Re: [Chicken-users] Chicken C interface

[Felix]

From: Thomas Chust <address@hidden>
Subject: Re: [Chicken-users] Chicken C interface
Date: Thu, 06 Jun 2013 11:34:40 +0200

> On 2013-06-05 23:36, Felix wrote:
>> From: Dan Leslie <address@hidden>
>>> [...]
>>> Basically, use C_alloc to allocate the memory required to host both
>>> the List structure and the data it is to contain, then use the C_list
>>> macro to patch it all together.
>> 
>> Note that this code is not correct: C_alloc allocates on the C stack and the
>> data will be invalid once the function returns (Sorry). If this works, then
>> it is just coincidental!
>> [...]
> 
> Hello,
> 
> when I first saw that code I thought that this must be incorrect, too.
> Then I checked the CHICKEN documentation for foreign-safe-lambda and read:
> 
>   "This is similar to foreign-lambda, but also allows the called
>    function to call Scheme functions and allocate Scheme data-objects."
> 

The part about allocation is wrong, I'd say.


cheers,
felix