[Gcl-devel] Re: interrupts in 64-bit GCL

[Camm Maguire]

Thanks!  Please let me know if you run into troubles here.

Take care,

Matt Kaufmann <address@hidden> writes:

> Howdy --
>
> Thanks for the reply.
>
> If address@hidden is willing to do (1), or to send me the exact configure
> and make commands and source directory used so that I can do it
> myself, then I'll try to reproduce the error by building ACL2 on top
> of it.  I'm assuming that --enable-debug is given to the configure
> command, not to make.
>
> Then if if I can't reproduce the problem, I'll let you and address@hidden
> know and we can explore (2).  In that case, if address@hidden is willing to
> do it, great; then I'll try to reproduce the problem.  But if I'm to
> do the build, I'd need explicit instructions on how to "make sure -g
> is included in the gcc calls"; maybe I need to do some setq in Lisp?
> Also I didn't understand the comment about makedefs.  But I guess we
> can ignore (2) if (1) works.
>
> -- Matt
>    Cc: address@hidden, address@hidden
>    From: Camm Maguire <address@hidden>
>    Date: Fri, 20 Feb 2009 20:58:49 -0500
>    X-SpamAssassin-Status: No, hits=-2.6 required=5.0
>    X-UTCS-Spam-Status: No, hits=-282 required=165
>
>    Greetings!  I suspect a missing signal block around some code that
>    needs protecting.  I've reprodced under gdb, but there are no
>    debugging symbols in the image.  [ Question for list -- have computers
>    now become so fast that -g should be included by default in all gcl
>    images? It used to slow down the compiler, don't know about now.  It
>    does make the image quite a bit bigger. ]
>
>    Ideally, you or someone else at the site might be so kind as to
>    rebuild atop
>
>    1) a gcl build with --enable-debug.  If this does not reproduce, then
>    in addition
>    2) rebuild atop a standard gcl with the CFLAGS environment variable
>    set to -g before configure and make.  Please make sure -g is included
>    in the gcc calls.  Otherwise, makedefs can be modified after configure
>    and before make to include -g wherever one sees -O3 or -O
>
>    Would this be too much trouble?
>
>    Take care,
>
>    Matt Kaufmann <address@hidden> writes:
>
>    > Hi --
>    >
>    > The sysadmins here at UT CS have built GCL 2.6.8pre from CVS as you
>    > suggested.  It's working great on 32-bit linux, but I've run into an
>    > issue for 64-bit linux.
>    >
>    > You can re-create the issue on a UT CS 64-bit linux machine as
>    > follows.
>    >
>    > Start up ACL2 built on GCL, as follows:
>    >
>    > /projects/acl2/v3-4-linux/fast-linux-gcl-saved_acl2
>    >
>    > Then issue these commands:
>    >
>    >   ; Just to slow down the output from the next form:
>    >   (trace$ rewrite)
>    >
>    >   ; ACL2 disables the debugger by default; this restores it:
>    >   (set-debugger-enable t)
>    >
>    >   ; This goes pretty fast but you'll have time to interrupt it:
>    >   (thm (equal (append (append x x) x) (append x x x)))
>    >
>    >   [Now quickly interrupt with control-c, and then :q from the break.
>    >    If the form above completes, just try it again.  Eventually I think
>    >    you'll see a Lisp "fatal error" or even a "Segmentation fault".]
>    >
>    > By the way, I built /projects/acl2/v3-4-linux/fast-linux-gcl as
>    > follows, on lhug-0 (a 64-bit linux machine):
>    >
>    > rm -f TAGS ; mv make-fast-gcl.log make-fast-gcl.old.log ; (time nice 
> make PREFIX=fast-linux-gcl- LISP=my-fast-gcl) >& make-fast-gcl.log&
>    >
>    > where "my-fast-gcl" is a script containing:
>    >
>    > #!/bin/sh
>    > /lusr/opt/gcl-2.6.8pre/bin/gcl -eval "(defparameter 
> user::*fast-acl2-gcl-build* t)" $*
>    >
>    > Also by the way, if you instead run the following on a 32-bit UT CS
>    > linux machine
>    >
>    > /projects/acl2/v3-4-linux/gcl-saved_acl2
>    >
>    > then you won't see the interrupt problem described above (or at least,
>    > I didn't, and I tried).
>    >
>    > Thanks --
>    > -- Matt
>    >
>    >
>    >
>    >
>
>    -- 
>    Camm Maguire                                           address@hidden
>    ==========================================================================
>    "The earth is but one country, and mankind its citizens."  --  Baha'u'llah
>
>
>
>

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