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2016-06-08T00:02:20Z rumbler31: I know this is true, but the debugger is complaining about failing to evaluate the load-op form in quicklisp/setup.lisp
2016-06-08T00:02:53Z rumbler31: i'm trying to figure out in the debugger where this value is being pulled but sbcl is new to me and i'm admittedly not great at this part
2016-06-08T00:03:51Z Bike: (asdf:oos 'asdf:load-op "quicklisp" :verbose nil), you mean?
2016-06-08T00:04:06Z rumbler31: yes
2016-06-08T00:06:13Z rumbler31: is it possible that some compilatoin operation was cached, and wherever the old value was captured it is now being reapplied?
2016-06-08T00:08:15Z Bike: it REQUIREs some contribs, but your new sbcl ought to know where its own contribs are. could you paste a more detailed error somewhere?
2016-06-08T00:09:57Z rumbler31: http://paste.lisp.org/display/317792
2016-06-08T00:10:23Z stassats: that's the wrong error
2016-06-08T00:11:07Z Bike: well, the actual error is farther down in the backtrace. and it does look like somehow failing to know where sb-posix is...
2016-06-08T00:14:16Z rumbler31: well the error would be that it can't find the truename of a pathname with a path I know to be wrong, so the error is that a bad value of this path is being picked up somewhere for use, if this is a symptom of a larger problem, like the system doesn't know where things really are, then
2016-06-08T00:15:16Z rumbler31: I would suspect that then sbcl doesn't know where it's being run from, and in hindisight, i imagine running from explorer might be using the sbcl_home defned at startup, not post installation
2016-06-08T00:16:27Z Bike: if you look through the sources you can see require calls module-provide-contrib calls sbcl-homedir-pathname calls (posix-getenv "SBCL_HOME")
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2016-06-08T00:19:46Z rumbler31: nm, there is an old path in my path
2016-06-08T00:21:02Z rumbler31: er, there is an old path when i look at set in the command prompt, but not in the system menu
2016-06-08T00:22:40Z rumbler31: looks like the installer makes an edit to the environment variables that the system menu can see, but that isn't visible to the shell unless you use the system menu to modify the environment
2016-06-08T00:27:38Z rumbler31: with that in place things are working
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2016-06-08T12:43:10Z DGASAU: Hit bug in SBCL 1.3.4.
2016-06-08T12:44:12Z DGASAU: I get values from (let ((a #2a(...))) (process a) (values a (aref a 0 0)))
2016-06-08T12:44:33Z DGASAU: the first value clearly indicates non-zero a_00, but the second one is zero.
2016-06-08T12:44:43Z DGASAU: CLISP returns correct values.
2016-06-08T12:45:03Z stassats: that's not how to report a bug
2016-06-08T12:45:33Z DGASAU: This is not formal report yet. :)
2016-06-08T12:45:53Z DGASAU: I'll try to extract smaller example.
2016-06-08T12:46:05Z jackdaniel: just a teaser? :-)
2016-06-08T12:46:21Z DGASAU: Sort of. ;)
2016-06-08T12:46:29Z flip214: only the trailer. right now there'll be ads coming in.
2016-06-08T12:47:03Z Xof: if you mutate a literal, you're on your own
2016-06-08T12:53:07Z DGASAU: I'd expect a warning then.
2016-06-08T12:53:32Z stassats: but how do you expect that to be achieved?
2016-06-08T12:54:11Z DGASAU: No idea currently.
2016-06-08T12:54:36Z DGASAU: Yet GCC manages to handle similar cases of "undefined behaviour."
2016-06-08T12:54:51Z stassats: use gcc then?
2016-06-08T13:00:10Z flip214: http://blog.regehr.org/archives/213   re "undefined behaviour"
2016-06-08T13:39:27Z DGASAU: Hm.
2016-06-08T13:39:42Z DGASAU: How do I copy an array then?
2016-06-08T13:39:46Z DGASAU: (Stupid question.)
2016-06-08T13:41:49Z flip214: COPY-SEQ ?
2016-06-08T13:41:58Z stassats: no
2016-06-08T13:42:02Z DGASAU: Is a matrix a sequence??
2016-06-08T13:42:20Z flip214: A VECTOR is
2016-06-08T13:42:28Z flip214: how many dimensions does it have?
2016-06-08T13:42:32Z DGASAU: 2.
2016-06-08T13:42:42Z stassats: the question was about arrays, not vectors
2016-06-08T13:42:53Z DGASAU: A matrix with 3 dimensions is interesting matrix...
2016-06-08T13:43:17Z stassats: DGASAU: do you need to copy an array or just create a fresh one?
2016-06-08T13:44:44Z DGASAU: I'm trying to understand what you suggest to work with your understanding of "don't modify literals."
2016-06-08T13:45:06Z DGASAU: Primitive example is copying a matrix.
2016-06-08T13:45:21Z flip214: DGASAU: (make-array (array-dimensions ORIG) :initial-contents ORIG) or something like that
2016-06-08T13:45:41Z DGASAU: Yeah, but this looks clumsy to me.
2016-06-08T13:46:06Z stassats: and it doesn't work too
2016-06-08T13:46:07Z DGASAU: (Yes, I know that I can invent my own set of utility functions...)
2016-06-08T13:47:46Z scymtym: there is ALEXANDRIA:COPY-ARRAY
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2016-06-08T13:48:44Z stassats: but you have a literal array, you don't need to copy it
2016-06-08T13:49:29Z DGASAU: ?
2016-06-08T13:53:17Z jackdaniel: DGASAU: if you use #A syntax, you're using literal, which is part of code not data
2016-06-08T13:53:26Z jackdaniel: you have to use (make-array …) function
2016-06-08T13:53:33Z jackdaniel: to create data
2016-06-08T13:56:52Z DGASAU: So, basically, I still need a wrapper around make-array that copies dimensions, element type and contents.
2016-06-08T13:57:03Z DGASAU: Otherwise it is going to be quite verbose.
2016-06-08T13:58:07Z stassats: make-array does not copy arrays
2016-06-08T13:58:12Z jackdaniel: why do you want to copy something?
2016-06-08T13:58:14Z stassats: flip214 misled you
2016-06-08T13:58:25Z jackdaniel: (make-array '(3 2))  is similar to #2A((0 0) (0 0) (0 0))
2016-06-08T13:58:44Z jackdaniel: but the resulting array may be modified
2016-06-08T13:58:47Z jackdaniel: conformingly
2016-06-08T13:59:04Z DGASAU: stassats: what does :initial-contents do then?
2016-06-08T13:59:17Z stassats: clhs make-array
2016-06-08T13:59:17Z specbot: http://www.lispworks.com/reference/HyperSpec/Body/f_mk_ar.htm
2016-06-08T13:59:35Z jackdaniel: (make-array '(3 2) :initial-contents '((1 2) (3 4) (5 6)))
2016-06-08T13:59:43Z jackdaniel: is the same as #2A((1 2) (3 4) (5 6))
2016-06-08T13:59:51Z jackdaniel: except you may modify the array :)
2016-06-08T14:00:03Z DGASAU: I understand the latter.
2016-06-08T14:00:16Z flip214: stassats: why/how did I misled?
2016-06-08T14:00:21Z DGASAU: It is quite verbose.
2016-06-08T14:00:30Z stassats: flip214: your make-array thing does not work
2016-06-08T14:01:24Z DGASAU: Ah, it needs sequence...
2016-06-08T14:01:27Z flip214: if this is about the missing ":element-type", that's what I meant with "or something like that"
2016-06-08T14:01:29Z DGASAU sighs.
2016-06-08T14:01:33Z flip214: ah, okay.
2016-06-08T14:01:39Z flip214: yeah, multi-dimensional again...
2016-06-08T14:01:50Z stassats: well, "array" implies multi-dimensional
2016-06-08T14:02:07Z stassats: there's no array copying routine in CL
2016-06-08T14:02:18Z stassats: but this snippet doesn't call for copying anyhow
2016-06-08T14:02:20Z flip214: DGASAU: then feed :initial-contents (make-array (reduce #'* (array-dimensions orig)) :displaced-to orig)
2016-06-08T14:02:37Z flip214: or much simpler, use alexandria as that already provides one
2016-06-08T14:02:38Z stassats: that's not going to work either
2016-06-08T14:02:44Z jackdaniel: alexandria provides copy-array, I use that when I need it
2016-06-08T14:03:08Z jackdaniel: but I don't see the reason to copy it in a first place, but I probably don't understand something
2016-06-08T14:03:12Z jackdaniel: g2g, good luck! :)
2016-06-08T14:04:45Z stassats: you can move into #lisp
2016-06-08T14:04:52Z DGASAU: jackdaniel: stassats claims that "I'm doing it all wrong". I'm trying to understand what he suggests in his "don't modify literals" framework.
2016-06-08T14:04:53Z stassats: this is not about sbcl anymore
2016-06-08T14:06:43Z jackdaniel: DGASAU: I don't know if you do anything wrong, but if you modify array created with #a syntax, then it's non-conforming (because it's considered part of the code segment) – so it may or may not work. If you plan to change the array contents you should use make-array instead
2016-06-08T14:07:12Z jackdaniel: (let ((arr (make-array …))) (process arr) (values arr (aref …)))
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