[En-Nut-Discussion] Re: [btnode-development] Warnings when compiling NutOS unix emulation with gcc 4.0.1

[Matthias Ringwald]

hi ole.

thanks for taking a look at the signedness /gcc 4.0 issue.
actually, there has been another volunteer which did send a patch to  
correct all those.

http://www.egnite.de/pipermail/en-nut-discussion/2005-March/004106.html

I did have a quick look but I'm not confident if the patch is good.
E.g. it changes the THREADINFO td_name from u_char to char.
I think its better the other way round, in functions calls that use  
td_name
cast to (char).

matthias



On 12.07.2005, at 13:56, Ole Reinhardt wrote:

> Hi all,
>
> I get a lot of warnings when compiling the unix emulation with gcc
> version 4.0.1. Those would also appear when compiling with avr-gcc 4.x
>
> These warnings are like the following:
>
> bt_hci_transport_uart.c:161: warning: pointer targets in passing
> argument 1 of 'NUT_fopen' differ in signedness
>
> They always appear if we pass a u_char argument to a function  
> expecting
> a char argument.
>
> I would likt to propose to change all variables that hold text
> characters to char.
>
> What's your opinion to solve this problem? (beside of using gcc 3.3.6)
>
> Regards,
>
> Ole Reinhardt
>
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