cl-prevalence-devel

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November 2004

2 participants
2 discussions

[cl-prevalence-devel] Re: cl-prevalence bug and patch
by Sven Van Caekenberghe 08 Dec '04

08 Dec '04

James, Thanks for the feedback. Here is a first reaction, without looking at your code. On 27 Nov 2004, at 03:58, James Wright wrote: > The first bug is pretty minor: An attempt to serialize a > standard-object will fail if any of its slots are unbound. This is probably fixed in the CVS version (among other things) - have a look at the mailing list(s). > The second bug is somewhat mystifying. Attempting to serialize an > object that points to another object that points ... to another object > that points to nothing will fail with a stack overflow if the length > of the "chain" is any longer than about 1300. I'm using Lispworks > with a stack size of 64000. I never tried chains that long. But yes there might be a problem here: the serializer tracks every object it encounters, and is itself a recursive process. Although 1300 doesn't seem that large a number. I am using LW myself, and sometimes you have to expand the stack a couple of times for very recursive code to succeed. I will have a look at your example later on. Sven

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[cl-prevalence-devel] compile problem with sbcl
by Bruce Butterfield 18 Nov '04

18 Nov '04

From today's CVS snapshot of cl-prevalence in SBCL 0.8.16: * (require 'cl-prevalence) ; loading system definition from #P"/home/bab/.sbcl/systems/s-xml.asd" into ; #<PACKAGE "ASDF3835"> ; registering #<SYSTEM :S-XML {93D1AB1}> as S-XML debugger invoked on a SB-INT:COMPILED-PROGRAM-ERROR in thread 14043: Execution of a form compiled with errors. Form: (DEFGENERIC FIND-OBJECT-WITH-SLOT (SYSTEM CLASS SLOT VALUE &OPTIONAL (TEST #'EQUALP)) (DOCUMENTATION Find and return the object in system of class with slot equal to value, null if not found)) Compile-time-error: (during macroexpansion of (DEFGENERIC FIND-OBJECT-WITH-SLOT ...)) invalid (TEST #'EQUALP) in the generic function lambda list (SYSTEM CLASS SLOT VALUE &OPTIONAL (TEST #'EQUALP)) See also: The ANSI Standard, Section 3.4.2

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