #t) ht 'foo 'bar)
        (hashx-ref (lambda (k s) 1) (lambda (a b) #t) ht 'foo))

Bus error


Thanks much,
Grem

p.s. Ludovic, I haven't forgotten about the module docs -- it's just taking me a while to learn what I need. Sorry.



--
------ __@   Gregory A. Marton                http://csail.mit.edu/~gremio/
--- _`\<,_                                                                .
-- (*)/ (*)          Back the metric system every inch of the way.
~~~~~~~~~~~~~~~~-~~~~~~~~_~~~_~~~~~v~~~~^^^^~~~~~--~~~~~~~~~~~~~~~++~~~~~~~





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