GNU bug report logs - #11198
serializing structs (prefabs)

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From: Klaus Stehle <klaus.stehle <at> uni-tuebingen.de>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 11198 <at> debbugs.gnu.org, Klaus Stehle <klaus.stehle <at> uni-tuebingen.de>
Subject: bug#11198: problems reading data with a "read-hash-extend" registered reader
Date: Wed, 11 Apr 2012 21:07:43 +0200 (CEST)

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

On Mon, 9 Apr 2012, Ludovic Courtès wrote:

> Date: Mon, 09 Apr 2012 23:10:14 +0200
> From: Ludovic Courtès <ludo <at> gnu.org>
> To: Klaus Stehle <klaus.stehle <at> uni-tuebingen.de>
> Cc: 11198 <at> debbugs.gnu.org
> Subject: Re: bug#11198: problems reading data with a "read-hash-extend"
>     registered reader
> 
> Hi Klaus,
> 
> Klaus Stehle <klaus.stehle <at> uni-tuebingen.de> skribis:
> 
> > (read-hash-extend #\R read-R)
> 
> Unlike previous versions, Guile 2.0 has distinct compilation and
> run-time phases.  Here you probably want the reader extension to become
> effective at compile-time (when compiling), and at evaluation-time (when
> interpreting the code):
> 
>   (eval-when (compile eval)
>     (read-hash-extend #\R read-R))
> 
> There’s an example of this in the manual, in the context of
> ‘current-reader’ (info "(guile) Loading").
> 
> Does it work for you?
> 
> Thanks,
> Ludo’.
> 

Hallo Ludo’,

No it doesn't work. The same behavour: the script runs with a compiler 
error message but nevertheless the record is created and displayed
correctly.
The only way to run the script without error message is to run it with
the --no-auto-compile option.


Thanks,
Klaus

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