Greetings! [ BTW back from 1 month out of office ]
This has been fixed in cvs head, but this has a few other issues I'd
like to remedy before recommending it. I can backport the fix into
2.6.8pre I think if it is important to you.
GCL has never been able to read gensyms in via compile-file called
from compile. In cvs head we now intern these in a temporary package
held in compiler::*tmp-pack* and delete the package after compile.
There is some gc support to reset the home package to nil for retained
symbols, but this might be done in a better way.
>(defparameter my-def '(defun foo () (+ 1 xxx)))
MY-DEF
>(defparameter my-sym (gensym))
MY-SYM
>my-sym
#:G1680
>(defparameter my-def2 (subst my-sym 'xxx my-def))
MY-DEF2
>(proclaim (list 'special my-sym))
NIL
>(set my-sym 3)
3
>(eval my-def2)
FOO
>(symbol-function 'foo)
#<interpreted-function (LAMBDA-BLOCK FOO () (+ 1 #:G1680))>
>(trace compiler::wrap-literals)
(COMPILER::WRAP-LITERALS)
>(compile 'foo)
1> (COMPILER::WRAP-LITERALS (LAMBDA () (BLOCK FOO (+ 1 #:G1680))))
2> (COMPILER::WRAP-LITERALS LAMBDA)
<2 (COMPILER::WRAP-LITERALS LAMBDA)
2> (COMPILER::WRAP-LITERALS (NIL (BLOCK FOO (+ 1 #:G1680))))
3> (COMPILER::WRAP-LITERALS NIL)
<3 (COMPILER::WRAP-LITERALS NIL)
3> (COMPILER::WRAP-LITERALS ((BLOCK FOO (+ 1 #:G1680))))
4> (COMPILER::WRAP-LITERALS (BLOCK FOO (+ 1 #:G1680)))
5> (COMPILER::WRAP-LITERALS BLOCK)
<5 (COMPILER::WRAP-LITERALS BLOCK)
5> (COMPILER::WRAP-LITERALS (FOO (+ 1 #:G1680)))
6> (COMPILER::WRAP-LITERALS FOO)
<6 (COMPILER::WRAP-LITERALS FOO)
6> (COMPILER::WRAP-LITERALS ((+ 1 #:G1680)))
7> (COMPILER::WRAP-LITERALS (+ 1 #:G1680))
8> (COMPILER::WRAP-LITERALS +)
<8 (COMPILER::WRAP-LITERALS +)
8> (COMPILER::WRAP-LITERALS (1 #:G1680))
9> (COMPILER::WRAP-LITERALS 1)
<9 (COMPILER::WRAP-LITERALS 1)
9> (COMPILER::WRAP-LITERALS (#:G1680))
10> (COMPILER::WRAP-LITERALS #:G1680)
<10 (COMPILER::WRAP-LITERALS G1682::G1680)
10> (COMPILER::WRAP-LITERALS NIL)
<10 (COMPILER::WRAP-LITERALS NIL)
<9 (COMPILER::WRAP-LITERALS (G1682::G1680))
<8 (COMPILER::WRAP-LITERALS (1 G1682::G1680))
<7 (COMPILER::WRAP-LITERALS (+ 1 G1682::G1680))
7> (COMPILER::WRAP-LITERALS NIL)
<7 (COMPILER::WRAP-LITERALS NIL)
<6 (COMPILER::WRAP-LITERALS ((+ 1 G1682::G1680)))
<5 (COMPILER::WRAP-LITERALS (FOO (+ 1 G1682::G1680)))
<4 (COMPILER::WRAP-LITERALS (BLOCK FOO (+ 1 G1682::G1680)))
4> (COMPILER::WRAP-LITERALS NIL)
<4 (COMPILER::WRAP-LITERALS NIL)
<3 (COMPILER::WRAP-LITERALS ((BLOCK FOO (+ 1 G1682::G1680))))
<2 (COMPILER::WRAP-LITERALS (NIL (BLOCK FOO (+ 1 G1682::G1680))))
<1 (COMPILER::WRAP-LITERALS
(LAMBDA () (BLOCK FOO (+ 1 G1682::G1680))))
;; Compiling /tmp/gazonk_31440_0.lsp.
;; End of Pass 1.
;; End of Pass 2.
;; OPTIMIZE levels: Safety=0 (No runtime error checking), Space=0, Speed=3,
(Debug quality ignored)
;; Finished compiling /tmp/gazonk_31440_0.o.
;; Loading /tmp/gazonk_31440_0.o
;; start address -T 0xed3350 ;; Finished loading /tmp/gazonk_31440_0.o
#<compiled-function FOO>
NIL
NIL
>(foo)
4
Take care,
Matt Kaufmann <[EMAIL PROTECTED]> writes:
> Hi, Camm --
>
> The following sequence causes a warning and error, as shown below, in
> GCL versions 2.6.6 CLtL1, 2.6.7 CLtL1, and (a rather old) 2.7.0 ANSI.
> The problems go away in all of these if we replace gensym by gentemp.
>
> (defparameter my-def '(defun foo () (+ 1 xxx)))
> (defparameter my-sym (gensym))
> (defparameter my-def2 (subst my-sym 'xxx my-def))
> (proclaim (list 'special my-sym))
> (set my-sym 3)
> (eval my-def2)
> (compile 'foo)
> (foo)
>
> Here are the warning and error mentioned above.
>
> [After the compile:]
>
> ;; Warning: ;; The variable #:G2047 is undefined.
> ;; The compiler will assume this variable is a global.
>
> [After the call of foo, 2.6.6 and 2.6.7:]
>
> Error: Caught fatal error [memory may be damaged]
> Fast links are on: do (si::use-fast-links nil) for debugging
> Error signalled by EVAL.
> Broken at FOO. Type :H for Help.
> >>
>
> [After the call of foo, 2.7.0:]
>
> Error in EVAL [or a callee]: Control stack overflow.
>
> -- Matt
>
>
>
--
Camm Maguire [EMAIL PROTECTED]
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah
_______________________________________________
Gcl-devel mailing list
Gcl-devel@gnu.org
http://lists.gnu.org/mailman/listinfo/gcl-devel
