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Re: Commercial development

From: Neil Jerram
Subject: Re: Commercial development
Date: Wed, 20 Apr 2005 20:23:45 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050324 Debian/1.7.6-1

Neil Jerram wrote:
Scott G. Miller wrote:

But beyond that, try running on Guile. At least on 1.6.7 it
still has problems.  Maybe 1.8 will be better.

Yes, I see. But 1.8 will indeed be better; the current CVS only has problems with
- 1.1 - for which I have a candidate fix

Is this a good fix for r5rs_pitfall 1.1? The possible issue that I can see is performance, but I think it's unlikely that a letrec will have enough bindings, or with deep enough structure in the <inits>, for this to become significant.

RCS file: /cvsroot/guile/guile/guile-core/libguile/eval.c,v
retrieving revision 1.394
diff -u -r1.394 eval.c
--- eval.c      30 Mar 2005 18:43:49 -0000      1.394
+++ eval.c      20 Apr 2005 19:04:15 -0000
@@ -3570,7 +3570,7 @@
                 init_forms = SCM_CDR (init_forms);
             while (!scm_is_null (init_forms));
-            SCM_SETCDR (SCM_CAR (env), init_values);
+            SCM_SETCDR (SCM_CAR (env), scm_copy_tree (init_values));
           x = SCM_CDR (x);


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