[Gcl-devel] Re: 2.7.0 compiler bug ?

[Camm Maguire]

Greetings!  And thanks as always for the vital feedback!

I can't reproduce this, at least not now.  Is this still an issue?

Take care,


Robert Boyer <address@hidden> writes:

> The following transcript may illustrate a GCL compiler bug that did not exist
> back in 2.6.7.
> 
> If you remove the proclaim, the bug goes away!  That is, this bug has
> something to do with ((safety 3) (speed 0)).
> 
> Bob
> 
> -------------------------------------------------------------------------------
> 
> GCL (GNU Common Lisp)  2.7.0 ANSI    Dec 21 2005 12:59:20
> Source License: LGPL(gcl,gmp,pargcl), GPL(unexec,bfd)
> Binary License:  GPL due to GPL'ed components: (BFD UNEXEC)
> Modifications of this banner must retain notice of a compatible license
> Dedicated to the memory of W. Schelter
> 
> Use (help) to get some basic information on how to use GCL.
> 
> >(proclaim '(optimize (safety 3) (speed 0)))
> 
> (defun eee ()
>   (let ((length 2)
>         (num 1))
>     (declare (fixnum num))
>     (do ((i (1- length) (1- i))) ((< i 0))
>         (declare (fixnum i))
>         (setq num (the fixnum (1+ num))))))
> 
> 
> 
> NIL
> 
> >
> EEE
> 
> >(compile 'eee)
> 
> ;; Compiling /tmp/gazonk_16289_0.lsp.
> ;; End of Pass 1.  
> ;; End of Pass 2.  
> ;; OPTIMIZE levels: Safety=3, Space=0, Speed=0, (Debug quality ignored)
> ;; Finished compiling /tmp/gazonk_16289_0.o.
> Loading /tmp/gazonk_16289_0.o
> start address -T 0xa09a868 Finished loading /tmp/gazonk_16289_0.o
> #<compiled-function EEE>
> NIL
> NIL
> 
> >(eee)
> Segmentation violation: c stack ok:signalling error
> Error in EVAL [or a callee]: Caught fatal error [memory may be damaged]: 
> Segmentation violation.
> 
> Fast links are on: do (si::use-fast-links nil) for debugging
> Broken at CONDITIONS::CLCS-UNIVERSAL-ERROR-HANDLER.  Type :H for Help.
>  1 (Continue) Return to top level.
> dbl:>>:q
> 
> Top level.
> >
> 
> 
> 

-- 
Camm Maguire                                            address@hidden
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"The earth is but one country, and mankind its citizens."  --  Baha'u'llah