Hello,
I encountered some trouble using ecl that I don't know how to resolve
myself and I'd be very grateful to get some advice on what to do or
pointers to background-information that I was unable to find :
1. I just tried to get all conditions that ecl is aware of by traversing
all packages and all symbols calling
(subtypep _symbol 'condition) on any symbol in any package. I got my
list finally by excluding the
following symbols: (mod si:property-list si::proper-list). It seems
that
- (subtypep 'mod 'condition) raises "Wrong number of arguments ..."
error-condition
- (subtypep 'si:property-list 'condition) and (subtypep
'si::proper-list 'condition) raise "Stack overflow."
serious-condition
Question: Is this some issue I need to report here:
http://sourceforge.net/p/ecls/bugs/ ? Or is it normal
behaviour ?
2. Further I observed that I was only able to catch the stack-overflow
condition using a handler-case for
exactly three times :
ECL (Embeddable Common-Lisp) 13.5.1 (git:UNKNOWN)
Copyright (C) 1984 Taiichi Yuasa and Masami Hagiya
Copyright (C) 1993 Giuseppe Attardi
Copyright (C) 2000 Juan J. Garcia-Ripoll
ECL is free software, and you are welcome to redistribute it
under certain conditions; see file 'Copyright' for details.
Type :h for Help.
Top level in: #<process TOP-LEVEL>.
> (handler-case (subtypep 'si:property-list 'condition)
(ext:stack-overflow (e) (print "Caught it.")))
"Caught it."
"Caught it."
> (handler-case (subtypep 'si:property-list 'condition)
(ext:stack-overflow (e) (print "Caught it.")))
"Caught it."
"Caught it."
> (handler-case (subtypep 'si:property-list 'condition)
(ext:stack-overflow (e) (print "Caught it.")))
;;;
;;; Stack overflow.
;;; Jumping to the outermost toplevel prompt
;;;
Top level in: #<process TOP-LEVEL>.
Any attempt to catch it later failed and i ended up on toplevel ...
this seems odd to me but it matches
in a strange way the fact that you may, if a stack-overflow occurs,
resize the stack two times, after that
you're put to toplevel automatically. Is there any way to get around
this?
Thanks for any comment
ecky
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