GNU bug report logs - #21013
Evaluation expression from C assumes that lambda is present

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Stefan Israelsson Tampe <stefan.itampe <at> gmail.com>
To: bug-guile <at> gnu.org
Subject: Evaluation expression from C assumes that lambda is present
Date: Wed, 8 Jul 2015 20:48:38 +0200

[Message part 1 (text/plain, inline)]

When using the profiler in a pure module ,profile does not work

The reason is that in
    scmsigs.c,

At an evaluation occurs from C e.g.

static SCM
close_1 (SCM proc, SCM arg)
{
  return scm_primitive_eval_x (scm_list_3 (scm_sym_lambda, SCM_EOL,
   scm_list_2 (proc, arg)));
}

This means that languages in guile that want's profiling needs to export
lambda from (guile). Maybe this is a feature but there are two things that
can improve,

1. We can export @@ or @ as the only symbol from guile and fix all
evaluatoins like the above to issue a (@ (guile) lambda) in stead of lambda
etc. Maybe we should use a more uncommon symbol for @ and @@ to be used in
situations like that for which should always be reexported for langages
that want to support guile features.

lambda is a very common symbol and I would expect profiling to fail under
elisp no so this issues seams to be urgent. I will for know export lambda.

Regards
Stefan

[Message part 2 (text/html, inline)]

Message #10 received at 21013-done <at> debbugs.gnu.org (full text, mbox):

From: Andy Wingo <wingo <at> pobox.com>
To: Stefan Israelsson Tampe <stefan.itampe <at> gmail.com>
Cc: 21013-done <at> debbugs.gnu.org
Subject: Re: bug#21013: Evaluation expression from C assumes that lambda is
 present
Date: Fri, 24 Jun 2016 09:53:51 +0200

On Wed 08 Jul 2015 20:48, Stefan Israelsson Tampe <stefan.itampe <at> gmail.com> writes:

> When using the profiler in a pure module ,profile does not work
>
> The reason is that in 
> scmsigs.c, 
>
> At an evaluation occurs from C e.g.
>
> static SCM
> close_1 (SCM proc, SCM arg)
> {
> return scm_primitive_eval_x (scm_list_3 (scm_sym_lambda, SCM_EOL,
> scm_list_2 (proc, arg)));
> }

Amusing!  I tried to work around this use of `eval' but I can't because
there's too much C sclerosis.  Instead I switched to use scm_eval and
specified a module; should fix the issue.

Andy

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